What This Transom Flange is Used For

TFLANGE-2W provides a finished transition point for a compatible 2" outboard rigging tube where the engine's wiring, hoses and cables are routed through the transom area.

Instead of leaving the rigging tube loose at the transom opening, the flange helps create a cleaner and more organized installation.

A typical outboard rigging bundle may include:

• Engine wiring harnesses
• Battery cables
• Throttle and shift cables
• Hydraulic steering hoses
• Gauge and network wiring
• Trim wiring
• Accessory wiring
• Other compatible engine rigging

Best Match: 2" White Rigging Tube

2" White Outboard Rigging Tube - RIGTUBE-W

The natural companion to the TFLANGE-2W is Pro Marine's 2" white rigging tube.

Together, the white tube and white flange provide a coordinated rigging solution for boats where white better matches the hull, transom or engine installation.

View 2" White Rigging Tube

Prefer Black Rigging Hardware?

The same basic rigging setup is also available in black. Choose the color that best matches the boat, engine and existing transom rigging.

2" Black Transom Flange - TFLANGE-2

Black version of the 2" Pro Marine transom rigging flange for installations using black rigging hardware.

View Black Transom Flange

2" Black Rigging Tube - RIGTUBE-B

Traditional black 2" outboard rigging tube for routing and protecting engine wiring, cables and hoses.

View 2" Black Rigging Tube

2" Rigging Tube and Flange Options

Other 2" Rigging Hardware

2" T-Flange with Fuel Port - TFLANGE-FP

Alternative transom flange with a separate port for routing the fuel hose outside the main 2" rigging bundle.

View T-Flange with Fuel Port

2" Rigging Hose Union - TUNION

Connects two compatible sections of 2" rigging tube when extending or repairing an existing rigging-tube installation.

View 2" Rigging Hose Union

Standard Flange or Fuel-Port Flange?

The correct transom flange depends on how the boat's engine rigging is routed.

Installation Tips

• Verify that the rigging tube and flange are compatible 2" components.
• Plan the transom opening and rigging route before installation.
• Keep the engine rigging bundle free from sharp bends and pinch points.
• Leave enough slack for full steering movement.
• Check the engine through its full trim and tilt range after installation.
• Avoid tightly compressing wiring, control cables or hydraulic hoses.
• Inspect all hoses and wiring before enclosing them inside the rigging tube.
• Secure and seal the flange to the transom using installation methods appropriate for the boat.

Key Features and Benefits

• 2" transom rigging flange
• White finish
• Designed for compatible 2" marine rigging tube
• Creates a clean rigging-tube transition at the transom
• Helps organize outboard wiring, cables and hoses
• Natural match for Pro Marine 2" white rigging tube
• Black flange option also available
• Fuel-port flange option available
• 2" rigging hose union available for extensions and repairs

FAQ

What size rigging tube is TFLANGE-2W designed for?
TFLANGE-2W is a 2" transom rigging flange.

What color is TFLANGE-2W?
This version is white.

Which rigging tube should I use with the white flange?
For a matching white installation, pair it with RIGTUBE-W 2" White Rigging Tube .

Do you have this flange in black?
Yes. Pro Marine also stocks the TFLANGE-2 2" Black Transom Flange .

What if I want the fuel hose separated from the main rigging tube?
See the TFLANGE-FP 2" T-Flange with Fuel Port , which provides a separate fuel-hose routing point.

Can two sections of 2" rigging tube be connected together?
Pro Marine stocks the TUNION 2" Rigging Hose Union for joining compatible sections of 2" rigging tube.

Searchable Terms

TFLANGE-2W, white transom flange, 2 inch transom flange, white rigging tube flange, outboard rigging flange, marine transom flange, 2 inch rigging tube, RIGTUBE-W, TFLANGE-2, RIGTUBE-B, TFLANGE-FP, TUNION, outboard rigging tube hardware, white outboard rigging

What This Transom Flange is Used For

TFLANGE-2 is used where a 2" outboard rigging tube transitions through the boat or transom rigging area.

Instead of allowing the rigging hose to simply pass through an unfinished opening, the flange provides a defined connection point for the tube.

Depending on the engine installation, the rigging tube may organize:

• Engine wiring harnesses
• Battery cables
• Throttle and shift cables
• Fuel hose
• Hydraulic steering hoses
• Gauge and network wiring
• Trim and accessory wiring
• Other outboard engine hoses and cables

Why Use a Rigging Tube Flange?

The transom entry point is one of the most visible parts of an outboard rigging installation. A flange helps create a cleaner and more organized transition between the rigging tube and the boat.

Benefits include:

• Creates a cleaner finished transom appearance
• Provides a defined entry point for 2" rigging tube
• Helps organize the engine rigging bundle
• Reduces direct contact between the tube and an unfinished opening
• Makes future rigging inspection and service easier

2" Black and White Rigging Tube

2" Black Rigging Tube - RIGTUBE-B

Black 2" marine rigging tube sold by the foot for organizing and protecting outboard engine wiring, hoses and cables.

View Black 2" Rigging Tube

2" White Rigging Tube - RIGTUBE-W

White 2" rigging tube for boats where a lighter color better matches the hull, transom or engine installation.

View White 2" Rigging Tube

Need a Separate Fuel Hose Port?

2" T-Flange with Fuel Port - TFLANGE-FP

If the installation benefits from routing the fuel hose separately, Pro Marine also stocks a TH Marine 2" T-flange with a dedicated fuel port.

This can reduce crowding inside the main rigging tube and gives the installer another routing option for the fuel line.

View T-Flange with Fuel Port

2" Rigging Hose Union

2" Rigging Hose Union - TUNION

The universal 2" rigging hose union joins two compatible sections of 2" rigging tube.

Useful when extending an existing rigging run or repairing a rigging system without replacing the entire length of hose.

View 2" Rigging Hose Union

Split Conduit Rigging Options

If the engine is already rigged and you do not want to disconnect every cable and hose, split conduit can be wrapped around an existing bundle.

1.5" Split Conduit - SPLITTUBING-15

Smaller split conduit for wrapping and protecting existing outboard wiring and hose bundles.

View 1.5" Split Conduit

2" Split Conduit - SPLITTUBING-2

2" black split conduit for larger installed rigging bundles where a wraparound tube is easier to install than closed rigging hose.

View 2" Split Conduit

Wrappable Split Braided Rigging Tube

1.5" Wrappable Split Braided Tube - F6N150

Flexible wraparound braided protection for smaller existing engine wiring, hose and cable bundles.

View 1.5" Braided Tube

2" Wrappable Split Braided Tube - F6N200

Larger 2" wraparound braided option for protecting an existing rigging bundle without fully disconnecting the engine.

View 2" Braided Tube

Standard Flange vs. Fuel Port Flange

Installation Tips

• Verify the rigging tube is 2" before selecting the flange.
• Plan the rigging path before drilling or modifying the transom area.
• Leave sufficient slack for full engine steering movement.
• Make sure trim and tilt movement does not pull against the flange.
• Avoid sharp bends in steering hoses, fuel hose and control cables.
• Keep wiring away from sharp edges at the transom opening.
• Support the rigging bundle so excessive weight is not placed on the flange.
• Install and seal the flange according to the requirements of the boat and installation.

Key Features and Benefits

• 2" inside-diameter rigging connection
• Black transom flange
• MPI Products brand
• Designed for compatible outboard rigging installations
• Provides a finished transom entry for rigging tube
• Black and white 2" rigging tube available
• Fuel-port flange alternative available
• 2" rigging hose union available
• Split conduit and braided wrap alternatives available

FAQ

What size rigging tube fits TFLANGE-2?
TFLANGE-2 is designed for a 2" rigging tube connection.

