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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.
814496M
82263M
93210-09156-00
93210-09165-00
93210-09350-00
93210-09729-00
93210-09754-00
93210-09811-00
82233M
83406M
854017
93101-22M00-00
93101-22067-00
69J-81960-11-00
69J-81960-12-00
69J-81960-13-00
6H3-W0001-22-00
87836
9-74504
6BX-14301-12-00
64E-43869-00-00
64E-43869-09-00
6H1-W0093-11-00
7744
8M0175364
8M6010311
Genuine Yamaha OEM XTO Timing Belt Kit
Yamaha XF425 & XF450 XTO Timing Belt with Rotor Bolts - 6GR-W4624-00-00
The Yamaha 6GR-W4624-00-00 Timing Belt Kit is a genuine Yamaha OEM timing-system service part for select XF425 and XF450 XTO Offshore outboards.
This kit is supplied as a timing belt with rotor bolts, making it convenient for major timing-system service on compatible Yamaha XTO engines.
Verified applications include numerous XF425NSA / NSB and XF450NSA / XSA model families, including multiple single-, dual- and multi-engine configuration variants.
OEM Part Number
| Brand / Type | Part Number |
|---|---|
| Yamaha OEM | 6GR-W4624-00-00 |
What is Included
- Yamaha OEM timing belt
- Rotor bolts
Yamaha XTO Fitment
| Engine Family | Verified Applications |
|---|---|
| Yamaha XF425 XTO | XF425NSA, XF425NSA2, XF425NSA7, XF425NSB, XF425NSB2, XF425NSB7 and related configurations. |
| Yamaha XF450 XTO | XF450NSA, XF450NSA2, XF450NSA4, XF450XSA, XF450XSA2 and related configurations. |
Detailed XF425 Model Coverage
- XF425NSA
- XF425NSA_0119
- XF425NSA_0120
- XF425NSA_0418
- XF425NSA2
- XF425NSA2_0119
- XF425NSA2_0120
- XF425NSA2_0418
- XF425NSA7
- XF425NSA7_0119
- XF425NSA7_0120
- XF425NSA7_0418
- XF425NSB
- XF425NSB_0120
- XF425NSB_0121
- XF425NSB_0322
- XF425NSB_0323
- XF425NSB2
- XF425NSB2_0120
- XF425NSB2_0121
- XF425NSB2_0322
- XF425NSB2_0323
- XF425NSB7_0120
- XF425NSB7_0121
- XF425NSB7_0322
Detailed XF450 Model Coverage
- XF450NSA
- XF450NSA_0323
- XF450NSA_0425
- XF450NSA_0524
- XF450NSA_1122
- XF450NSA2
- XF450NSA2_0323
- XF450NSA2_0425
- XF450NSA2_0524
- XF450NSA2_1122
- XF450NSA4
- XF450NSA4_0425
- XF450NSA4_0524
- XF450NSA4_0723
- XF450NSA4_0723_CP
- XF450XSA
- XF450XSA_0323
- XF450XSA_0425
- XF450XSA_0524
- XF450XSA_1122
- XF450XSA2
- XF450XSA2_0323
- XF450XSA2_0425
- XF450XSA2_0524
This timing belt kit is specifically used on select Yamaha XF425 and XF450 XTO Offshore outboards. These engines use different timing-system components than many earlier Yamaha F-series outboards.
Always verify the complete Yamaha engine model before ordering. XF425 and XF450 model suffixes can identify different engine configurations.
Confirm that the application calls for Yamaha 6GR-W4624-00-00.
Matching Yamaha Timing Belt Tensioner
The timing belt tensioner should be inspected whenever the timing belt is serviced. The Yamaha tensioner below is used on select XF425 and XF450 applications covered by this belt kit.
Yamaha OEM Timing Belt Tensioner - 6P2-11590-05-00
Genuine Yamaha OEM timing belt tensioner for compatible Yamaha XF425 and XF450 XTO applications, along with several other Yamaha four-stroke engine families.
If the tensioner shows bearing noise, binding, poor belt control or excessive wear, replace it while the timing system is already apart.
