Marine V-Belt for Volvo Penta AQ Series and OMC Cobra 165C/165S, 215 & 888
Marine V-Belt for Volvo Penta AQ Series and OMC Cobra 165C/165S, 215 & 888 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Marine V-Belt for Volvo Penta AQ Series and OMC Cobra 165C/165S, 21...
Marine V-Belt for Volvo Penta AQ Series and OMC Cobra 165C/165S, 215 & 888 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket marine V-belt is supplied as one belt for selected Volvo Penta stern-drive and out-drive applications, OMC Cobra applications, and MerCruiser applications. It is intended for belt-driven engine accessories such as the water pump and alternator where the listed belt reference and configuration match.
This belt is for Volvo Penta AQ131A, AQ131B, AQ131C, AQ131D, AQ145B, AQ151A, AQ151B, AQ151C, AQ171A, AQ171C, 230A, 250, and 251 models. OMC applications include 165C, 165S, 215 V-8 with the 302 Ford gasoline engine, and 888 V-8 with the 427 engine.
- Single marine V-belt.
- For selected stern-drive and out-drive accessory-drive applications.
- Verify the belt reference, dimensions, routing, and engine configuration before ordering.
Part Number References
Use the references below to compare the belt with the part being replaced. A number appearing in this table does not replace the need to confirm the complete engine configuration.
| Brand or source | Reference number |
|---|---|
| Volvo Penta | 966978, 966382, 841821 |
| Sierra Marine | 18-15435, 18-15430 |
| Evinrude / Johnson / OMC | 912509 |
| Volvo Penta | 958314, 958359 |
| MerCruiser | 49211, 57-49211, 57-64416, 64416, 44206, 57-44206 |
Engine & Model Compatibility
Compatibility is configuration-dependent. Confirm the model designation, accessory arrangement, belt routing, and original belt reference before installation.
| Brand | Model or application | Application notes | Listed references |
|---|---|---|---|
| Volvo Penta | AQ131A, AQ131B, AQ131C, AQ131D | Selected stern-drive / out-drive applications | 966978, 966382, 841821 |
| Volvo Penta | AQ145B | Selected stern-drive / out-drive application | 966978, 966382, 841821 |
| Volvo Penta | AQ151A, AQ151B, AQ151C | Selected stern-drive / out-drive applications | 966978, 966382, 841821 |
| Volvo Penta | AQ171A, AQ171C | Selected stern-drive / out-drive applications | 966978, 966382, 841821 |
| Volvo Penta | 230A, 250, 251 | Selected stern-drive / out-drive applications | 966978, 966382, 841821 |
| OMC Cobra | 165C, 165S | 43-3/4-inch application; belt drives the water pump and alternator | 912509 |
| OMC Cobra | 215 V-8 with 302 Ford gasoline engine | Belt drives the water pump and alternator | 912509 |
| OMC Cobra | 888 V-8 with 427 engine | Belt drives the water pump and alternator | 912509 |
| MerCruiser | Selected applications | Confirm the complete engine and accessory configuration; no specific model fitment is listed | 49211, 57-49211, 57-64416, 64416, 44206, 57-44206 |
Technical Information
- Product type
- Marine V-belt
- Quantity
- 1 belt
- Typical function
- Accessory drive for applications using the water pump and alternator belt arrangement listed above
- Application
- Selected Volvo Penta, OMC Cobra, and MerCruiser stern-drive or out-drive systems
- UPC
- 808282257606
What’s in the Box
- 1 x marine V-belt
Installation Notes
- Safety first: Switch off the engine, disconnect the battery, and allow the engine to cool before beginning work.
- Confirm the routing: Photograph or document the original belt path before removal.
- Release tension: Loosen the appropriate alternator or adjustment hardware so the old belt can be removed without forcing it over the pulleys.
- Inspect the drive system: Check pulley grooves, alignment, bearings, and the adjustment mechanism for wear, contamination, looseness, or damage.
- Install the belt: Route the new belt exactly as specified for the engine and accessory configuration. Do not pry the belt onto the pulleys with a sharp tool.
- Set tension: Adjust the belt according to the engine manufacturer’s service instructions. Do not rely on a generic deflection value when a model-specific specification is available.
- Final check: Tighten all mounting and adjustment hardware, rotate the system by hand where appropriate, and confirm that the belt tracks centrally in each pulley.
- Test operation: Reconnect the battery, run the engine briefly, and check for tracking problems, squealing, abnormal vibration, or overheating.
Maintenance & Troubleshooting
How do I confirm that this is the correct belt?
Compare the reference number on the old belt with the numbers listed above, then confirm the exact engine model, accessory arrangement, belt routing, and belt length. The OMC 165C and 165S application is specifically listed as 43-3/4 inches, but other configurations should be verified independently.
What are common signs of belt wear?
Inspect for cracking, glazing, fraying, contamination, missing material, abnormal wear on the belt sides, or a belt that no longer sits correctly in the pulley groove. Squealing, slipping, charging problems, or accessory-drive overheating can also indicate incorrect tension, misalignment, or belt wear.
Should I replace the belt if the pulleys are damaged?
Resolve pulley damage, misalignment, seized bearings, or adjustment problems before fitting a replacement belt. These conditions can quickly damage a new belt.
Is this a single belt or a set?
This listing is for one single V-belt, not a multi-belt set.
Is this an OEM belt?
This is an aftermarket replacement belt. The manufacturer references listed on this page are provided for identification and fitment comparison only.
Important Fitment Information
- Use the complete engine model and accessory configuration when checking compatibility.
- Do not select a belt solely because one reference number appears similar; belt length, profile, routing, and pulley arrangement must also match.
- Stop installation if the replacement belt differs from the original belt or does not seat correctly in the pulley grooves.
- Professional installation is recommended when the correct belt tension or routing cannot be confirmed.
About Sea Sierra
- Marine replacement parts — We provide aftermarket parts for marine maintenance and repair applications.
- Application-focused information — Use the listed references and model details to compare your original part before ordering.
- Support for fitment checks — When your engine configuration is not listed, consult the engine service information or a qualified marine technician.
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