What color is TFLANGE-2?
Pro Marine lists TFLANGE-2 as a black transom flange.

Who manufactures TFLANGE-2?
TFLANGE-2 is manufactured by MPI Products.

What is a rigging tube flange used for?
It provides a clean connection point where outboard rigging tube enters the boat or transom rigging area.

Do you stock 2" rigging tube?
Yes. Pro Marine stocks 2" black rigging tube and 2" white rigging tube .

Do you carry a flange with a separate fuel port?
Yes. Pro Marine stocks the TFLANGE-FP 2" T-Flange with Fuel Port .

Can two pieces of 2" rigging tube be connected?
Yes. The TUNION 2" Rigging Hose Union is available for compatible installations.

What if the engine is already fully rigged?
Split conduit and wrappable braided tubing can be installed around an existing rigging bundle without feeding every hose and cable through a closed tube.

Searchable Terms

TFLANGE-2, 2 inch transom flange, 2 inch rigging flange, outboard rigging flange, black transom flange, MPI transom flange, marine rigging tube flange, outboard cable flange, rigging hose flange, RIGTUBE-B, RIGTUBE-W, TFLANGE-FP, TUNION, SPLITTUBING-15, SPLITTUBING-2, F6N150, F6N200

How to Order Bulk Fuel Hose

This fuel hose is sold by the foot. Enter the quantity based on the continuous hose length required for your installation.

For example, if your fuel-line run requires 6 feet of hose, order a quantity of 6.

Type B Marine Fuel Hose

Marine fuel hose classifications identify how the hose is intended to be used within a boat's fuel system.

Type B fuel hose is commonly used for exposed or above-deck applications where that hose classification is appropriate. It does not carry the same additional fire-test classification as Type A marine fuel hose.

If your fuel line passes through an enclosed area or the installation specifically requires Type A hose, use the Type A option linked below.

Complete Your 1/4" Fuel Line Setup

Build a complete 1/4" outboard fuel-line setup with the matching clamp, primer bulb and installation tools shown below.

Oetiker 4-133 Ear Clamp - 10 Pack

Matching Oetiker ear clamp for the MPI 315-014 1/4" Type B fuel hose.

Clamp Size: 4-133

View Oetiker 4-133 Clamp

Pro Marine 8002 - 1/4" Primer Bulb

Matching 1/4" primer bulb for building or repairing marine outboard fuel-line assemblies using 1/4" hose.

Hose Size: 1/4"

View 1/4" Primer Bulb

Oetiker Standard Jaw Pincer Tool

Installation tool for properly closing Oetiker ear clamps on marine fuel-line connections.

View Oetiker Pincer Tool

Oetiker Clamp Pack with Tool

Complete assortment of common Oetiker clamp sizes with the installation tool included. A convenient option for technicians and marine shops servicing multiple hose sizes.

View Oetiker Clamp Pack

1/4" Type A Alternative

MPI 1/4" Type A Marine Fuel Hose - 314-1

Use the Type A version when the installation requires the additional Type A fire-resistant marine fuel-hose classification.

Inside Diameter: 1/4"
Fuel Hose Type: Type A
Matching Clamp: Oetiker 4-170

View 1/4" Type A Fuel Hose

1/4" Fuel Hose Comparison

Why Do Two 1/4" Hoses Use Different Clamps?

The 1/4" measurement refers to the hose's inside diameter. It does not determine the outside diameter of the hose.

Type A and Type B hose use different constructions and wall thicknesses, so their outside diameters can be different even when both have a 1/4" inside diameter.

That is why the MPI 315-014 Type B hose uses Oetiker 4-133, while the MPI 314-1 Type A hose uses Oetiker 4-170.

What This Fuel Hose is Used For

MPI 315-014 1/4" Type B fuel hose can be used for building, replacing or repairing marine fuel lines where 1/4" hose and a Type B classification are appropriate.

Because this hose is sold in bulk by the foot, it can be paired with the correct primer bulb, fittings and clamps to create a custom-length fuel-line assembly.

Building a 1/4" Outboard Fuel Line

A typical 1/4" outboard fuel-line assembly may require:

• MPI 315-014 1/4" Type B marine fuel hose
• Pro Marine 8002 1/4" primer bulb
• Correct tank-side fitting or connection
• Correct engine-side fitting or connector
• Oetiker 4-133 ear clamps
• Oetiker pincer installation tool

The exact components required depend on the engine, fuel tank and overall fuel-system layout.

Primer Bulb Selection

Primer bulb fittings should match the inside diameter of the fuel hose. For this 1/4" hose, use the Pro Marine 8002 1/4" Primer Bulb.

View Pro Marine 8002 1/4" Primer Bulb

Key Features & Benefits

• 1/4" inside diameter
• MPI Products marine fuel hose
• Type B marine fuel-hose construction
• Commonly used in exposed and above-deck applications where Type B hose is permitted
• Sold by the foot for custom-length installations
• Matching Oetiker 4-133 clamp available
• Matching Pro Marine 8002 1/4" primer bulb available
• Type A 1/4" alternative available
• Oetiker installation tool available
• Complete Oetiker clamp assortment with tool available

Need Help Choosing the Right Marine Fuel Hose?

Choosing the correct marine fuel line depends on hose diameter, installation location, fuel-hose classification, fittings, primer bulb size and clamp size.

Visit the Pro Marine Fuel Line Technical Center

FAQ

What size is MPI 315-014?
It has a 1/4" inside diameter.

Is this hose sold by the foot?
Yes. Order the quantity corresponding to the total number of feet required.

What type of marine fuel hose is this?
This is MPI Type B marine fuel hose.

Where is Type B fuel hose commonly used?
Type B hose is commonly used for exposed and above-deck fuel-line applications where that classification is permitted.

Which clamp fits MPI 315-014?
Use the Oetiker 4-133 ear clamp .

Which primer bulb fits this 1/4" hose?
Use the Pro Marine 8002 1/4" Primer Bulb .

Can I use the same primer bulb with the 1/4" Type A hose?
Yes. Both the 1/4" Type A and Type B hoses use a 1/4" inside diameter, so the Pro Marine 8002 1/4" primer bulb is the matching hose size.

What if I need Type A 1/4" fuel hose?
Use the MPI 314-1 1/4" Type A fuel hose .

Which clamp fits the 1/4" Type A hose?
The Type A MPI 314-1 hose uses the Oetiker 4-170 ear clamp .

Why do the Type A and Type B 1/4" hoses use different clamps?
The 1/4" measurement is the inside diameter. Different hose construction changes the outside diameter, so the clamp must be matched to the specific hose.

Searchable Part Numbers & Terms

315-014, MPI 315-014, 1/4 fuel hose, 1/4 marine fuel hose, 1/4 boat fuel line, 1/4 outboard fuel hose, Type B marine fuel hose, Type B fuel line, marine fuel line by the foot, bulk marine fuel hose, above deck fuel hose, MPI fuel line, Oetiker 4-133, 4-133 fuel hose clamp, 8002, Pro Marine 8002, 1/4 primer bulb, marine primer bulb, outboard primer bulb, 314-1, 1/4 Type A fuel hose, Oetiker 4-170, marine fuel hose, outboard fuel line, boat fuel hose

What This Hose is Used For

BHOSE-118 is intended for marine plumbing systems using 1-1/8" hose connections.

