Marine V-Belt for Volvo Penta 4.3 GL/GS and OMC Cobra Stern Drives – Replaces 3852504, 0778031, 0910371
Marine V-Belt for Volvo Penta 4.3 GL/GS and OMC Cobra Stern Drives – Replaces 3852504, 0778031, 0910371 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.
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Marine V-Belt for Volvo Penta 4.3 GL/GS and OMC Cobra Stern Drives ...
Marine V-Belt for Volvo Penta 4.3 GL/GS and OMC Cobra Stern Drives – Replaces 3852504, 0778031, 0910371 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket marine V-belt is intended for specified Volvo Penta and OMC stern-drive applications. The company fitment information identifies it for Volvo Penta 4.3 GL and 4.3 GS engines, including the listed 4.3GL-J/JF, GXI-J/JF, and OSI-J/JF variants, as well as OMC Cobra stern/out-drive applications.
Customer-facing reference numbers for this belt include 3852504, 0778031, and 0910371. These numbers are provided for cross-reference only; confirm the exact engine model and existing belt reference before ordering.
- Marine V-belt for selected Volvo Penta and OMC stern-drive applications.
- Designed as a replacement belt for the specified engine configuration.
- Installation requires correct routing and belt tension adjustment for the individual engine.
Part Number Matrix
Use the references below to compare the belt with your existing part and engine documentation. A number match should be confirmed together with the engine model and variant.
| Reference Type | Part Number | Notes |
|---|---|---|
| OEM Reference | 3852504 | Reference listed for this belt |
| OEM Reference | 0778031 | Reference listed for this belt |
| OEM Reference | 0910371 | Reference listed for this belt |
| Aftermarket Cross-Reference | RM3852504 | Cross-reference shown in supplementary aftermarket catalog data; verify application before purchase |
Engine & Model Compatibility
The company fitment record identifies this belt for Volvo Penta stern/out-drive applications and OMC Cobra stern/out-drive applications. Confirm the exact engine variant before ordering.
| Brand / Drive Type | Engine or Variant | Application | Reference Numbers | Fitment Notes |
|---|---|---|---|---|
| Volvo Penta stern/out-drive | 4.3 GL | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed application |
| Volvo Penta stern/out-drive | 4.3 GS | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed application |
| Volvo Penta stern/out-drive | 4.3GL-J / 4.3GL-JF | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed variant |
| Volvo Penta stern/out-drive | GXI-J / GXI-JF | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed variant |
| Volvo Penta stern/out-drive | OSI-J / OSI-JF | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed variant |
| OMC Cobra stern/out-drive | Exact model and variant to be confirmed | Marine V-belt | 3852504, 0778031, 0910371 | Company-listed drive family; verify the specific engine configuration |
Technical Specs
- Product Type
- Marine V-belt
- Application
- Selected Volvo Penta and OMC Cobra stern/out-drive applications
- Confirmed Volvo Penta Fitment
- 4.3 GL, 4.3 GS, 4.3GL-J/JF, GXI-J/JF, and OSI-J/JF
- Material
- Not specified in the company product record
- Dimensions
- Not specified in the company product record
- Color
- Not specified in the company product record
- Warranty
- Refer to the seller's current warranty terms
What’s in the Box
- 1 x Marine V-belt
Installation Notes
- Switch off the engine, remove the ignition key, and disconnect the battery according to the manufacturer's safety procedure.
- Identify the belt routing and take a photograph before removing the old belt.
- Release the applicable adjustment or mounting hardware so the old belt can be removed without forcing it over the pulleys.
- Inspect the pulleys for damage, contamination, or abnormal wear before installation.
- Install the replacement belt in the correct routing path and ensure it is fully seated in each pulley groove.
- Adjust the belt tension according to the engine manufacturer's service instructions. Do not rely on a universal deflection measurement.
- Tighten the mounting and adjustment hardware to the manufacturer's specified procedure.
- Reconnect the battery, run the engine briefly in accordance with the service manual, and check belt tracking and unusual noise.
Troubleshooting & FAQ
How do I confirm that this belt is correct for my engine?
Compare your existing belt reference and confirm the complete engine model and variant. The company-listed Volvo Penta applications include 4.3 GL, 4.3 GS, 4.3GL-J/JF, GXI-J/JF, and OSI-J/JF. OMC Cobra applications should be checked against the exact engine configuration before purchase.
What do the numbers 3852504, 0778031, and 0910371 mean?
They are customer-facing OEM reference numbers listed for this belt. Use them for cross-reference together with the engine model; a number alone does not confirm every possible application.
What are common signs of belt wear?
Inspect for cracking, fraying, glazing, hardening, contamination, unusual noise, or visible tracking problems. Replace the belt if it is damaged or cannot be tensioned correctly.
Does this belt fit every Volvo Penta or OMC engine?
No. The confirmed company fitment is limited to the listed Volvo Penta 4.3 applications and the OMC Cobra stern/out-drive family. Other engine sizes, years, or variants are not confirmed by the supplied company record.
Is this an OEM or aftermarket part?
This listing is for an aftermarket replacement belt. It is not sold as a branded original-equipment component.
What are the shipping speed and cost?
Available shipping methods, delivery estimates, and costs are shown at checkout based on the destination.
What is the warranty and return policy?
Warranty coverage and return eligibility are subject to the seller's current terms. Contact support before installation if the belt does not match the confirmed application.
Safety & Important Info
- Verify the complete engine model, variant, existing belt reference, and physical belt routing before ordering.
- Do not use this listing to assume fitment for unlisted engine sizes, years, or variants.
- Never work on a moving engine. Follow the engine manufacturer's service and tensioning instructions.
- This is an aftermarket replacement component, not an original-equipment manufacturer component.
About Sea Sierra
- Marine Parts Support — We provide application information to help customers compare replacement parts with their engine configuration.
- Global Fulfillment — Available shipping options and delivery estimates are provided at checkout.
- Application-Focused Service — Confirm the model and reference details with our support team before ordering when your application is not listed.
Payment & Security
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