S2K Commerce - Products Dropdown
S2K Commerce - Order Entry
Outboard Motor Parts | OEM & Aftermarket
Shop OEM and aftermarket outboard motor parts for Mercury, Yamaha, Suzuki, Honda, Johnson / Evinrude / E-TEC, Tohatsu / Nissan, and Chrysler / Force engines. Pro Marine USA carries parts for routine maintenance, troubleshooting, repair, and complete marine engine rebuilds.
Browse by outboard manufacturer or engine system, or use our OEM parts lookup to identify the correct part number before ordering. Find cooling, fuel, ignition, electrical, internal engine, lower unit, steering, trim, service kit, gasket, seal, and rebuild parts in one place.
Shop Outboard Parts by Manufacturer
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair
Honda Outboard Honda cooling, fuel, electrical, and engine parts
Johnson / Evinrude / E-TEC Outboard Johnson, Evinrude, E-TEC, and OMC replacement parts
Mercury Outboard Mercury and Mariner maintenance, repair, and rebuild parts
Suzuki Outboard Suzuki service, lower unit, fuel, and engine parts
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts
Yamaha Outboard Yamaha maintenance, repair, lower unit, and rebuild parts Find the Correct Outboard Part
Not sure which part fits your engine? Start with the engine manufacturer, horsepower, model number, serial number, and year whenever available.
Our OEM parts lookup lets you view factory parts diagrams and identify the original part number for many popular outboard engines. Once you have the OEM number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Shop Outboard Parts by Engine System
Outboard engines use several interconnected systems. Select your manufacturer above to browse the exact categories available for your engine, including the following common repair and maintenance areas.
Common Outboard Problems and Where to Start
- Engine overheating: inspect the water pump, impeller, thermostat, pressure-control components, cooling passages, and engine anodes.
- Hard starting or rough idle: check fuel delivery, carburetor or injector operation, spark plugs, ignition components, filters, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes or ignition modules, sensors, wiring, grounds, and related electrical components.
- Low compression or poor power: inspect pistons, rings, cylinder condition, head and powerhead gaskets, bearings, and other internal engine components.
- Milky gear lube: inspect prop shaft, driveshaft, shift shaft, bearing carrier, and other lower unit seals for water intrusion.
- Lower unit or gearcase noise: inspect bearings, gears, clutch components, shafts, and gear lube condition before continued operation.
- Trim or steering problems: inspect hydraulic fluid level, seals, hoses, trim motors, pumps, steering cylinders, and mechanical connections.
Why Buy Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for major outboard engine brands.
- Marine engine parts for routine maintenance, professional repair, and complete rebuild projects.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of service kits, engine parts, lower unit components, fuel system parts, electrical parts, steering, and rigging products.
- Same-day weekday shipping available on qualifying in-stock orders placed before the shipping cutoff.
OEM and Aftermarket Outboard Parts
OEM parts are supplied by the original engine manufacturer and are designed for the specific engine application. Aftermarket parts are replacement components produced by independent marine parts manufacturers and may provide additional availability or value for many common repairs.
Pro Marine carries both genuine OEM parts and quality aftermarket replacement parts for many outboard maintenance, repair, and rebuild applications. Always confirm fitment using the engine model, serial number, horsepower, year range, or OEM part number when available.
Frequently Asked Questions
How do I find the correct parts for my outboard motor?
Start by identifying the engine manufacturer, horsepower, model number, serial number, and year. Select the manufacturer above to browse by engine system, or use the OEM parts lookup to locate the original part number from a factory diagram.
Can I search Pro Marine by OEM part number?
Yes. If you already have the OEM part number, enter it 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.
What information should I have before ordering an outboard part?
Have the engine manufacturer, horsepower, model number, serial number, and year whenever possible. An OEM part number from the original component or parts diagram is especially helpful because visually similar parts may fit different engine families.
What is the difference between OEM and aftermarket outboard parts?
OEM parts come from the original engine manufacturer. Aftermarket parts are replacement components manufactured by other marine parts companies for compatible applications. Pro Marine carries both OEM and aftermarket options across many common outboard engine systems.
Are aftermarket outboard motor parts reliable?
Quality aftermarket marine parts are commonly used for maintenance, professional repair, and engine rebuilding. The best option depends on the application, manufacturer, availability, and customer preference.
Do you carry parts for older outboard motors?