Common applications include:

• Bilge pump discharge hose
• Higher-flow bilge plumbing
• Livewell plumbing
• Baitwell plumbing
• Drain hose
• Thru-hull discharge plumbing
• General marine water transfer lines

Always verify the pump outlet, thru-hull or fitting diameter before selecting hose.

Matching 1-1/8" Hose Clamp

German-Style Hose Clamp - 4-6

The recommended clamp for Pro Marine's 1-1/8" black and white heavy-duty marine hose.

Secure the hose at pump outlets, thru-hulls and other compatible plumbing connections using the correct clamp size.

View German-Style 4-6 Hose Clamp

1-1/8" Thru-Hull Fitting

1-1/8" Plastic Thru-Hull - 5-3055

Matching 1-1/8" thru-hull for compatible bilge discharge and marine plumbing applications.

Pair with BHOSE-118 and the German-style 4-6 clamp when the installation calls for a 1-1/8" hose connection.

View 1-1/8" Thru-Hull

Black and White Bilge / Livewell Hose Sizes

Pro Marine stocks heavy-duty marine hose in 3/4", 1" and 1-1/8" sizes in both black and white.

Prefer White 1-1/8" Hose?

1-1/8" Heavy-Duty White Marine Hose - WHOSE-118

Same 1-1/8" hose size in a white finish for installations where a lighter color is preferred.

Matching Clamp: German-Style 4-6

View White 1-1/8" Hose

Bilge Pump Options

Pro Marine stocks several bilge pump capacities for different boat sizes and pumping requirements.

Pro Marine 500 GPH Bilge Pump - BPM500

Compact bilge pump rated at 500 GPH for compatible smaller bilge installations.

View 500 GPH Pump

Pro Marine 1100 GPH Bilge Pump - BPM1100

1100 GPH bilge pump for compatible installations requiring greater pumping capacity.

View 1100 GPH Pump

Pro Marine 2000 GPH Bilge Pump - BPM2000

Higher-capacity 2000 GPH pump for compatible marine installations where increased water-removal capacity is required.

View 2000 GPH Pump

Add Automatic Bilge Pump Operation

Bilge Pump Float Switch - FLTSWITCH

Add a float switch to a compatible bilge pump system so the pump can activate automatically when water reaches the switch's activation level.

View Bilge Float Switch

Bilge Pump Wiring Supplies

Bilge pump wiring is exposed to a wet marine environment, so electrical connections should be properly secured and protected from moisture.

Blue Butt Connectors - BBC - 25 Pack

Electrical butt connectors for compatible bilge pump, float switch and other marine wiring installations.

View Blue Butt Connectors

1/4" Red Heat Shrink - 14R

Red heat-shrink tubing for protecting compatible electrical connections and identifying positive wiring.

View Red Heat Shrink

1/4" Black Heat Shrink - 14B

Black heat-shrink tubing for protecting compatible electrical connections in marine installations.

View Black Heat Shrink

Bilge and Livewell Hose Installation Tips

• Match hose ID to the pump, thru-hull or plumbing fitting.
• Use the correct clamp size for the hose.
• Avoid sharp bends that can restrict flow.
• Keep discharge runs as short and direct as practical.
• Support long hose runs to reduce sagging.
• Route hose where stored gear cannot crush or kink it.
• Inspect hose and fitting connections for leaks after installation.
• Protect electrical splices from moisture.

Why Hose Diameter Matters

The hose inside diameter should match the pump discharge or plumbing fitting. Installing a hose that is too small can restrict flow, while oversized hose may not seal correctly on the fitting.

For a bilge pump, using the correct discharge hose helps the system move water as efficiently as the installation allows.

Black vs. White Marine Hose

Pro Marine offers the heavy-duty bilge and livewell hose in both black and white. Choose the color that best fits the boat's layout and installation preference.

Both colors are available in 3/4", 1" and 1-1/8" inside diameters.

Key Features and Benefits

• 1-1/8" inside diameter
• Heavy-duty black marine hose
• Suitable for compatible bilge and livewell plumbing
• Useful for higher-flow marine water discharge applications
• Matching German-style 4-6 clamp available
• Matching 1-1/8" plastic thru-hull available
• White 1-1/8" hose alternative available
• 3/4" and 1" sizes also available
• Bilge pumps available in 500, 1100 and 2000 GPH options
• Float switch and marine wiring supplies available

FAQ

What size is BHOSE-118?
BHOSE-118 is 1-1/8" inside-diameter heavy-duty black marine hose.

Can this hose be used for a bilge pump?
Yes, when the pump discharge connection is designed for 1-1/8" hose.

Can this hose be used for a livewell?
Yes. It can be used in compatible livewell and baitwell plumbing systems requiring 1-1/8" hose.

Which clamp fits this hose?
Use the German-Style 4-6 Hose Clamp .

Do you carry a matching 1-1/8" thru-hull?
Yes. Pro Marine stocks the 5-3055 1-1/8" Plastic Thru-Hull .

Do you carry this hose in white?
Yes. The WHOSE-118 1-1/8" Heavy-Duty White Hose is also available.

Do you carry smaller hose sizes?
Yes. Pro Marine also stocks heavy-duty bilge and livewell hose in 3/4" and 1" sizes in both black and white.

Does a 2000 GPH pump automatically use 1-1/8" hose?
Not necessarily. Always verify the actual discharge outlet diameter on the pump before selecting hose.

Can I add automatic bilge operation?
A compatible float switch can be added to an appropriate bilge pump installation.

Searchable Terms

BHOSE-118, 1-1/8 bilge hose, 1-1/8 livewell hose, black bilge hose, black livewell hose, marine water hose, bilge pump discharge hose, baitwell hose, boat drain hose, 1-1/8 marine hose, WHOSE-118, 4-6 hose clamp, German style hose clamp, 5-3055, 1-1/8 thru hull, BPM500, BPM1100, BPM2000, FLTSWITCH, bilge pump hose, boat plumbing hose

What This Blower Hose is Used For

Item 420-3 is used in compatible 3" marine ventilation systems to route air between the blower, engine compartment and exterior ventilation openings.

Typical applications include:

• Bilge blower ducting
• Engine-compartment ventilation
• Powered exhaust ventilation systems
• Replacement of damaged or deteriorated 3" blower hose
• Marine air-intake and exhaust duct routing

Matching 3" Bilge Blower

Moeller 3" Bilge Blower - 5-3710

Matching 3" marine bilge blower for compatible engine-compartment ventilation systems. Pro Marine lists 5-3710 as a Moeller aftermarket blower. :contentReference[oaicite:0]{index=0}

Use 3" blower hose with a ventilation system designed around 3" ducting unless the boat manufacturer specifies otherwise.

View 3" Bilge Blower

Matching 3" Hose Clamp

German-Style Hose Clamp - 4-13

Matching clamp for securing 3" blower hose to compatible blower outlets and ventilation fittings.

A secure clamp helps keep the hose attached and prevents the duct from slipping off due to vibration or movement inside the boat.

View 4-13 Hose Clamp

3" and 4" Marine Blower System Guide

Need 4" Blower Hose Instead?

4" Heavy-Duty Vinyl Blower Hose - 420-4

Larger 4" marine ventilation hose for systems designed around a 4" bilge blower and ducting.

View 4" Blower Hose

4" Bilge Blower - 5-3715

Matching 4" blower option for marine ventilation systems requiring 4" ducting.

View 4" Bilge Blower

German-Style Hose Clamp - 4-17

Matching clamp for compatible 4" marine blower hose installations.

