Marine Engine V-Belt for MerCruiser, OMC Cobra and Volvo Penta Sterndrive Applications
Marine Engine V-Belt for MerCruiser, OMC Cobra and Volvo Penta Sterndrive Applications is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Marine Engine V-Belt for MerCruiser, OMC Cobra and Volvo Penta Ster...
Marine Engine V-Belt for MerCruiser, OMC Cobra and Volvo Penta Sterndrive Applications is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket marine engine V-belt is intended for specified MerCruiser, OMC Cobra and Volvo Penta sterndrive applications. Company fitment information identifies the belt for power-steering applications on selected MerCruiser engines and for water-pump, drive-hub and power-steering applications on selected OMC 7.5L V8 engines.
Listed manufacturer and aftermarket references include Mercury Marine 57-33170, 57-33170Q, 57-37619T and 57-34359; Sierra Marine 18-15520; Mallory Marine 9-55001; and OMC or Johnson/Evinrude references including 0509287, 0509288, 0909818, 0912714, 0509311 and 0912418. Reference numbers are provided for identification and cross-reference purposes. Confirm the number and application against your engine documentation before ordering.
- Replacement V-belt for specified marine engine accessory-drive applications.
- Used as a power-steering belt on the listed MerCruiser applications.
- Used for water-pump, drive-hub and power-steering applications on the listed OMC 7.5L V8 applications.
- Sold as one replacement V-belt; no additional hardware is included.
Part Number Matrix
The following references are listed in the product data or supporting aftermarket catalog material. They are not a guarantee that every number applies to every engine shown below.
| Brand | Part Number | Reference Type |
|---|---|---|
| Mercury Marine | 57-33170 | Manufacturer reference |
| Mercury Marine | 57-33170Q | Manufacturer reference |
| Mercury Marine | 57-37619T | Manufacturer reference |
| Mercury Marine | 57-34359 | Manufacturer reference |
| Mercury Marine | 33170, 37619, 37619Q, 37619T | Additional manufacturer references |
| OMC / Johnson-Evinrude | 0509287, 0509288, 0909818, 0912714 | Manufacturer references |
| OMC Cobra | 0509311, 0909818, 0912418, 0912714 | Manufacturer references |
| Sierra Marine | 18-15520 | Aftermarket reference |
| Mallory Marine | 9-55001 | Aftermarket reference |
| Volvo Penta | 952141 | Manufacturer reference for MD1 application |
Engine & Model Compatibility
Compatibility depends on the complete engine model, year and serial-number range. Keep the engine application, year range and reference number together when comparing your original belt. If your exact model is not listed, consult the engine manufacturer’s parts diagram or service manual before ordering.
MerCruiser Applications
The company fitment data lists this V-belt for power-steering applications on the following MerCruiser engines and production ranges:
| Engine / Model | Years | Reference Range | Application Notes |
|---|---|---|---|
| 175 / 185 / 4.3L | 1985–1992 | A331455–D714106 | Power steering |
| 898 / 200 / 5.0L | 1985–1995 | 6218462–F600999 | Power steering |
| 205 | 1985–1991 | A331455–D714369 | Power steering |
| 225 | 1973–1974 | 3385721–4166999 | Power steering |
| 228 / 230 / 5.0L | 1983–1995 | 6218462–F600999 | Power steering |
| 228 / 230 / 5.0L MIE | 1978–1987 | 4929030–B788151 | Power steering |
| 260 / 5.7L | 1983–1995 | 6218462–F600999 | Power steering |
| 350 MAG | 1986–1995 | A635178–F600999 | Power steering |
| 320 EFI | 1987–1989 | A543604–C622418 | Power steering |
OMC Cobra Applications
| Engine / Model | Years | Manufacturer References | Application Notes |
|---|---|---|---|
| 7.5L V8 460 | 1987 | 0509287, 0509288, 0909818, 0912714 | Water pump, drive hub and power steering |
| 7.5L V8 460 King Cobra | 1988 | 0509287, 0509288, 0909818, 0912714 | Water pump, drive hub and power steering |
| V8 305 gasoline | 1977–1984 | 0509311, 0909818, 0912418, 0912714 | OMC Cobra V-belt application |
| V8 350 gasoline | 1977–1984 | 0509311, 0909818, 0912418, 0912714 | OMC Cobra V-belt application |
| V8 454 gasoline | 1977–1982 | 0509311, 0909818, 0912418, 0912714 | OMC Cobra V-belt application |
Volvo Penta Application
| Brand | Model | Manufacturer Reference | Notes |
|---|---|---|---|
