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Outboard Motor Parts | Mercury, Yamaha, Suzuki & More
Shop outboard motor parts for maintenance, repair, troubleshooting, and full marine engine rebuild projects. This category includes OEM parts and quality OEM specification aftermarket products from Pro Marine, along with replacement marine parts for Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard engines.
Use this section to browse outboard parts by brand and engine system, including cooling, fuel delivery, ignition and electrical, intake, internal engine components, lower unit parts, steering, trim, transom, midsection, engine oil, service kits, gaskets, seals, carburetor parts, water pump parts, and rebuild components.
Shop Outboard Categories
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-tec Outboard OMC, Johnson, Evinrude, and E-tec parts 
Mercury Outboard Mercury and Mariner service and rebuild parts 
Suzuki Outboard Suzuki maintenance, lower unit, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha service, repair, and rebuild parts Common Outboard Parts Found in This Category
- Water pump kits, impellers, thermostats, and cooling system parts
- Carburetor kits, fuel pumps, fuel filters, and fuel system components
- Ignition coils, stators, switch boxes, rectifiers, sensors, and electrical parts
- Pistons, piston rings, bearings, crankshafts, sleeves, gaskets, and rebuild parts
- Lower unit seals, bearings, gears, driveshaft parts, and gearcase components
- Steering parts, control cables, trim parts, and transom components
- Engine oil, gear lube, service kits, spark plugs, seal kits, and routine maintenance parts
Common Outboard Problems and Where to Start
- Overheating: inspect the water pump, impeller, thermostat, cooling passages, and engine anodes.
- Hard starting or rough idle: check carburetor parts, fuel delivery, ignition components, spark plugs, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes, sensors, wiring, and related electrical components.
- Low compression or poor power: inspect pistons, rings, gaskets, cylinder condition, bearings, and internal engine components.
- Milky gear lube or gearcase noise: check lower unit seals, bearings, gears, driveshaft parts, and prop shaft components.
Frequently Asked Questions
What is the difference between OEM and aftermarket outboard parts?
OEM parts are made by the original engine manufacturer. Aftermarket parts are replacement parts made by other manufacturers to fit the same application. Pro Marine provides quality OEM specification aftermarket products designed for marine maintenance, repair, and rebuild work.
How do I find parts for my outboard engine?
Start by selecting your outboard brand, then choose the correct engine system category. Use your model number, serial number, horsepower, and year range to confirm fitment before ordering parts.
What information do I need before ordering outboard parts?
You should have the engine manufacturer, horsepower, model number, serial number, and any OEM part numbers from the original component when available. This helps avoid ordering parts that look similar but fit a different engine family.
Are aftermarket outboard parts reliable?
Yes, quality aftermarket outboard parts are commonly used by marine mechanics and rebuilders. Pro Marine offers OEM specification aftermarket products for many common outboard repair, maintenance, and rebuild applications.
What brands are included in the outboard category?
This category includes Chrysler Force, Honda, Johnson Evinrude E-tec, Mercury, Suzuki, Tohatsu Nissan, and Yamaha outboard parts.
Tip: Before ordering outboard parts, confirm your engine brand, horsepower, model number, serial number, and year range whenever possible.
Mercury Verado Gen A/B Power Steering Hose Kit 8M0078213
Mercury Verado hydraulic power steering hose kit 8M0078213 for Verado systems using the Generation A / Generation B power steering pump. This kit includes both 16ft helm-to-pump hoses: the non-pressure return hose and the pressure-side hose.
Important Application Note
This hose kit is for Mercury Verado hydraulic power steering systems that use the Generation A / Generation B style power steering pump. Always verify your pump style, hose routing, and required hose length before ordering.
Compatible Applications
If you are converting, replacing, or refreshing a Verado Gen A/B hydraulic steering setup, confirm that 16ft hoses are the correct length for your boat layout.
What is Included
Recommended Damper Hose for Noise Reduction
The pressure-side fitting on this hose kit can connect directly into the Mercury Verado power steering pump. However, to help minimize steering system noise, it is recommended to install the Mercury damper hose between the pressure hose and the pump.
Recommended part: Mercury Verado Power Steering Damper Hose 897643A01 .
Related Verado Power Steering Parts
Shorter Verado Hose Kit
Need the shorter version of this Mercury Verado helm-to-power-steering-pump hose kit? Use 8M0078210 for the shorter hose option.
View Shorter Hose Kit
Verado Power Steering Damper Hose
Recommended between the pressure-side hose and the power steering pump to help reduce noise in Mercury Verado hydraulic steering systems.
View Damper Hose
Gen A/B Power Steering Pump Replacement
Replacement power steering pump option for Mercury Verado Generation A and Generation B hydraulic steering systems.