View 4-17 Hose Clamp

Why Bilge Ventilation Matters

Enclosed gasoline engine compartments can accumulate fuel vapors. A properly designed powered ventilation system helps exhaust those vapors from the compartment before engine startup.

Blower hose is an important part of that system because it directs airflow to and from the areas the ventilation system is intended to serve.

Damaged, disconnected, crushed or badly routed ducting can reduce the effectiveness of the ventilation system even if the blower itself is working.

Blower Hose Installation Tips

• Use hose that matches the blower and vent fitting diameter.
• Secure connections with the proper hose clamp.
• Keep hose runs as short and direct as practical.
• Avoid sharp bends, crushed sections and kinks.
• Support the hose so it does not sag into bilge water.
• Keep duct openings clear of stored gear and debris.
• Inspect old hose for cracking, tearing or collapsed sections.
• Verify airflow after replacing the blower or ducting.

When Should Blower Hose Be Replaced?

Inspect the ventilation ducting whenever the blower is serviced or the engine compartment is being worked on.

Replace blower hose if you find:

• Tears or holes
• Cracking or age-related deterioration
• Collapsed sections
• Severe kinks
• Loose connections
• Hose that will no longer stay attached to fittings
• Damage caused by stored equipment or engine-compartment heat

Marine Wiring Supplies

If you are replacing the blower and hose together, inspect the blower wiring at the same time.

Blue Butt Connectors - BBC - 25 Pack

Electrical butt connectors for compatible marine blower and wiring repairs.

View Blue Butt Connectors

1/4" Red Heat Shrink - 14R

Red heat-shrink tubing for protecting compatible electrical connections and identifying positive wiring.

View Red Heat Shrink

1/4" Black Heat Shrink - 14B

Black heat-shrink tubing for protecting compatible electrical connections in marine installations.

View Black Heat Shrink

Key Features and Benefits

• 3" diameter marine blower hose
• Heavy-duty vinyl construction
• Designed for compatible bilge ventilation systems
• Useful for engine-compartment intake and exhaust ducting
• Matching Moeller 3" bilge blower available
• Matching German-style 4-13 clamp available
• Complete 4" blower system also available
• Marine wiring supplies available for blower replacement projects

FAQ

What size is blower hose 420-3?
Item 420-3 is 3" marine blower hose.

What blower works with this hose?
Pro Marine stocks the Moeller 5-3710 3" Bilge Blower for compatible 3" ventilation systems.

Which clamp should I use?
Use the German-Style 4-13 Hose Clamp for this 3" blower hose.

Why is blower hose important?
The blower creates airflow, while the hose directs that airflow through the engine-compartment ventilation system. Damaged or collapsed ducting can reduce ventilation performance.

Can I use this hose on a 4" blower?
No. Use hose that matches the blower and ventilation fittings. For a 4" system, use item 420-4 4" blower hose .

Should blower hose have sharp bends?
Avoid sharp bends and kinks whenever possible because they can restrict airflow through the ventilation system.

Do you stock the complete 3" blower setup?
Yes. Pro Marine stocks the 3" blower, 420-3 blower hose and 4-13 clamp.

Do you carry blower wiring supplies?
Yes. Pro Marine stocks blue butt connectors, red heat shrink and black heat shrink.

Searchable Terms

420-3, 3 inch blower hose, 3 inch bilge blower hose, marine blower hose, boat ventilation hose, bilge ventilation duct, engine compartment ventilation hose, marine ventilation duct, heavy duty vinyl blower hose, 5-3710, 3 inch Moeller blower, 4-13 hose clamp, German style hose clamp, 420-4, 4 inch blower hose, boat blower duct

What This Blower Hose is Used For

Item 420-4 is used in compatible 4" marine ventilation systems to route intake and exhaust airflow through enclosed engine compartments.

Typical applications include:

• Bilge blower ducting
• Gasoline engine-compartment ventilation
• Powered exhaust ventilation systems
• Marine air-intake ducting
• Replacement of torn, crushed or deteriorated blower hose

Matching 4" Bilge Blower

4" Marine Bilge Blower - 5-3715

Matching 4" powered marine blower for compatible engine-compartment ventilation systems.

Pair the blower with 4" ducting when the boat's ventilation system is designed around a 4" hose diameter.

View 4" Bilge Blower

Matching 4" Hose Clamp

German-Style Hose Clamp - 4-17

Matching clamp for securing 4" blower hose to compatible blower outlets and marine ventilation fittings.

Proper clamping helps keep the hose connected despite engine vibration, boat movement and servicing inside the engine compartment.

View 4-17 Hose Clamp

3" and 4" Marine Blower System Guide

Need 3" Blower Hose Instead?

3" Heavy-Duty Vinyl Blower Hose - 420-3

Smaller 3" marine ventilation hose for systems designed around 3" blower ducting.

View 3" Blower Hose

3" Bilge Blower - 5-3710

Matching 3" marine blower for compatible ventilation systems using 3" ducting.

View 3" Bilge Blower

German-Style Hose Clamp - 4-13

Matching clamp for compatible 3" blower-hose installations.

View 4-13 Hose Clamp

Why Blower Hose Matters

The blower creates airflow, but the hose determines where that airflow is pulled from and where it is discharged.

If the ducting is torn, disconnected, crushed or badly kinked, the blower may continue running while the ventilation system is no longer moving air as intended.

For that reason, blower hose should be inspected whenever the blower, engine compartment or surrounding ventilation system is serviced.

Blower Hose Installation Tips

• Match hose diameter to the blower and ventilation fittings.
• Use the correct clamp at blower and vent connections.
• Keep ducting as short and direct as practical.
• Avoid severe bends that restrict airflow.
• Do not crush the flexible hose behind batteries or stored gear.
• Support long sections so they do not sag into bilge water.
• Keep hose openings clear of debris.
• Inspect the hose for tears and disconnected sections.
• Verify airflow after replacing any part of the ventilation system.

When Should 4" Blower Hose Be Replaced?

Replace marine ventilation hose when it no longer provides an open, securely connected path for airflow.

Common signs include:

• Torn or punctured hose
• Collapsed ducting
• Severe kinks
• Cracking or deterioration
• Loose blower or vent connections
• Hose damaged by engine-compartment heat
• Hose crushed by batteries, storage or other equipment

Marine Wiring Supplies

If blower hose replacement is part of a larger ventilation-system repair, inspect the blower wiring and connections at the same time.

Blue Butt Connectors - BBC - 25 Pack

Electrical butt connectors for compatible bilge blower and marine wiring repairs.

View Blue Butt Connectors

1/4" Red Heat Shrink - 14R

Red heat-shrink tubing for protecting compatible electrical connections and identifying positive wiring.

View Red Heat Shrink

1/4" Black Heat Shrink - 14B

Black heat-shrink tubing for protecting compatible marine electrical connections.

View Black Heat Shrink

Key Features and Benefits

• 4" diameter marine ventilation hose
• Heavy-duty vinyl construction
• For compatible bilge blower and engine-compartment ventilation systems
• Matching 4" bilge blower available
• Matching German-style 4-17 clamp available
• Complete 3" blower system also available
• Flexible construction for routing through marine engine compartments
• Marine wiring supplies available for complete blower-system service

FAQ

What size is item 420-4?
Item 420-4 is 4" heavy-duty vinyl marine blower hose.

What blower goes with this hose?
Pro Marine stocks the 5-3715 4" Bilge Blower for compatible 4" ventilation systems.

