Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L (Replaces 3885250, 3587858)
Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L (Replaces 3885250, 3587858) 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).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L (Replaces ...
Product Details
This aftermarket Belt Tensioner is designed for a direct fit on a wide range of Volvo Penta marine engines, including the 4.3L, 5.0L, 5.7L, and 8.1L GL, Gi, GXi, and OSi models. It is also compatible with V6 and V8 series engines, such as the 225, 270, 300, and 320 models.
This part is a direct replacement for Volvo Penta part numbers 3885250, 3587858, 3587859, and 3861010, as well as PCM/Crusader part RA068001.
- Direct OEM replacement for easy installation.
- Constructed with a durable metal housing.
- Covered by a 1-year warranty.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3885250 |
| Volvo Penta | 3587858 |
| Volvo Penta | 3587859 |
| Volvo Penta | 3861010 |
| PCM / Crusader | RA068001 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This tensioner fits a wide range of Volvo Penta engines. Please verify your specific model is listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | 4.3GL-G, 4.3GL-GF, 4.3GL-J, 4.3GL-JF, 4.3GL-P | 4.3L | 4-Stroke | 3885250 | ||
| Volvo Penta | 4.3Gi-200-R, 4.3Gi-G, 4.3GiI-G | 4.3L | 4-Stroke | 3885250 | ||
| Volvo Penta | 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXiE-M, 4.3GXiE-P, 4.3GXiE-Q | 4.3L | 4-Stroke | 3885250 | ||
| Volvo Penta | 4.3GXi-F, 4.3GXi-FF, 4.3GXi-G, 4.3GXi-GF, 4.3GXi-J, 4.3GXi-JF, 4.3GXi-P, 4.3GXi-Q | 4.3L | 4-Stroke | 3885250 | ||
| Volvo Penta | 4.3OSi-E, 4.3OSi-EF, 4.3OSi-F, 4.3OSi-FF, 4.3OSi-G, 4.3OSi-GF, 4.3OSi-J, 4.3OSi-JF | 4.3L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GL-H, 5.0GL-HF, 5.0GL-J, 5.0GL-JF | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GiC-225-S, 5.0GiC-J, 5.0GiC-JF | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GiCE-225-S, 5.0GiCE-J, 5.0GiCE-JF, 5.0GiCE-M, 5.0GiCE-MF | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GXi-270-R, 5.0GXi-F, 5.0GXi-FF, 5.0GXi-G, 5.0GXi-GF, 5.0GXi-J, 5.0GXi-JF, 5.0GXi-N, 5.0GXi-P | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GXiC-270-R, 5.0GXiC-J, 5.0GXiC-JF, 5.0GXiC-P | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GXiCE-270-R, 5.0GXiCE-J, 5.0GXiCE-JF, 5.0GXiCE-M, 5.0GXiCE-MF, 5.0GXiCE-P | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0GXiE-270-R, 5.0GXiE-J, 5.0GXiE-JF, 5.0GXiE-K, 5.0GXiE-KF, 5.0GXiE-M, 5.0GXiE-MF, 5.0GXiE-N, 5.0GXiE-P | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0OSi-F, 5.0OSi-FF, 5.0OSI-G, 5.0OSI-GF, 5.0OSi-J, 5.0OSi-JF | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.0OSiE-J, 5.0OSiE-JF | 5.0L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7Gi-300-J, 5.7Gi-300-JF, 5.7Gi-300-P, 5.7Gi-300-R, 5.7Gi-F, 5.7Gi-FF, 5.7Gi-G, 5.7Gi-GF, 5.7GiI-F, 5.7GiI-G | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GiC-300-J, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7GiC-300-R | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GiCE-300-J, 5.7GiCE-300-JF, 5.7GiCE-300-M, 5.7GiCE-300-MF, 5.7GiCE-300-P, 5.7GiCE-300-R | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GiE-300-J, 5.7GiE-300-JF, 5.7GiE-300-K, 5.7GiE-300-KF, 5.7GiE-300-P, 5.7GiE-300-R | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GXi-320-R, 5.7GXi-F, 5.7GXi-G, 5.7GXi-GF, 5.7GXi-H, 5.7GXi-HF, 5.7GXi-J, 5.7GXi-JF, 5.7GXi-N, 5.7GXi-P | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GXiC-320-R, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiC-P | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GXiCE-320-R, 5.7GXiCE-J, 5.7GXiCE-JF, 5.7GXiCE-M, 5.7GXiCE-MF, 5.7GXiCE-P | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GXiE-320-R, 5.7GXiE-J, 5.7GXiE-JF, 5.7GXiE-P | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7GXiI-G, 5.7GXiI-H | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7OSi-300-J, 5.7OSi-300-JF, 5.7OSi-E, 5.7OSi-EF, 5.7OSi-G, 5.7OSi-GF | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7OSiE-300-J, 5.7OSiE-300-JF | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7OSXi-E, 5.7OSXi-EF, 5.7OSXi-G, 5.7OSXi-GF, 5.7OSXi-J, 5.7OSXi-JF | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 5.7OSXiE-J, 5.7OSXiE-JF | 5.7L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1Gi-E, 8.1Gi-EF, 8.1Gi-F, 8.1Gi-FF, 8.1Gi-G, 