View Power Steering PumpWhat This Hose Kit is Used For
This Mercury Verado power steering hose kit connects the helm to the Generation A / Generation B power steering pump in a hydraulic Verado steering system. The kit includes both the pressure-side hose and the non-pressure return-side hose required for the helm-to-pump connection.
It is commonly used when replacing worn hoses, converting to a Gen A/B Verado pump setup, or completing a Mercury Verado hydraulic power steering repair.
Verado Power Steering Help
Mercury Verado Power Steering Walkthrough
Need help understanding Mercury Verado power steering pumps, hose routing, and Gen A/B steering system components? View our walkthrough for additional guidance before ordering.
View Verado Power Steering WalkthroughKey Features and Benefits
Includes both 16ft helm-to-pump hoses for pressure and non-pressure routing.
Designed for Mercury Verado systems using the Gen A / Gen B power steering pump style.
Pressure-side hose can connect directly to the pump, with damper hose recommended for noise reduction.
Useful for Verado power steering repairs, hose replacement, and Gen A/B pump conversion setups.
FAQ
What does this Mercury Verado hose kit include?
This kit includes a 16ft helm-to-power-steering-pump non-pressure hose and a 16ft helm-to-power-steering-pump pressure-side hose.
Does the pressure hose connect directly to the pump?
Yes, the pressure-side fitting can connect directly into the power steering pump. For noise reduction, Pro Marine recommends adding damper hose 897643A01 between the hose and pump.
What power steering pump does this hose kit work with?
This hose kit is intended for Mercury Verado hydraulic power steering systems using the Generation A / Generation B power steering pump style.
Is there a shorter version of this hose kit?
Yes. If you need the shorter Mercury Verado helm-to-pump hose kit, use 8M0078210.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
8M0078213, Mercury 8M0078213, Verado power steering hose, Mercury Verado helm to pump hose, Gen A power steering hose, Gen B power steering hose, Verado hydraulic steering hose, 897643A01, 8M0078210, 8M0134736P, Mercury Verado power steering pump, Verado damper hose
Mercury Verado Gen A/B Power Steering Hose Kit 8M0078210
Mercury Verado hydraulic power steering hose kit 8M0078210 for Verado systems using the Generation A / Generation B power steering pump. This kit includes both 10ft helm-to-pump hoses: the non-pressure return hose and the pressure-side hose.
Important Application Note
This 10ft hose kit is for Mercury Verado hydraulic power steering systems that use the Generation A / Generation B style power steering pump. Always verify your pump style, hose routing, and required hose length before ordering.
Compatible Applications
If you are converting, replacing, or refreshing a Verado Gen A/B hydraulic steering setup, confirm that 10ft hoses are the correct length for your boat layout.
What is Included
Recommended Damper Hose for Noise Reduction
The pressure-side fitting on this hose kit can connect directly into the Mercury Verado power steering pump. However, to help minimize steering system noise, it is recommended to install the Mercury damper hose between the pressure hose and the pump.
Recommended part: Mercury Verado Power Steering Damper Hose 897643A01 .
Related Verado Power Steering Parts
Longer 16ft Verado Hose Kit
Need the longer version of this Mercury Verado helm-to-power-steering-pump hose kit? Use 8M0078213 for the 16ft hose option.
View 16ft Hose Kit
Verado Power Steering Damper Hose
Recommended between the pressure-side hose and the power steering pump to help reduce noise in Mercury Verado hydraulic steering systems.
View Damper Hose
Gen A/B Power Steering Pump Replacement
Replacement power steering pump option for Mercury Verado Generation A and Generation B hydraulic steering systems.
View Power Steering PumpWhat This Hose Kit is Used For
This Mercury Verado power steering hose kit connects the helm to the Generation A / Generation B power steering pump in a hydraulic Verado steering system. The kit includes both the pressure-side hose and the non-pressure return-side hose required for the helm-to-pump connection.
It is commonly used when replacing worn hoses, converting to a Gen A/B Verado pump setup, or completing a Mercury Verado hydraulic power steering repair where a 10ft hose length is required.
Verado Power Steering Help
Mercury Verado Power Steering Walkthrough
Need help understanding Mercury Verado power steering pumps, hose routing, and Gen A/B steering system components? View our walkthrough for additional guidance before ordering.
View Verado Power Steering WalkthroughKey Features and Benefits
Includes both 10ft helm-to-pump hoses for pressure and non-pressure routing.
Designed for Mercury Verado systems using the Gen A / Gen B power steering pump style.
Pressure-side hose can connect directly to the pump, with damper hose recommended for noise reduction.