Yes. Pro Marine carries parts for many older Mercury, Mariner, Johnson, Evinrude, Chrysler, Force, Yamaha, Honda, Suzuki, Nissan, and Tohatsu outboards. Availability varies by engine family and component.
What outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump impellers, complete water pump kits, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Outboard parts can vary by model, serial range, horsepower, and production year. Confirm the OEM part number or engine identification information whenever possible before ordering.
66T-W0078-00-00
66T-W0078-01-00
6H4-W0093-03-00
6H4-W0093-04-00
8M0175366
8M6010313
5037176
61N-W0078-11-00
61N-W0078-13-00
61N-W0078-14-00
Mercury 450R V8 Replacement Belt
Mercury 8M0159595 Belt
The Mercury 8M0159595 Belt is a replacement belt for compatible Mercury 450R V8 belt drive systems. A worn or damaged belt can cause squealing, slipping, charging issues, overheating concerns, or poor accessory drive performance.
When replacing this belt, inspect the belt tensioner and pulley assembly at the same time. The related Mercury 8M0164060 tensioner assembly is linked below.
Compatible Applications
| Engine / Application | Part Number |
|---|---|
| Mercury 450R V8 belt drive system | 8M0159595 |
Verify your engine serial number and original belt part number before ordering. Mercury belt lengths and belt drive components can vary by model and serial range.
OEM & Cross Reference Numbers
| Type | Part Number |
|---|---|
| Mercury OEM | 8M0159595 |
Related Tensioner Assembly
Mercury 8M0164060 Tensioner Assembly
If the belt is worn, slipping, squealing, or tracking incorrectly, inspect the tensioner assembly as well. A weak or noisy tensioner can shorten belt life and cause repeat belt problems.
What This Part is Used For
The engine belt transfers power through the belt drive system to related engine accessories. Proper belt condition is important for quiet operation, correct pulley tracking, and dependable accessory drive performance.
A belt should be replaced if it shows cracks, glazing, fraying, uneven wear, contamination, slipping, or noise. Because the belt works directly with the tensioner and pulleys, those parts should be inspected during the same service.
Key Features and Benefits
- Mercury OEM replacement belt
- Part number 8M0159595
- Used on compatible Mercury 450R V8 belt drive systems
- Helps restore proper belt drive operation
- Recommended replacement when the belt is cracked, glazed, noisy, or slipping
- Related Mercury 8M0164060 tensioner assembly linked above
- Good service practice is to inspect the belt, tensioner, and pulleys together
Common Signs of Belt Wear
| Symptom | What to Check |
|---|---|
| Squealing or chirping | Worn belt, weak tensioner, pulley alignment, or contamination |
| Cracks or fraying | Replace the belt and inspect pulley surfaces |
| Glazed belt surface | Slipping belt, weak tensioner, or worn pulley contact |
| Uneven belt wear | Misalignment, tensioner wear, or pulley damage |
| Repeat belt failure | Inspect tensioner assembly and pulley system before installing another belt |
FAQ
What is the OEM number for this belt?
The OEM part number is 8M0159595.
What engine is this belt commonly used on?
This belt is listed for compatible Mercury 450R V8 belt drive systems.
Should I replace the tensioner when replacing the belt?
Not always, but the tensioner should be inspected during belt service. If the
tensioner is weak, noisy, binding, or the pulley is worn, replace it with the
related 8M0164060 tensioner assembly.
Can a bad tensioner damage a new belt?
Yes. A weak, worn, or misaligned tensioner can cause slipping, noise, uneven
wear, and premature belt failure.
When should this belt be replaced?
Replace the belt if it is cracked, frayed, glazed, contaminated, slipping,
noisy, or showing uneven wear.
Do I need to verify fitment?
Yes. Always verify your engine serial number and original belt part number
before ordering.
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 Terms
8M0159595, Mercury 8M0159595, Mercury belt, Mercury 450R belt, Mercury 450R V8 belt, Mercury Racing 450R belt, Mercury outboard belt, Mercury replacement belt, Mercury belt drive, outboard engine belt, belt squeal Mercury outboard, Mercury belt replacement, Mercury pulley belt, 8M0164060, Mercury 8M0164060, Mercury tensioner assembly, Mercury 450R tensioner, belt and tensioner replacement
93101-20008-00
93101-20048-00
93101-20107-00
93103-20002-00
93103-20048-00
18-3482
6CE-44311-00-00
6CE-44311-01-00
63P-24410-10-00
63P-24410-20-00
94148
689-W0001-C2-00
689-W0001-22-00