8.1Gi-GF, 8.1Gi-H, 8.1Gi-HF, 8.1Gi-J, 8.1Gi-JF | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GiC-400-J, 8.1GiC-400-JF, 8.1GiC-400-Q | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GiCE-J, 8.1GiCE-JF, 8.1GiCE-M, 8.1GiCE-MF, 8.1GiCE-P, 8.1GiCE-Q | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GiE-J, 8.1GiE-JF, 8.1GiE-K, 8.1GiE-KF, 8.1GiE-M, 8.1GiE-MF, 8.1GiE-P | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GiI-E, 8.1GiI-F, 8.1GiI-G, 8.1GiI-H | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GXi-D, 8.1GXi-DF, 8.1GXi-E, 8.1GXi-EF, 8.1GXi-F, 8.1GXi-FF, 8.1GXi-G, 8.1GXi-GF, 8.1GXi-J, 8.1GXi-JF | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GXiE-J, 8.1GXiE-JF, 8.1GXiE-K, 8.1GXiE-KF, 8.1GXiE-P | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1GXiI-D, 8.1GXiI-E, 8.1GXiI-F, 8.1GXiI-G | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1IPSCE-JF, 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-PF, 8.1IPSCE-Q | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1IPSE-JF | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1OSi-A, 8.1OSi-AF, 8.1OSi-B, 8.1OSi-BF, 8.1OSi-C, 8.1OSi-CF, 8.1OSi-D, 8.1OSi-DF, 8.1OSi-J, 8.1OSi-JF | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | 8.1OSiE-J, 8.1OSiE-JF | 8.1L | 4-Stroke | 3885250 | ||
| Volvo Penta | V6-200-A, V6-225-A, V6-225-E-A | V6 | 4-Stroke | 3885250 | ||
| Volvo Penta | V8-225-C-A, V8-225-C-B, V8-225-CE-A, V8-225-CE-B | V8 | 4-Stroke | 3885250 | ||
| Volvo Penta | V8-270-A, V8-270-B, V8-270-C-A, V8-270-C-B, V8-270-CE-A, V8-270-E-A, V8-270-E-B | V8 | 4-Stroke | 3885250 | ||
| Volvo Penta | V8-300-A, V8-300-B, V8-300-C-A, V8-300-C-B, V8-300-CE-A, V8-300-CE-B, V8-300-E-A, V8-300-E-B | V8 | 4-Stroke | 3885250 | ||
| Volvo Penta | V8-320-A, V8-320-B, V8-320-C-A, V8-320-C-B, V8-320-CE-A, V8-320-CE-B, V8-320-E-A, V8-320-E-B | V8 | 4-Stroke | 3885250 |
Technical Specs
- Product Type
- Serpentine Belt Tensioner
- Installation
- Direct OEM replacement
- Housing Material
- Metal
- Weight
- 0.77 kg (1.69 lbs)
- Warranty
- 1 Year
What’s in the Box
- 1 x Belt Tensioner (Replaces 3885250)
Installation Notes
- Disconnect the boat's battery before beginning work.
- Locate the serpentine belt and the old tensioner assembly in the engine bay.
- Use a serpentine belt tool or breaker bar to release tension on the belt, then carefully slide it off the pulleys.
- Unbolt and remove the old tensioner assembly. Note the position of any spacers or washers.
- Install the new tensioner assembly, ensuring it is properly seated. Tighten the mounting bolts to the manufacturer's specified torque.
- Route the serpentine belt according to the diagram for your engine model.
- Apply tension with the new tensioner and slide the belt onto the final pulley.
- Double-check that the belt is correctly aligned in the grooves of all pulleys.
- Reconnect the battery, start the engine, and listen for any unusual noises while checking for proper operation.
Troubleshooting & FAQ
How do I know if my belt tensioner is failing?
Common signs include a persistent squealing, rattling, or grinding noise from the engine bay. You may also notice uneven or premature belt wear, or accessories like the alternator and water pump performing poorly. Visually, a failing tensioner's arm may bounce erratically or sit at an incorrect angle.
Is any special tool required for installation?
A standard socket set and a serpentine belt tool (or a long-handled breaker bar) are typically all that's needed to release the belt tension and replace the unit. Always consult your engine's service manual for specific tool requirements and torque specifications.
What is the recommended replacement interval?
While there is no universally fixed interval for marine engines, it is best practice to inspect the tensioner during routine maintenance or whenever replacing the serpentine belt. Many mechanics recommend replacing the tensioner and belt simultaneously to ensure system reliability.
Will this fit my engine if my model or part number is not listed?
This part is designed as a direct replacement for the part numbers and engine models specified in our compatibility lists. If your part number or engine model is not explicitly listed, we cannot guarantee fitment. Do not purchase if you cannot confirm compatibility.
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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