| Volvo Penta | MD1 | 952141 | V-belt application |
Technical Specs
- Product Type
- Marine engine V-belt
- Quantity
- One replacement belt
- Primary Listed Use
- Power steering on specified MerCruiser applications
- Additional Listed Uses
- Water pump, drive hub and power steering on specified OMC applications
- Application Style
- Stern-drive / out-drive engine accessory drive
- Manufacturer and Aftermarket References
- Mercury Marine 57-33170, 57-33170Q, 57-37619T and 57-34359; Sierra Marine 18-15520; Mallory Marine 9-55001; selected OMC, Johnson/Evinrude and Volvo Penta references as listed above
What’s in the Box
- 1 x Marine engine V-belt
Installation Notes
- Turn the engine off, allow it to cool and disconnect the battery according to the manufacturer’s safety procedure.
- Confirm the replacement reference, belt routing and accessory application using the engine service manual or routing diagram.
- Relieve belt tension using the procedure and tools specified for your engine. Some applications use an adjustable accessory mount rather than a spring-loaded tensioner.
- Remove the old belt and inspect the pulleys for damage, contamination, misalignment or excessive wear.
- Install the replacement belt in the correct pulley grooves and follow the specified routing.
- Set belt tension according to the engine manufacturer’s specification. Do not rely on a universal flex measurement.
- Rotate the drive by hand where appropriate to confirm that the belt tracks correctly, then run the engine briefly and check for abnormal noise, slipping or misalignment.
Troubleshooting & FAQ
How do I confirm that this V-belt is correct?
Match the complete engine model, year and serial-number range, the belt’s function and the manufacturer reference shown in your service documentation. The compatibility tables identify listed applications, but they do not replace the engine manufacturer’s parts diagram.
What are the signs of a worn or failing V-belt?
Squealing, slipping, glazing, cracking, fraying, visible cord damage and loss of accessory performance can indicate belt or pulley problems. Check for the underlying cause, such as incorrect tension or pulley misalignment, before installing the replacement.
Does this belt fit every MerCruiser or OMC engine?
No. It is listed for the specific MerCruiser, OMC Cobra and Volvo Penta applications shown above. Similar engine displacement alone does not confirm fitment; model, year, serial range, accessory arrangement and belt reference must all agree.
Is this belt used for the alternator, power steering or water pump?
The company data lists power-steering use for the specified MerCruiser applications and water-pump, drive-hub and power-steering use for the specified OMC 7.5L V8 applications. The exact accessory driven by the belt depends on the engine configuration, so verify the routing diagram for your engine.
Is this an OEM belt?
This listing is for an aftermarket replacement belt. The manufacturer and aftermarket reference numbers above are supplied for identification and cross-reference purposes; the belt is not represented as a factory-branded OEM component.
Does the package include pulleys, a tensioner or installation hardware?
No. The package contains one replacement V-belt only. Pulleys, tensioners, brackets and other hardware are not included.
Safety & Important Info
- Verify the belt routing, dimensions and reference number against your original part and engine documentation before installation.
- Do not install the belt if the pulley profile, length or application differs from your original part.
- Inspect the pulleys and accessory mounts before fitting the new belt.
- Follow the engine manufacturer’s tension specification and safety instructions. Professional installation is recommended when the correct procedure is uncertain.
- This is an aftermarket replacement, not a factory-branded OEM component.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for a range of marine engine and sterndrive applications.
- Application-Focused Listings — Product references and fitment information are provided to help you compare your engine documentation.
- Support for Parts Identification — Always use the complete model, year and serial information when confirming a replacement part.
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