Which clamp should I use?
Use the German-Style 4-17 Hose Clamp .

Can I use 3" hose on a 4" blower?
Do not reduce the system simply because smaller hose is available. Match the ducting to the blower and the boat's original ventilation design.

Why is blower hose important?
Blower hose directs the airflow created by the ventilation blower. Torn, crushed or disconnected hose can reduce the effectiveness of the system.

Should the hose have sharp bends?
Avoid sharp bends and kinks whenever possible because they can restrict airflow through the ventilation system.

Do you carry a 3" blower system?
Yes. Pro Marine stocks the 3" bilge blower, 3" blower hose and 4-13 clamp.

Do you carry blower wiring supplies?
Yes. Pro Marine stocks blue butt connectors, red heat shrink and black heat shrink.

Searchable Terms

420-4, 4 inch blower hose, 4 inch bilge blower hose, marine blower hose, boat ventilation hose, bilge ventilation duct, engine compartment ventilation hose, heavy duty vinyl blower hose, 5-3715, 4 inch bilge blower, 4-17 hose clamp, German style hose clamp, 420-3, 3 inch blower hose, marine ventilation duct

What This Hose is Used For

3/4" marine hose is commonly used anywhere a boat requires flexible water plumbing with a 3/4" hose connection.

Typical applications include:

• Bilge pump discharge hose
• Livewell plumbing
• Baitwell plumbing
• Drain hose
• Thru-hull plumbing
• Marine water transfer lines

Always verify the fitting or pump outlet diameter before ordering hose.

Matching 3/4" Hose Clamp

German-Style Hose Clamp - 4-4

The recommended clamp for Pro Marine's 3/4" black and white heavy-duty marine hose.

Use a secure marine-grade clamp connection anywhere the hose attaches to a pump, thru-hull, drain fitting or livewell component.

View German-Style 4-4 Hose Clamp

3/4" Thru-Hull Fitting

3/4" Plastic Thru-Hull - 5-3050

Matching 3/4" thru-hull option for marine discharge and plumbing applications using 3/4" hose.

Pair with BHOSE-34 and the German-style 4-4 clamp when the installation calls for a 3/4" hose connection.

View 3/4" Thru-Hull

Black and White Bilge / Livewell Hose Sizes

Pro Marine stocks heavy-duty marine hose in 3/4", 1" and 1-1/8" sizes, with both black and white color options.

Prefer White 3/4" Hose?

3/4" Heavy-Duty White Marine Hose - WHOSE-34

Same 3/4" hose size in a white finish for customers who prefer white plumbing hose in bilge, livewell or other visible marine installations.

Matching Clamp: German-Style 4-4

View White 3/4" Hose

Bilge Pump Options

Pro Marine stocks several manual bilge pump capacities. Match the pump capacity, discharge connection, hose size and wiring requirements to the boat's application.

Pro Marine 500 GPH Bilge Pump - BPM500

Compact manual bilge pump rated at 500 GPH for compatible smaller bilge pumping applications.

View 500 GPH Pump

Pro Marine 1100 GPH Bilge Pump - BPM1100

Manual bilge pump rated at 1100 GPH for compatible marine bilge applications requiring increased pumping capacity.

View 1100 GPH Pump

Pro Marine 2000 GPH Bilge Pump - BPM2000

Higher-capacity manual bilge pump for compatible installations requiring substantially greater water-moving capacity.

View 2000 GPH Pump

Add Automatic Bilge Pump Operation

Bilge Pump Float Switch - FLTSWITCH

Add a float switch to a compatible bilge pump installation to allow the pump to switch on automatically when water reaches the switch's activation level.

View Bilge Float Switch

Marine Wiring Supplies

Bilge pump wiring is installed in a wet marine environment. Proper electrical connections and protection are important when installing or replacing a pump or float switch.

Blue Butt Connectors - BBC - 25 Pack

Convenient electrical connectors for compatible marine wiring repairs and installations.

View Blue Butt Connectors

1/4" Red Heat Shrink - 14R

Red heat-shrink tubing for protecting and identifying compatible positive wiring connections.

View Red Heat Shrink

1/4" Black Heat Shrink - 14B

Black heat-shrink tubing for protecting compatible electrical connections in marine installations.

View Black Heat Shrink

Bilge Hose Installation Tips

• Match hose ID to the pump, fitting or thru-hull connection.
• Use the correct clamp size for the hose.
• Avoid sharp bends that can restrict water flow.
• Keep hose runs as direct as practical.
• Support longer hose runs so they do not sag excessively.
• Check that discharge hose cannot kink when equipment or storage shifts.
• Inspect thru-hull and hose connections for leaks after installation.
• Keep electrical splices protected from moisture.

Choosing Black or White Bilge Hose

The primary difference between the Pro Marine black and white hose options in this group is color. Select the color that best suits the installation, visibility and appearance of the boat.

Both colors are available in the common 3/4", 1" and 1-1/8" sizes shown in the chart above.

Key Features and Benefits

• 3/4" inside diameter
• Heavy-duty black marine hose
• Suitable for compatible bilge and livewell plumbing
• Useful for drains and thru-hull water plumbing
• Matching German-style 4-4 clamp available
• Matching 3/4" plastic thru-hull available
• White 3/4" hose alternative available
• 1" and 1-1/8" hose sizes also available
• Bilge pumps and float switch available
• Marine wiring connectors and heat shrink available

FAQ

What size is BHOSE-34?
BHOSE-34 is 3/4" inside-diameter heavy-duty black marine hose.

Can this hose be used for a bilge pump?
Yes, when the bilge pump discharge connection requires 3/4" hose. Always verify the pump's outlet size before ordering.

Can this hose be used for a livewell?
Yes. It can be used in compatible livewell and baitwell plumbing systems requiring 3/4" hose.

Which clamp fits this hose?
Use the German-Style 4-4 Hose Clamp .

Do you carry a 3/4" thru-hull?
Yes. Pro Marine stocks the 5-3050 3/4" Plastic Thru-Hull .

Do you carry this hose in white?
Yes. The WHOSE-34 3/4" Heavy-Duty White Hose is also available.

Do you carry larger bilge and livewell hose?
Yes. Pro Marine stocks both black and white hose in 1" and 1-1/8" sizes.

Do you stock bilge pumps?
Yes. Pro Marine stocks 500 GPH, 1100 GPH and 2000 GPH bilge pump options.

Can I make the bilge pump automatic?
A compatible float switch can be incorporated into an appropriate bilge pump wiring setup for automatic operation.

Searchable Terms

BHOSE-34, 3/4 bilge hose, 3/4 livewell hose, black bilge hose, black livewell hose, marine water hose, bilge pump discharge hose, baitwell hose, boat drain hose, 3/4 marine hose, WHOSE-34, 4-4 hose clamp, German style hose clamp, 5-3050, 3/4 thru hull, BPM500, BPM1100, BPM2000, FLTSWITCH, bilge pump hose, boat plumbing hose

How to Order Bulk Fuel Hose

This hose is sold by the foot. Select the quantity based on the total continuous length of hose required for your installation.

For example, if you need approximately 8 feet of fuel hose, order a quantity of 8.

What Does USCG Type B1/B2 Fuel Hose Mean?

Marine fuel hose classifications help identify where and how a hose is designed to be used within a boat's fuel system.

The "B" designation identifies marine fuel hose that does not carry the same USCG fire-test requirement as Type A hose. For that reason, Type B hose is commonly associated with exposed or above-deck fuel-line installations, while Type A hose is the appropriate choice where the installation requires the additional fire-resistant Type A classification.