What the Timing Belt Does
The timing belt keeps the crankshaft and camshafts synchronized so the engine's valves operate at the correct point in the combustion cycle. Accurate valve timing is essential for proper engine performance.
On high-output Yamaha XTO engines, the timing system operates under significant load. The belt, tensioner and related timing components should therefore be inspected carefully during scheduled service.
Why Are Rotor Bolts Included?
This Yamaha kit includes the timing belt and rotor bolts required as part of the applicable timing-system service procedure.
Supplying the bolts together with the belt helps ensure the correct service hardware is available when the timing assembly is disassembled.
Common Signs the Timing System Needs Service
- Timing belt has reached its scheduled service interval
- Visible cracking or deterioration
- Frayed or damaged belt edges
- Missing or damaged belt teeth
- Oil or fluid contamination on the belt
- Abnormal noise from the timing-system area
- Loose or inconsistent belt tension
- Worn or noisy timing belt tensioner
Why Inspect the Tensioner During Belt Replacement?
A new timing belt depends on the tensioner to maintain proper belt control. A worn tensioner can allow excessive movement, incorrect tension or premature belt wear.
Whenever replacing the 6GR-W4624-00-00 timing belt, inspect the Yamaha 6P2-11590-05-00 tensioner and related timing components before reassembly.
Key Features and Benefits
- Genuine Yamaha OEM timing belt kit
- Yamaha part number 6GR-W4624-00-00
- Includes timing belt and rotor bolts
- Fits select Yamaha XF425 XTO outboards
- Fits select Yamaha XF450 XTO outboards
- Extensive XF425 NSA / NSB application coverage
- Extensive XF450 NSA / XSA application coverage
- Supports proper crankshaft and camshaft synchronization
- Matching Yamaha timing belt tensioner linked above
FAQ
What comes with Yamaha 6GR-W4624-00-00?
The kit includes the timing belt and rotor bolts.
Does 6GR-W4624-00-00 fit Yamaha XF425 XTO?
Yes. Verified fitment includes numerous XF425NSA, XF425NSA2,
XF425NSA7, XF425NSB, XF425NSB2 and XF425NSB7 configurations.
Does it fit Yamaha XF450 XTO?
Yes. Verified applications include numerous XF450NSA, XF450NSA2,
XF450NSA4, XF450XSA and XF450XSA2 model families.
Is this a genuine Yamaha timing belt?
Yes. This listing is for the genuine Yamaha OEM belt kit.
Does this kit include the tensioner?
No. The timing belt tensioner is sold separately. The compatible
6P2-11590-05-00 Yamaha OEM tensioner is linked above.
What tensioner is used with this belt?
Select XF425 and XF450 applications use Yamaha
6P2-11590-05-00, which is linked above.
Should I replace the tensioner when changing the timing belt?
Inspect it carefully whenever the belt is replaced. Replace the tensioner
if there is bearing noise, roughness, binding, excessive play or improper
belt tension.
How do I confirm fitment?
Match your complete Yamaha XF425 or XF450 model number to the application
list and confirm that Yamaha specifies 6GR-W4624-00-00
for the timing belt kit.
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
6GR-W4624-00-00, Yamaha 6GR-W4624-00-00, Yamaha XTO timing belt, Yamaha XTO timing belt kit, Yamaha timing belt with rotor bolts, Yamaha XF425 timing belt, Yamaha 425 XTO timing belt, XF425NSA timing belt, XF425NSA2 timing belt, XF425NSA7 timing belt, XF425NSB timing belt, XF425NSB2 timing belt, XF425NSB7 timing belt, Yamaha XF450 timing belt, Yamaha 450 XTO timing belt, XF450NSA timing belt, XF450NSA2 timing belt, XF450NSA4 timing belt, XF450XSA timing belt, XF450XSA2 timing belt, Yamaha rotor bolts, XTO rotor bolts, Yamaha timing system, 6P2-11590-05-00, Yamaha XTO timing belt tensioner
OEM Mercury EFI Oil Pump
Mercury 2.5L / 3.0L EFI Oil Pump Assembly
This OEM Mercury oil pump assembly fits select Mercury and Mariner 150HP-250HP EFI outboards along with compatible 240 EFI SportJet applications.