Useful for Verado power steering repairs, hose replacement, and Gen A/B pump conversion setups.
FAQ
What does this Mercury Verado hose kit include?
This kit includes a 10ft helm-to-power-steering-pump non-pressure hose and a 10ft helm-to-power-steering-pump pressure-side hose.
Does the pressure hose connect directly to the pump?
Yes, the pressure-side fitting can connect directly into the power steering pump. For noise reduction, Pro Marine recommends adding damper hose 897643A01 between the hose and pump.
What power steering pump does this hose kit work with?
This hose kit is intended for Mercury Verado hydraulic power steering systems using the Generation A / Generation B power steering pump style.
Is there a longer version of this hose kit?
Yes. If you need the longer 16ft Mercury Verado helm-to-pump hose kit, use 8M0078213.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
8M0078210, Mercury 8M0078210, Verado power steering hose, Mercury Verado helm to pump hose, Gen A power steering hose, Gen B power steering hose, Verado hydraulic steering hose, 897643A01, 8M0078213, 8M0134736P, Mercury Verado power steering pump, Verado damper hose, 10ft Verado hose kit
6 Cylinder
V6
135hp Optimax 2.5L
140hp Jet 2.5L
150hp Optimax 2.5L
175hp EFI 2.5L
175hp 2.5L Optimax
200hp 3.0L Optimax
134-645618
134645618
96455A18
96455T18
893371T20
893371T30
893371T10
EMP Thermostat Assembly
Aftermarket Yamaha 4.2L V6 Thermostat
This EMP thermostat assembly is an aftermarket replacement for Yamaha OEM part number 6CE-12411-00-00 and Mercury cross reference 8M6012799.
The thermostat regulates engine cooling system temperature to help maintain proper engine operating temperature, fuel efficiency, corrosion protection, and reliable engine performance.
Compatible Applications
| Engine Range | Engine Type | System | Application Notes |
|---|---|---|---|
| Yamaha F225 / LF225 | 4.2L FourStroke V6 | Cooling System | Select models using thermostat 6CE-12411-00-00 |
| Yamaha F250 / LF250 | 4.2L FourStroke V6 | Cooling System | Select offshore and standard rotation applications |
| Yamaha F300 / LF300 | 4.2L FourStroke V6 | Cooling System | Used in compatible offshore cooling systems |
| Yamaha VF250 | V MAX SHO 4.2L | Cooling System | Select SHO cooling system applications |
Mercury OEM number 8M6012799 cross references this Yamaha thermostat for compatible Mercury-branded Yamaha powerhead applications.
Always verify your model number, serial number, and cooling system diagram before ordering thermostats and cooling system components.
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| EMP | 6CE-12411E |
| Replaces Yamaha OEM | 6CE-12411-00-00 |
| Replaces Mercury OEM | 8M6012799 |
| Alternate Search Format | 6CE124110000 |
OEM and Pro Marine Alternatives
What This Thermostat is Used For
This thermostat is used in compatible Yamaha and Mercury FourStroke cooling systems to regulate engine operating temperature.
The thermostat controls coolant flow through the engine to help the engine warm up properly and maintain consistent operating temperature.
A faulty thermostat may contribute to overheating, improper engine temperature, poor fuel efficiency, or excessive engine wear.
Replacing worn thermostats during cooling system maintenance helps maintain reliable engine performance and cooling system operation.
Key Features and Benefits
- EMP aftermarket thermostat assembly
- Replaces Yamaha thermostat 6CE-12411-00-00
- Fits select Yamaha F225, F250, F300, LF-series, and VF250 models
- Designed for Yamaha 4.2L V6 cooling systems
- Helps maintain proper engine operating temperature
- Supports cooling system performance and engine efficiency
- Aftermarket alternative to OEM Yamaha thermostat
Thermostat Details
- Brand: EMP
- Part Type: Thermostat Assembly
- EMP Part Number: 6CE-12411E
- Replaces OEM: Yamaha 6CE-12411-00-00
- Mercury Cross Reference: 8M6012799
- Application: Yamaha 4.2L V6 Cooling Systems
- System: Cooling System
- Use: Engine temperature regulation
- Quantity Sold: Each
FAQ
What does EMP 6CE-12411E replace?
This thermostat replaces Yamaha OEM thermostat 6CE-12411-00-00 and Mercury thermostat 8M6012799.
What engines does this thermostat fit?
This thermostat fits select Yamaha F225, F250, F300, LF-series, and VF250 4.2L V6 outboards.
What does this thermostat do?
It regulates engine cooling system temperature and coolant flow.
Can a bad thermostat cause overheating?
Yes. A faulty thermostat may restrict coolant flow or prevent proper engine temperature regulation.
