Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L, and PCM (Replaces 3885250, 3587858, RA068001)
Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L, and PCM (Replaces 3885250, 3587858, RA068001) 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
Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L, and PCM (...
Product Details
This aftermarket Belt Tensioner – Fits Volvo Penta 4.3L, 5.0L, 5.7L, 8.1L Marine Engines is designed for a broad range of gasoline marine engines. It ensures proper serpentine belt tension for reliable accessory operation in Volvo Penta 4.3L, 5.0L, 5.7L, and 8.1L (GL, Gi, GXi, OSi series) engines, as well as select PCM/Crusader 5.0L and 5.7L V8 models.
It serves as a direct replacement for Volvo Penta part numbers 3885250, 3587858, 3587859, and 3861010, along with PCM/Crusader equivalents RA068001 and R065057.
- Engineered for direct OEM replacement installation.
- Constructed with a durable metal housing for longevity in marine environments.
- Includes a 1-year aftermarket warranty against manufacturing defects.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3885250 |
| Volvo Penta | 3587858 |
| Volvo Penta | 3587859 |
| Volvo Penta | 3861010 |
| PCM/Crusader | RA068001 |
| PCM/Crusader | R065057 |
Engine & Model Compatibility
Confirm your engine model in the table below. Note that specific year ranges are not available; verify fitment by part number and engine model.
This part is designed for various 4-stroke gasoline Volvo Penta engines, including GL, Gi, GXi, and OSi models from 4.3L to 8.1L, as well as V6 and V8 series engines.
It is also compatible with select 4-stroke PCM and Crusader 5.0L & 5.7L V8 engines.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Volvo Penta | 4.3GL-G, 4.3GL-GF, 4.3GL-J, 4.3GL-JF, 4.3GL-P | 4.3L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 4.3Gi-200-R, 4.3Gi-G, 4.3GiI-G | 4.3L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXiE-M, 4.3GXiE-P, 4.3GXiE-Q | 4.3L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.0GL-H, 5.0GL-HF, 5.0GL-J, 5.0GL-JF | 5.0L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 5.0GiC-225-S, 5.0GiC-J, 5.0GiC-JF | 5.0L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 5.0GiCE-225-S, 5.0GiCE-J, 5.0GiCE-JF, 5.0GiCE-M, 5.0GiCE-MF | 5.0L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.0GXiC-270-R, 5.0GXiC-J, 5.0GXiC-JF, 5.0GXiC-P | 5.0L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.0OSiE-J, 5.0OSiE-JF | 5.0L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.7GiC-300-J, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7GiC-300-R | 5.7L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.7GXiC-320-R, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiC-P | 5.7L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.7GXiE-320-R, 5.7GXiE-J, 5.7GXiE-JF, 5.7GXiE-P | 5.7L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 5.7GXiI-G, 5.7GXiI-H | 5.7L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.7OSiE-300-J, 5.7OSiE-300-JF | 5.7L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 5.7OSXiE-J, 5.7OSXiE-JF | 5.7L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 8.1GiC-400-J, 8.1GiC-400-JF, 8.1GiC-400-Q | 8.1L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| Volvo Penta | 8.1GiI-E, 8.1GiI-F, 8.1GiI-G, 8.1GiI-H | 8.1L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 8.1GXiE-J, 8.1GXiE-JF, 8.1GXiE-K, 8.1GXiE-KF, 8.1GXiE-P | 8.1L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 8.1GXiI-D, 8.1GXiI-E, 8.1GXiI-F, 8.1GXiI-G | 8.1L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 8.1IPSCE-JF, 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-PF, 8.1IPSCE-Q | 8.1L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | 8.1IPSE-JF | 8.1L | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| Volvo Penta | 8.1OSiE-J, 8.1OSiE-JF | 8.1L | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | V6-200-A, V6-225-A, V6-225-E-A | V6 | 4-Stroke | 3885250, 3587858 |
| Volvo Penta | V8-225-C-A, V8-225-C-B, V8-225-CE-A, V8-225-CE-B | V8 | 4-Stroke | 3885250, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| 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, 3587858 |
| PCM/Crusader | 5.0L, 5.7L V6, V8 engines | 5.0L, 5.7L | 4-Stroke | RA068001, R065057 |
Technical Specs
- Product Type
- Serpentine Belt Tensioner
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Housing Material
- Metal
- Housing Color
- Silver/Machined
- Weight
- 0.77 kg (1.69 lbs)
- Warranty
- 1 Year (aftermarket)
What’s in the Box
- 1 x Belt Tensioner (3885250)
Installation Notes
- Disconnect the negative battery terminal to prevent accidental shorts.
- Use a breaker bar or serpentine belt tool to rotate the old tensioner and release tension, then slide the belt off the pulley.
- Remove the mounting bolt(s) securing the old tensioner and remove it from the engine.
- Clean the mounting surface on the engine block to ensure the new tensioner sits flush.
- Mount the new tensioner, ensuring it is properly aligned, and torque the mounting bolt(s) to the manufacturer's specification.
- Route the serpentine belt according to the engine's diagram, ensuring it is seated correctly on all pulleys.
- Apply tension to the new tensioner and slide the belt over the final pulley. Slowly release the tool.
- Visually inspect the belt path and tensioner alignment. The indicator mark on the tensioner should be within the specified range.
- Reconnect the battery terminal, start the engine, and check for proper operation and any unusual noises.
Troubleshooting & FAQ
How do I know if my belt tensioner is failing?
Common signs include a chattering or grinding noise from the engine bay, excessive belt vibration, premature belt wear or fraying, and accessories (like the alternator or water pump) failing to operate correctly. You may also see the tensioner pulley visibly jumping or shaking while the engine is running.
What is the recommended replacement interval?
There is no fixed replacement interval for belt tensioners, but they are often replaced preventatively whenever the serpentine belt is changed (typically every 60,000 to 100,000 miles). If you notice any signs of wear or failure, it should be replaced immediately, regardless of mileage.
Will this fit other engine brands besides Volvo Penta and PCM?
This part is specifically designed to cross-reference the part numbers listed. While the base engines are used by multiple brands, we only guarantee fitment for the models explicitly mentioned in the compatibility table. Always verify your OEM part number before ordering.
What is the difference between an OEM and an aftermarket part?
This listing is for an aftermarket replacement, not a part from the original engine manufacturer (OEM). It is built to meet or exceed OEM-level specifications using comparable materials. Our parts are manufactured in an ISO 9001 certified facility and are batch-inspected to ensure quality and consistency.
What are your shipping speed and costs?
We ship worldwide quickly—typical transit time is 5–15 days for most regions. Standard shipping is free. Expedited shipping options and their costs will be displayed at checkout if they are available for your location.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for parts that are unused and in their original condition. See our full policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part before ordering. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is strongly recommended for safety and optimal performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigoriously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with an average transit time of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
Payment & Security
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