The numbers "1" and "2" refer to fuel permeation performance. Type 1 is the lower-permeation classification and is the classification normally associated with fuel-feed hose intended to contain fuel continuously. Type 2 permits greater permeation and is used for applications such as certain fill and vent arrangements.

Complete Your 5/16" Fuel Line Setup

The correct hose is only one part of a reliable marine fuel-line installation. Pro Marine stocks the matching clamps, primer bulb and installation tools needed to build or service your fuel line.

Oetiker 4-153 Ear Clamp - 10 Pack

The matching Oetiker ear clamp for this MPI 5/16" Type B fuel hose. Provides a clean, secure connection at fuel fittings and components.

View Oetiker 4-153 Clamp

Pro Marine 8004 - 5/16" Primer Bulb

5/16" primer bulb for building or servicing a marine outboard fuel-line assembly using 5/16" fuel hose.

View 5/16" Primer Bulb

Oetiker Standard Jaw Pincer Tool

Installation tool for properly closing Oetiker ear clamps when assembling marine fuel lines.

View Oetiker Pincer Tool

Pro Marine Oetiker Clamp Pack with Tool

Complete assortment containing common Oetiker clamp sizes plus the installation tool. A convenient option for marine shops, technicians and customers servicing multiple hose sizes.

View Oetiker Clamp Pack

Mercury OEM 5/16" Fuel Hose Available

Mercury OEM 5/16" Silver Fuel Hose

Prefer the Mercury factory fuel hose? Pro Marine also stocks Mercury OEM 5/16" silver fuel hose sold by the foot.

The Mercury hose uses a different outside diameter than this MPI hose and therefore requires a different Oetiker clamp: 4-145.

View Mercury OEM 5/16" Fuel Hose

View Oetiker 4-145 Clamp for Mercury Fuel Hose

Why Doesn't Every 5/16" Fuel Hose Use the Same Clamp?

5/16" identifies the hose's inside diameter, not its outside diameter. Different hose constructions can have different wall thicknesses and therefore different outside diameters.

That is why this MPI 315-056 Type B hose uses Oetiker clamp 4-153, while the Mercury OEM 5/16" silver hose uses Oetiker clamp 4-145.

Always match the clamp to the specific hose being installed rather than selecting a clamp based only on the hose's inside diameter.

What This Fuel Hose is Used For

This 5/16" bulk marine fuel hose can be used when building, repairing or replacing fuel lines in compatible marine applications where USCG Type B hose is appropriate.

Selling the hose by the foot allows boat owners and marine technicians to build the required length and add the appropriate primer bulb, connectors, fittings and clamps for the specific installation.

Building a 5/16" Outboard Fuel Line

A typical 5/16" outboard fuel-line setup may require:

• 5/16" marine fuel hose
• 5/16" primer bulb
• Correct engine-side fuel fitting or connector
• Correct tank-side fitting or connection
• Correctly sized Oetiker ear clamps
• Oetiker pincer tool for clamp installation

The exact components depend on the engine, fuel tank and layout of the boat's fuel system.

Key Features & Benefits

• 5/16" inside diameter marine fuel hose
• USCG Type B1/B2 rated hose
• MPI Products marine fuel line
• Designed for exposed and above-deck applications where Type B hose is permitted
• Sold by the foot for custom-length installations
• Matching Oetiker 4-153 clamp available
• Compatible 5/16" primer bulb available
• Type A 5/16" alternative available for applications requiring Type A hose
• Mercury OEM 5/16" silver fuel hose alternative available

Need Help Choosing the Right Marine Fuel Hose?

Hose diameter is only one part of choosing the correct marine fuel line. The hose classification, installation location, fuel-system design, fittings, primer bulb and clamp size should also be considered.

Visit the Pro Marine Fuel Line Technical Center

FAQ

What size is this fuel hose?
This hose has a 5/16" inside diameter.

Is the hose sold by the foot?
Yes. Order the quantity corresponding to the number of feet needed for your installation.

What does USCG Type B mean?
Type B marine fuel hose meets the applicable SAE marine fuel-hose performance classification but does not carry the same USCG fire-test requirement as Type A hose. It is commonly used in exposed or above-deck applications where Type B hose is permitted.

What is the difference between B1 and B2?
The number identifies the hose's permeation classification. Type 1 has the lower permeation limit and is normally associated with fuel-feed applications intended to contain fuel continuously. Type 2 allows greater permeation and is used for certain other fuel-system applications.

Can I use this hose below deck?
Fuel-hose requirements depend on the installation. For enclosed or below-deck installations requiring the Type A fire-resistant classification, use the 5/16" Type A fuel hose .

Which Oetiker clamp fits this hose?
Use the Oetiker 4-153 ear clamp with this MPI 315-056 hose.

Which primer bulb fits this hose?
The Pro Marine 8004 5/16" Primer Bulb is the matching hose size.

Do you sell a Mercury OEM 5/16" fuel hose?
Yes. Pro Marine stocks Mercury OEM 5/16" silver fuel hose by the foot. The Mercury hose uses Oetiker clamp 4-145 rather than the 4-153 clamp used with this MPI hose.

Why are there different clamps for two 5/16" hoses?
The 5/16" measurement refers to inside diameter. Hose outside diameter can vary depending on wall thickness and construction, so the correct Oetiker clamp must be matched to the specific hose.

Searchable Terms

315-056, MPI 315-056, 5/16 fuel hose, 5/16 marine fuel hose, 5/16 boat fuel line, 5/16 outboard fuel hose, USCG Type B fuel hose, Type B1 fuel hose, Type B2 fuel hose, marine fuel line by the foot, bulk marine fuel hose, above deck fuel hose, outboard fuel line, boat fuel hose, Oetiker 4-153, 4-153 fuel hose clamp, 5/16 primer bulb, marine primer bulb, Mercury 5/16 fuel hose, Type A marine fuel hose, Type B marine fuel hose

What This Rigging Tube is Used For

Outboard rigging tube provides a protective outer covering around the collection of cables, hoses and wiring running between the boat and outboard engine.

Instead of leaving individual components exposed at the transom, the rigging tube helps combine them into a cleaner and more organized bundle.

Depending on the boat and engine configuration, the rigging bundle may include:

• Engine wiring harnesses
• Battery cables
• Throttle and shift cables
• Hydraulic steering hoses
• Fuel hose where appropriate for the installation
• Gauge and network wiring
• Trim wiring
• Accessory wiring

Matching White 2" Transom Flange

2" White Transom Flange - TFLANGE-2W

The TFLANGE-2W is the matching white transom flange for a clean 2" white rigging-tube installation.

The flange provides a finished transition point where the rigging tube meets the boat's transom while keeping the white color scheme consistent.

View 2" White Transom Flange

Building a Complete White Outboard Rigging System?

For a coordinated white installation, combine the RIGTUBE-W 2" white rigging tube with the TFLANGE-2W white transom flange.

Other 2" Transom Flange Options

2" Black Transom Flange - TFLANGE-2

Black version of the standard 2" transom flange for installations where black rigging hardware is preferred.

View Black Transom Flange

2" T-Flange with Fuel Port - TFLANGE-FP

Alternative 2" transom flange with a separate fuel-hose port for installations where the fuel line is routed independently from the main rigging bundle.

View T-Flange with Fuel Port

Need to Join Two Sections of 2" Rigging Tube?

2" Rigging Hose Union - TUNION

The TUNION connects two compatible sections of 2" rigging tube and can be useful for extensions, repairs and rerigging projects.

