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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury Outboard Parts by System
- Complete Powerheads
- Control Cables & Boxes
- Cooling System
- Cowlings & Components
- Electrical System
- Engine Oil
- Engine Rebuild Kits
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service & Oil Change Kits
- Service Manuals
- Steering Systems
- Throttle Components
- Transom & Midsection
- Trim System
- Wizard Performance Parts
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
Sierra Mercury Carburetor Float
Replacement WME Carb Float for Mercury & Mariner 2-Stroke Outboards
This Sierra 18-72000 carburetor float replaces Mercury / Quicksilver OEM part number 1395-9594.
The float is used inside compatible Mercury and Mariner WME carburetors to regulate fuel level within the carburetor bowl for proper fuel metering and dependable engine performance.
Compatible Applications
| Engine Range | Engine Type | Carburetor Family | Application Notes |
|---|---|---|---|
| Mercury / Mariner 30HP-40HP | 2-Stroke | WME Carburetors | Select 2-cylinder carbureted models using float 1395-9594 |
| Mercury / Mariner 50HP-75HP | 2-Stroke | WME Carburetors | Select 3-cylinder carburetor assemblies using compatible WME carburetors |
| Mercury / Mariner 80HP-125HP | 2-Stroke | WME Carburetors | Select 3-cylinder and 4-cylinder carbureted applications |
| Mercury XR / Sea Pro Models | 2-Stroke | WME Carburetors | Used in select commercial and performance carbureted outboards |
A damaged or fuel-soaked float may cause flooding, rich-running conditions, fuel leakage, hard starting, poor idle quality, or hesitation during acceleration.
Mercury used several WME carburetor variations across the 30HP-125HP range. Always verify your engine serial number and carburetor number before ordering carburetor components.
OEM Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| Sierra | 18-72000 |
| Mercury / Quicksilver OEM | 1395-9594 |
| Alternate Search Format | 13959594 |
OEM Mercury Float Option
Looking for the OEM Mercury / Quicksilver carburetor float?
See the OEM Mercury 1395-9594 Carburetor Float .
Related Carburetor Repair Kit
This carburetor float is commonly used with the following carburetor rebuild kit:
Sierra 7211-1 Carburetor Kit with Needle
What a Carburetor Float Does
The carburetor float works together with the needle and seat assembly to maintain proper fuel level inside the carburetor bowl.
Maintaining the correct fuel level helps provide stable idle, clean throttle response, proper fuel delivery, and reliable engine operation.
Over time, carburetor floats may absorb fuel, crack, stick, or lose buoyancy, causing flooding or inconsistent fuel delivery.
Replacing worn carburetor floats during carburetor rebuild service helps restore reliable fuel system performance.
Features and Benefits
- Sierra aftermarket carburetor float
- Replaces Mercury / Quicksilver OEM 1395-9594
- Fits select Mercury and Mariner 30-125HP 2-stroke outboards
- Compatible with many WME carburetor applications
- Helps maintain proper carburetor fuel level
- Useful for flooding and fuel delivery repairs
- Common replacement during carburetor rebuild service
- Aftermarket alternative to OEM Mercury carburetor floats
Carburetor Float Details
- Brand: Sierra
- Part Number: 18-72000
- Part Type: Carburetor Float
- Replaces OEM: Mercury 1395-9594
- Application: Mercury / Mariner 2-Stroke Carburetors
- Horsepower Range: 30HP-125HP
- Carburetor Family: WME
- System: Fuel / Carburetor
- Quantity Sold: Each
FAQ
What does Sierra 18-72000 replace?
This float replaces Mercury / Quicksilver OEM carburetor float 1395-9594.
What outboards use this carburetor float?
This float fits select Mercury and Mariner carbureted 2-stroke outboards from approximately 30HP through 125HP.
What carburetors use this float?
It is commonly used in compatible WME carburetor applications.
What happens if a carburetor float fails?
A damaged float may cause flooding, fuel leakage, poor idle quality, rich-running conditions, or hard starting.
Is this the same float used in the Sierra carburetor kit?
Yes. This float is commonly associated with the Sierra 7211-1 carburetor repair kit with needle.
Should I verify the carburetor model before ordering?
Yes. Mercury used several WME carburetor variations across these horsepower ranges, so carburetor number verification is recommended.
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.
- Fuel 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
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