Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6 & V8 Engines (Replaces 3817287, 3889124)
Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6 & V8 Engines (Replaces 3817287, 3889124) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6 & V8 Eng...
Product Details
This high-quality aftermarket Serpentine Belt is designed for a precise fit on Volvo Penta 4.3L V6, 5.0L V8, and 5.7L V8 marine engines. It is compatible with various models that use a serpentine belt system, including the popular GL, GXi, and OSi series, ensuring reliable performance for your boat's engine.
This belt serves as a direct replacement for Volvo Penta part numbers 3817287 and 3889124, as well as JLM Marine 23BL260, providing a reliable interchange for maintenance and repairs.
- Drives the engine's alternator and water pump.
- Fits engine-mounted serpentine belt systems.
- Constructed from durable rubber with fiber reinforcement for longevity.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 3817287 | Superseded by 3889124 |
| Volvo Penta | 3889124 | |
| JLM Marine | 23BL260 | Aftermarket Replacement |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This belt is confirmed to fit the following Volvo Penta engine models. Please verify your specific model is listed.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Volvo Penta | 4.3GL-G | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 4.3GL-GF | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 4.3GXi-G | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 4.3GXi-GF | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 4.3OSi-G | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 4.3OSi-GF | 4.3L V6 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.0GL-H | 5.0L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.0GL-HF | 5.0L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.0GXi | 5.0L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.7Gi | 5.7L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.7GXi | 5.7L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
| Volvo Penta | 5.7OSi | 5.7L V8 | 4-Stroke | 3889124 | Supersedes 3817287 |
Technical Specs
- Product Type
- Serpentine Belt
- Installation
- Engine-mounted serpentine belt system
- Fuel Type
- Gasoline
- Housing Material
- Rubber with fiber reinforcement
- Other Technical Attributes
- Alternator and water pump drive belt
- Warranty
- 1-year against manufacturing defects (JLM Marine)
What’s in the Box
- 1 x Serpentine Belt (3889124/3817287)
Installation Notes
- Disconnect the battery's negative terminal for safety.
- Locate the belt tensioner and use a wrench or breaker bar to release the tension on the old belt.
- Carefully slide the old belt off the pulleys. It's helpful to sketch or photograph the belt's routing path first.
- Inspect all pulleys for wobble, damage, or seizure. Clean any grime from pulley grooves.
- Route the new belt according to the manufacturer's diagram, starting with the crankshaft pulley.
- Ensure the belt's ribs are correctly seated in all pulley grooves.
- Apply tension back onto the belt system using the tensioner.
- Double-check the belt's alignment and tension.
- Reconnect the battery, start the engine, and listen for any unusual noises.
Troubleshooting & FAQ
How can I confirm this belt fits my specific engine model?
Your primary reference should be the Engine & Model Compatibility table on this page. Compare your engine's model designation against the list. If you are still unsure, check your engine’s service manual for the correct OEM part number and cross-reference it with our Part Number Matrix.
What are common signs of a failing serpentine belt?
Look for visible signs of wear such as cracking, glazing (shiny surface), fraying edges, or chunking (missing pieces). Audible symptoms often include a high-pitched squealing or chirping noise from the engine bay, especially during startup or when accelerating.
How often should I replace my serpentine belt?
There is no fixed interval, as it depends on engine hours, operating conditions, and climate. We recommend inspecting the belt during every routine service. Most marine mechanics suggest replacement every 3-5 years or after a certain number of hours, whichever comes first, to prevent unexpected failure on the water.
What does it mean that part number 3889124 "supersedes" 3817287?
It means that 3889124 is the newer, updated version of the part from the manufacturer. It is fully compatible and serves as the current replacement for the older part number 3817287. Our belt is a direct replacement for both of these OEM numbers.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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