View 2" Rigging Hose Union

Prefer Black Rigging Tube?

2" Black Outboard Rigging Tube - RIGTUBE-B

The same traditional 2" rigging-tube style is also available in black for boats where black better matches the engine or transom.

View 2" Black Rigging Tube

Need a Split Rigging Tube?

Traditional closed rigging tube works well when the wiring, cables and hoses can be fed through the tube. If the engine is already connected, Pro Marine also stocks split options that can be installed around the existing rigging bundle.

2" Split Conduit - SPLITTUBING-2

Split protective conduit that can be installed around an existing outboard rigging bundle.

View 2" Split Conduit

2" Wrappable Split Braided Tube - F6N200

Flexible braided wrap for protecting and organizing existing outboard wiring, hoses and cable bundles without completely disconnecting them.

View 2" Braided Rigging Tube

Traditional Rigging Tube vs. Split Rigging Protection

Installation Tips

• Measure the complete rigging bundle before selecting tube size.
• Plan the routing before feeding cables and hoses through the tube.
• Avoid tightly compressing wiring, steering hoses or control cables.
• Keep the rigging bundle free from sharp bends and pinch points.
• Leave enough slack for the outboard to steer fully in both directions.
• Check the engine through its full trim and tilt range after installation.
• Inspect wiring, hoses and cables for damage before enclosing them.
• Use a compatible transom flange for a clean, supported installation.

When Should Outboard Rigging Tube Be Replaced?

Inspect the exposed rigging tube whenever the engine or transom rigging is serviced.

Replacement may be appropriate if you find:

• Cracking or splitting
• Heavy abrasion or chafing
• UV deterioration
• Sections that have become excessively stiff or damaged
• Exposed wiring, hoses or cables
• Damage at the transom-flange connection
• A rigging bundle that has outgrown the existing tube

Key Features and Benefits

• 2" white outboard rigging tube
• Traditional closed rigging-tube design
• Helps organize engine wiring, cables and hoses
• Helps protect exposed outboard rigging
• White finish for a clean marine installation
• Matching white TFLANGE-2W transom flange available
• Black 2" rigging tube and flange also available
• Fuel-port flange option available
• 2" rigging hose union available
• Split conduit and braided alternatives available

FAQ

What size is RIGTUBE-W?
RIGTUBE-W is a 2" white outboard rigging tube.

What is outboard rigging tube used for?
It provides an outer protective covering that helps organize the wiring, cables and hoses running between the boat and outboard engine.

Which white flange goes with RIGTUBE-W?
The matching white option is the TFLANGE-2W 2" White Transom Flange .

Do you have a black version of this rigging tube?
Yes. Pro Marine also stocks RIGTUBE-B 2" Black Rigging Tube .

Do you have a black 2" transom flange?
Yes. See the TFLANGE-2 2" Black Transom Flange .

What if I need a separate fuel-line port?
See the TFLANGE-FP 2" T-Flange with Fuel Port .

Can I connect two sections of 2" rigging tube?
Pro Marine stocks the TUNION 2" Rigging Hose Union for joining compatible sections of 2" rigging tube.

What if my engine is already rigged?
If disconnecting and feeding the existing rigging through a closed tube is impractical, consider 2" split conduit or 2" wrappable split braided tube .

Searchable Terms

RIGTUBE-W, 2 inch white rigging tube, white outboard rigging tube, white marine rigging hose, outboard engine rigging tube, marine cable protection, outboard wiring tube, TFLANGE-2W, white transom flange, TFLANGE-2, TFLANGE-FP, TUNION, RIGTUBE-B, SPLITTUBING-2, F6N200

What Rigging Tube is Used For

Outboard rigging tube is used to cover and organize the group of components that runs from the boat's transom to the engine.

Depending on the boat and engine, the rigging bundle may contain:

• Engine wiring harnesses
• Battery cables
• Control cables
• Fuel hose
• Hydraulic steering hoses
• Gauge and network wiring
• Trim and accessory wiring
• Other engine-related hoses and cables

Instead of leaving these components exposed individually, rigging tube keeps them grouped together and provides a more finished installation.

Why Use Outboard Rigging Tube?

Rigging components are constantly exposed to engine movement, steering movement, vibration, sun and the marine environment. A proper rigging sleeve helps keep the bundle organized while adding a layer of physical protection.

Benefits include:

• Cleaner transom appearance
• Groups multiple cables and hoses together
• Helps reduce abrasion between individual rigging components
• Helps protect wiring and hoses from snagging
• Makes engine-compartment and transom rigging easier to organize
• Can simplify future inspection and service

Black and White 2" Rigging Tube Options

2" Black Rigging Tube - RIGTUBE-B

Black 2" marine rigging tube sold by the foot for custom-length outboard rigging installations.

Current Product

2" White Rigging Tube - RIGTUBE-W

Same 2" rigging-tube size in white for installations where a lighter color better matches the boat or transom.

View White 2" Rigging Tube

Transom Flange Options

A transom flange provides a finished connection point where the rigging tube enters the boat.

2" T-Flange with Fuel Port - TFLANGE-FP

TH Marine universal 2" transom rigging flange with an additional fuel-hose port. Useful when the fuel line needs to be routed separately from the main rigging bundle.

View T-Flange with Fuel Port

2" Transom Flange - TFLANGE-2

MPI Products black 2" transom flange for creating a clean transition between the boat and the 2" rigging tube.

View 2" Transom Flange

2" Rigging Hose Union

TH Marine 2" Rigging Hose Union - TUNION

Universal 2" rigging hose union for joining two sections of compatible 2" rigging tube.

A union can be useful when extending an existing rigging-tube run or joining sections during a repair or rerigging project.

View 2" Rigging Hose Union

Split Conduit Rigging Tube

Split conduit is useful when you need protective tubing that can be installed around existing wiring or hoses without disconnecting the entire rigging bundle.

1.5" Split Conduit Tubing - SPLITTUBING-15

MPI Products black split conduit with 1.5" ID, sold by the foot. The split design allows the tubing to wrap around existing rigging.

View 1.5" Split Conduit

2" Split Conduit Tubing - SPLITTUBING-2

MPI Products black split conduit with 2" ID, sold by the foot. A convenient alternative for existing cable and hose bundles that cannot easily be fed through a closed rigging tube.

View 2" Split Conduit

Wrappable Split Braided Rigging Tube

Wrappable braided tubing provides another option for organizing existing wiring, hoses and cables without having to feed the entire bundle through a conventional closed tube.

1.5" Wrappable Split Braided Tube - F6N150

Universal black 1.5" wrappable split braided tubing. Pro Marine lists this option in a 5-foot length.

View 1.5" Braided Rigging Tube

2" Wrappable Split Braided Tube - F6N200

Universal black 2" wrappable split braided tubing for larger existing rigging bundles. Pro Marine lists this option in a 5-foot length.

View 2" Braided Rigging Tube

Which Rigging Tube Style Should I Choose?

Rigging Tube Installation Tips

• Measure the rigging bundle before selecting tubing size.
• Allow enough space inside the tube so cables and hoses are not crushed.
• Leave sufficient length for full steering movement.
• Verify that trim and tilt movement does not pull on the rigging bundle.
• Avoid extremely tight bends in fuel hose, hydraulic hose and control cables.
• Keep wiring away from sharp edges where it enters or exits the rigging tube.
• Use a transom flange for a clean entry point into the boat.
• Inspect older tubing for cracking, splitting or abrasion.
• Use split conduit or braided wrap when removing existing rigging is impractical.