Is this an OEM Yamaha thermostat?
No. This is an EMP aftermarket replacement thermostat.
Are OEM and Pro Marine versions available?
Yes. OEM Yamaha and Pro Marine replacement versions are also available.
Should I verify fitment before ordering?
Yes. Yamaha used multiple thermostat configurations depending on model and production range.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Cooling system components should be installed only after confirming correct fitment.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
6CE-12411E, 6CE-12411-00-00, 8M6012799, EMP thermostat, Yamaha thermostat, Yamaha 4.2 thermostat, Yamaha F225 thermostat, Yamaha F250 thermostat, Yamaha F300 thermostat, Yamaha LF250 thermostat, Yamaha LF300 thermostat, Yamaha VF250 thermostat, Mercury thermostat, Mercury 8M6012799, offshore thermostat, cooling system thermostat, FourStroke thermostat
6CE-12411-00-00
8M6012799
6hp
8hp
9.9hp
10hp
15hp
18hp
20hp
25hp
98450A1
98450A10
98450A3
98450A5
OEM Mercury Racing 500R Thermostat Assembly
Mercury Thermostat Assembly 8M0210477 For 500R V8 Outboards
The Mercury 8M0210477 thermostat assembly is a genuine OEM Mercury Racing cooling system component used on Mercury Racing 500R 4.6L V8 FourStroke outboards.
This thermostat helps maintain proper engine operating temperature by regulating coolant flow through the engine cooling system. Replacing a worn or sticking thermostat helps maintain performance, fuel efficiency, and cooling system reliability.
Compatible Applications
| Engine Family | Horsepower | Engine Platform | Serial Number Range |
|---|---|---|---|
| Mercury Racing | 500R | 4.6L V8 FourStroke | 1E099432 & Newer |
Mercury thermostat assembly 8M0210477 fits Mercury Racing 500R 4.6L V8 FourStroke outboards with serial numbers 1E099432 and newer.
Always verify your engine serial number before ordering cooling system components.
Related Intake Hose Clamp
Mercury recommends replacing damaged hose clamps during cooling system service. The intake hose clamp kit below is commonly serviced along with thermostat-related repairs.
Mercury Intake Hose Clamp Kit
OEM Mercury clamp kit 888988008. Includes two intake hose clamps commonly serviced during cooling system maintenance and thermostat replacement.
View ProductOEM Part Numbers
| Brand | Part Number |
|---|---|
| Mercury Marine | 8M0210477 |
What This Thermostat Does
The thermostat regulates engine operating temperature by controlling the flow of cooling water through the engine.
A properly functioning thermostat helps the engine reach and maintain the correct operating temperature while protecting internal components from overheating.
Thermostats are commonly inspected and replaced during major scheduled maintenance intervals on high-performance Mercury Racing engines.
Key Features and Benefits
- Genuine OEM Mercury Racing thermostat assembly
- Fits Mercury Racing 500R 4.6L V8 outboards
- Fits serial number 1E099432 and newer
- 160° thermostat assembly
- Helps maintain proper engine operating temperature
- Supports cooling system efficiency and reliability
- Direct OEM replacement part
- Used during scheduled cooling system maintenance
Part Details
- Part Number: 8M0210477
- Product Type: Thermostat Assembly
- Brand: Mercury Marine
- Application: Mercury Racing 500R
- Engine: 4.6L V8 FourStroke
- Serial Range: 1E099432 & Newer
- OEM Mercury Part: Yes
FAQ
What engine does Mercury thermostat 8M0210477 fit?
This thermostat fits Mercury Racing 500R 4.6L V8 FourStroke outboards
with serial numbers 1E099432 and newer.
How many thermostats does a Mercury 500R use?
Mercury 500R engines using this application require one thermostat assembly.
What does a thermostat do?
The thermostat regulates engine operating temperature by controlling
cooling water flow through the engine.
Should I replace hose clamps during cooling system service?
Inspect hose clamps whenever servicing the cooling system. Replace damaged
or corroded clamps as needed.
Is this a genuine Mercury part?
Yes. This is an OEM Mercury Marine thermostat assembly.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed cooling system components are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0210477, Mercury 8M0210477, Mercury thermostat assembly, Mercury 500R thermostat, Mercury Racing thermostat, Mercury 500R cooling system, Mercury 500R thermostat replacement, Mercury 500R V8 thermostat, Mercury Racing 500R cooling parts, Mercury Racing cooling system, Mercury thermostat 1E099432, Mercury 500R maintenance, Mercury cooling system service, 888988008, Mercury intake hose clamp, Mercury thermostat housing, Mercury OEM thermostat
