Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L (Replaces 21132390, 3861034, 3889126, 3817290)
Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L (Replaces 21132390, 3861034, 3889126, 3817290) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L (Replaces 21132...
Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L (Replaces 21132390, 3861034, 3889126, 3817290) is backordered and will ship as soon as it is back in stock.
Product Details
This Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390) is a high-quality replacement designed for a range of Volvo Penta gasoline engines. It is engineered for 4.3L V6 and 5.0L-5.7L V8 models, including various GXi, Gi, OSi, and OSXi series marine inboards and stern drives, ensuring proper operation of the alternator and other critical engine accessories.
This part is a direct interchange for Volvo Penta part numbers 21132390, 3861034, 3889126, and 3817290.
- Engineered for a direct OEM-replacement fit and function.
- Durable rubber composite construction designed for marine environments.
- Drives the alternator and accessories on specified Volvo Penta engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 21132390 |
| Volvo Penta | 3861034 |
| Volvo Penta | 3889126 |
| Volvo Penta | 3817290 |
Engine & Model Compatibility
Confirm your engine model in the table below.
This serpentine belt is designed for a range of modern Volvo Penta V6 and V8 gasoline engines. Please verify your specific model for correct fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Volvo Penta | 4.3GXi-J | 4.3L V6 | 4-Stroke | 21132390 |
| Volvo Penta | 4.3GXi-JF | 4.3L V6 | 4-Stroke | 21132390 |
| Volvo Penta | 4.3GXiE-M | 4.3L V6 | 4-Stroke | 21132390 |
| Volvo Penta | 4.3OSi-J | 4.3L V6 | 4-Stroke | 21132390 |
| Volvo Penta | 4.3OSi-JF | 4.3L V6 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXi-J | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXi-JF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXi-N | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-J | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-JF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-K | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-KF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-M | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-MF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0GXiE-N | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0OSi-J | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0OSi-JF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0OSiE-J | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.0OSiE-JF | 5.0L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7Gi-300-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7Gi-300-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7Gi-300-N | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GiE-300-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GiE-300-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GiE-300-K | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GXi-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GXi-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GXi-N | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GXiE-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7GXiE-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSi-300-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSi-300-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSiE-300-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSiE-300-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSXi-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSXi-JF | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSXiE-J | 5.7L V8 | 4-Stroke | 21132390 |
| Volvo Penta | 5.7OSXiE-JF | 5.7L V8 | 4-Stroke | 21132390 |
Technical Specs
- Product Type
- Serpentine Belt
- Installation
- Direct OEM Replacement
- Belt Type
- V-Belt
- Length
- 1130mm (44.5")
- Thickness/Width
- 20mm (0.79")
- Material
- Rubber/Composite
- Color
- Black
- Belt Profile
- Serpentine/Ribbed
- Other Attributes
- Drives alternator and accessories on Volvo Penta marine engines
What’s in the Box
- 1 x Serpentine V-Belt (Replaces 21132390 / 3861034 / 3889126 / 3817290)
Installation Notes
- Disconnect the vessel's battery to prevent accidental starts or electrical shorts.
- Locate the belt routing diagram, usually on a decal in the engine bay. If it's missing, sketch or photograph the current belt's path.
- Using a socket or breaker bar, rotate the automatic belt tensioner to create slack in the belt.
- Carefully slide the old belt off all pulleys.
- Inspect all pulleys for wear, damage, or seizure before proceeding. Spin them by hand to check for smooth operation.
- Route the new belt according to the diagram, ensuring it sits correctly within the grooves of each pulley.
- Slowly release the tensioner to apply the correct pressure to the new belt.
- Double-check that the belt is properly seated and aligned on all pulleys.
- Reconnect the battery, start the engine, and visually confirm the belt is running smoothly and quietly.
Troubleshooting & FAQ
How do I confirm this belt fits my Volvo Penta engine?
This belt is for specific 4.3L, 5.0L, and 5.7L Volvo Penta GXi, Gi, OSi, and OSXi series engines. The most reliable method is to check your exact engine model against the 'Engine & Model Compatibility' table on this page. Also, verify that your current belt's part number is listed in our 'Part Number Matrix'.
What is the difference between this Serpentine Belt and a Timing Belt?
This is a serpentine belt (also called an accessory or V-belt). Its job is to power engine accessories like the alternator and water pump. A timing belt is an internal engine part that synchronizes the crankshaft and camshafts. The two parts are not interchangeable. This product is a serpentine belt.
What are common signs that my serpentine belt needs replacing?
Look for visible signs of wear such as cracks, fraying, glazing (a shiny or slick surface), or missing ribs. Audible signs include loud squealing or chirping noises from the engine bay, which may worsen during startup or under load.
Do I need a special tool for installation?
Most modern Volvo Penta engines use a spring-loaded automatic tensioner. You will likely only need a standard socket set with a long-handled ratchet or breaker bar to release the tension. No other highly specialized tools are typically required for belt replacement.
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.
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