When Should Rigging Tube Be Replaced?

Outboard rigging tube lives in a high-movement, high-UV area of the boat. Over time it can become worn or damaged.

Consider replacement if you notice:

• Cracking or splitting
• Tears in the tube
• Severe fading or UV deterioration
• Chafing through the outer surface
• Tube separating from the transom flange
• Rigging components becoming exposed
• A tube that is too short after an engine or steering change

Black vs. White Rigging Tube

Pro Marine offers the 2" traditional rigging tube in both black and white.

Choose the color that best matches the boat, engine and transom rigging. Both options provide the same basic function of grouping and protecting the exposed rigging bundle.

Key Features and Benefits

• 2" marine rigging tube
• Black finish
• Sold by the foot for custom-length installations
• Organizes outboard wiring, hoses and cables
• Helps protect rigging from abrasion and snagging
• White 2" version available
• Standard and fuel-port transom flanges available
• 2" rigging hose union available
• 1.5" and 2" split conduit available
• 1.5" and 2" wrappable braided tube available

FAQ

What size is RIGTUBE-B?
RIGTUBE-B is 2" black marine rigging tube.

Is the rigging tube sold by the foot?
Yes. RIGTUBE-B is sold by the foot so you can order the length needed for the installation.

What goes inside outboard rigging tube?
Depending on the installation, the tube can organize wiring harnesses, battery cables, control cables, fuel hose, hydraulic steering hoses and other engine-related cables or hoses.

Do you carry this rigging tube in white?
Yes. Pro Marine stocks RIGTUBE-W 2" White Rigging Tube .

Do you carry a 2" transom flange?
Yes. Pro Marine stocks the TFLANGE-2 2" Transom Flange and a TFLANGE-FP 2" flange with a fuel port .

Can two pieces of 2" rigging tube be joined?
Pro Marine stocks the TUNION 2" Rigging Hose Union for compatible applications.

What if I do not want to disconnect the existing cables?
Split conduit or wrappable braided tubing can be installed around an existing bundle, making them useful alternatives when feeding the rigging through a closed tube would be difficult.

Do you carry split conduit?
Yes. Pro Marine stocks 1.5" split conduit and 2" split conduit.

Searchable Terms

RIGTUBE-B, 2 inch rigging tube, black rigging tube, outboard rigging hose, outboard cable tube, marine rigging hose, transom rigging tube, engine rigging sleeve, boat cable protection, outboard wiring tube, RIGTUBE-W, TFLANGE-2, TFLANGE-FP, TUNION, SPLITTUBING-15, SPLITTUBING-2, F6N150, F6N200

What This Hose is Used For

BHOSE-1 is designed for marine water-plumbing applications that use a 1" hose connection.

Common uses include:

• Bilge pump discharge hose
• Livewell plumbing
• Baitwell plumbing
• Drain hose
• Marine water transfer lines
• General boat plumbing applications

Always verify the fitting, pump outlet or plumbing connection diameter before selecting hose.

Matching 1" Hose Clamp

German-Style Hose Clamp - 4-5

The recommended clamp for Pro Marine's 1" black and white heavy-duty marine hose.

Use a secure clamp connection wherever the hose attaches to a pump, livewell fitting, drain or other marine plumbing component.

View German-Style 4-5 Hose Clamp

Black and White Bilge / Livewell Hose Sizes

Pro Marine stocks heavy-duty marine hose in 3/4", 1" and 1-1/8" sizes in both black and white.

Prefer White 1" Hose?

1" Heavy-Duty White Marine Hose - WHOSE-1

Same 1" hose size in a white finish for installations where a lighter hose color is preferred.

Matching Clamp: German-Style 4-5

View White 1" Hose

Bilge Pump Options

Pro Marine stocks multiple bilge pump capacities. Match the pump, discharge fitting and hose diameter to the requirements of the boat.

Pro Marine 500 GPH Bilge Pump - BPM500

Compact bilge pump rated at 500 GPH for compatible smaller bilge installations.

View 500 GPH Pump

Pro Marine 1100 GPH Bilge Pump - BPM1100

1100 GPH bilge pump for compatible marine bilge applications requiring increased water-moving capacity.

View 1100 GPH Pump

Pro Marine 2000 GPH Bilge Pump - BPM2000

High-capacity 2000 GPH bilge pump for compatible installations requiring substantially greater pumping capacity.

View 2000 GPH Pump

Add Automatic Bilge Pump Operation

Bilge Pump Float Switch - FLTSWITCH

Add a float switch to a compatible bilge pump circuit so the pump can activate automatically when water rises to the switch's activation level.

View Bilge Float Switch

Bilge Pump Wiring Supplies

Bilge pumps and float switches operate in a wet environment, so electrical connections should be properly secured and protected from moisture.

Blue Butt Connectors - BBC - 25 Pack

Electrical butt connectors for compatible marine wiring repairs and bilge pump installations.

View Blue Butt Connectors

1/4" Red Heat Shrink - 14R

Red heat-shrink tubing for protecting compatible electrical splices and identifying positive wiring.

View Red Heat Shrink

1/4" Black Heat Shrink - 14B

Black heat-shrink tubing for protecting compatible electrical connections in marine wiring installations.

View Black Heat Shrink

Bilge and Livewell Hose Installation Tips

• Verify the hose ID required by the pump or fitting before ordering.
• Use the matching clamp size for the hose.
• Avoid sharp bends and kinks that can reduce water flow.
• Keep discharge runs as short and direct as practical.
• Support longer hose runs to reduce sagging.
• Make sure stored gear cannot crush or kink the hose.
• Inspect all hose and fitting connections for leaks after installation.
• Protect bilge pump electrical connections from moisture.

Black vs. White Marine Hose

Pro Marine offers this heavy-duty marine hose in both black and white. The color can be selected based on the boat's layout, visibility and installation preference.

Both colors are available in 3/4", 1" and 1-1/8" sizes.

Key Features and Benefits

• 1" inside diameter
• Heavy-duty black marine hose
• Suitable for compatible bilge and livewell plumbing
• Useful for baitwell and general marine water systems
• Matching German-style 4-5 clamp available
• White 1" hose alternative available
• 3/4" and 1-1/8" sizes also available
• Bilge pumps available in 500, 1100 and 2000 GPH options
• Float switch available for compatible automatic bilge systems
• Butt connectors and heat shrink available for wiring installation

FAQ

What size is BHOSE-1?
BHOSE-1 is 1" inside-diameter heavy-duty black marine hose.

Can this hose be used for a bilge pump?
Yes, when the pump's discharge outlet requires 1" hose.

Can this hose be used for a livewell?
Yes. It can be used in compatible livewell and baitwell plumbing systems requiring 1" hose.

Which clamp fits this hose?
Use the German-Style 4-5 Hose Clamp .

Do you carry this hose in white?
Yes. The WHOSE-1 1" Heavy-Duty White Hose is available.

Do you carry other hose sizes?
Yes. Pro Marine also stocks 3/4" and 1-1/8" heavy-duty hose in both black and white.

Do you stock bilge pumps?
Yes. Pro Marine stocks 500 GPH, 1100 GPH and 2000 GPH bilge pump options.

Does a larger bilge pump automatically require 1" hose?
Not necessarily. Pump capacity and discharge fitting size are separate specifications. Verify the outlet size on the pump before selecting hose.

Can I add automatic bilge operation?
A compatible float switch can be added to an appropriate bilge pump wiring setup.

Searchable Terms

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