Mercury part number 8M0185615 supersedes several earlier EFI oil pump assemblies and is used on multiple Mercury 2.5L and 3.0L EFI powerhead platforms.
Compatible Applications
| Horsepower / Model | Engine Family | Engine Type | Application Notes |
|---|---|---|---|
| 150 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select serial-number applications |
| 175 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select EFI powerhead applications |
| 200 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select high-performance EFI models |
| 200 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select 3.0L EFI applications |
| 225 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select offshore and EFI applications |
| 250 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select 3.0L EFI applications |
| 225X EFI Pro Max | Mercury Racing 3.0L | High Performance EFI | Select Pro Max applications |
| SeaPro / Marathon | Mercury 3.0L | Commercial EFI | Select commercial-duty applications |
| 240 EFI / 240 EFI M2 | Mercury SportJet | EFI Jet Drive | Select SportJet powerhead applications |
Always verify your engine serial number before ordering internal engine lubrication components.
OEM Part Numbers & Supersessions
| Type | Part Number |
|---|---|
| Current Mercury OEM Number | 8M0185615 |
| Mercury Supersession | 8M0128081 |
| Mercury Supersession | 8M0101630 |
| Mercury Supersession | 879892T |
| Mercury Supersession | 879892T03 |
| Mercury Supersession | 879892T04 |
| Mercury Supersession | 879892T05 |
What This Oil Pump is Used For
This Mercury EFI oil pump circulates engine oil throughout the powerhead to lubricate crankshaft bearings, rods, pistons, internal rotating assemblies, and other critical engine components.
Proper oil pressure and oil flow are essential for protecting Mercury EFI 2-stroke engines from premature wear and engine damage.
Oil pump wear, contamination, internal scoring, or oil pressure problems can contribute to serious powerhead damage if not repaired promptly.
Oil pumps are commonly replaced during complete engine rebuilds, oil-pressure diagnosis, or major EFI powerhead repair work.
Key Features and Benefits
- OEM Mercury EFI oil pump assembly
- Fits select Mercury and Mariner 2.5L and 3.0L EFI outboards
- Compatible with 240 EFI SportJet applications
- Replaces multiple earlier Mercury oil pump assemblies
- Supports proper engine oil pressure and lubrication
- Critical internal engine lubrication component
- OEM Mercury fit and compatibility
- Common replacement during powerhead rebuild service
Oil Pump Details
- Brand: Mercury Marine
- Part Number: 8M0185615
- OEM Supersessions: 8M0101630, 8M0128081, 879892T, 879892T03, 879892T04, 879892T05
- Applications: Mercury / Mariner EFI 2-Stroke Outboards
- Compatible Engines: 2.5L & 3.0L EFI Platforms
- Compatible Models: EFI, Pro Max, SportJet, SeaPro, Marathon
- System: Engine Lubrication System
- Use: Engine oil circulation and oil pressure supply
FAQ
What engines does this oil pump fit?
This oil pump fits select Mercury and Mariner 150HP-250HP EFI 2-stroke outboards and 240 EFI SportJet models using the listed OEM numbers.
What OEM numbers does this replace?
This pump replaces Mercury part numbers 8M0101630, 8M0128081, 879892T, 879892T03, 879892T04, and 879892T05.
What does an oil pump do?
The oil pump circulates engine oil throughout the engine to lubricate and protect internal moving components.
What are symptoms of a failing oil pump?
Low oil pressure, internal engine noise, warning alarms, or poor lubrication can indicate oil pump problems.
Should engine serial number be verified before ordering?
Yes. Mercury used multiple oil pump variations depending on engine family 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.
- Internal engine lubrication components should be installed only by qualified technicians.
- 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
8M0185615, 8M0128081, 8M0101630, 879892T, 879892T03, 879892T04, 879892T05, Mercury oil pump, Mercury EFI oil pump, Mercury 2.5L oil pump, Mercury 3.0L oil pump, Mercury SportJet oil pump, Mercury Pro Max oil pump, Mercury SeaPro oil pump, Mercury Marathon oil pump, OEM Mercury oil pump
8M0128081
8M0185615
879892T
879892T03
879892T04
879892T05
5034594