Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390)

Vendor: JLM Marine
Availability: In Stock
Product Type: Belt
$49.29
$49.29
Subtotal: $49.29

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Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390) - JLM Marine Boat Parts Limited

Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390)

$49.29

Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390)

$49.29

Serpentine Belt – Fits Volvo Penta 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 21132390)

This serpentine belt is designed for reliable performance in Volvo Penta gasoline marine engines. It is a direct-fit replacement for the belt that drives the alternator and other critical engine accessories, ensuring proper operation and power delivery.

Engineered to meet or exceed OEM specifications, this belt fits a wide range of Volvo Penta 4.3L V6 and 5.0L to 5.7L V8 models, including various GXi, Gi, OSi, and OSXi series inboards and stern drives. It serves as a direct replacement for Volvo Penta part numbers 21132390, 3861034, 3889126, and 3817290.

  • Direct Replacement Installation: Designed for an exact fit, requiring no modifications for installation.
  • Durable Construction: Made from a robust rubber/composite material to withstand the harsh marine environment.
  • Function: Drives essential engine accessories, including the alternator.

Part Number Cross-Reference

Use this table to confirm an equivalent part number for your application.

Brand Part Number
Volvo Penta 21132390
Volvo Penta 3861034
Volvo Penta 3889126
Volvo Penta 3817290

Compatible Engine Models

Confirm your engine model/year in the table below.

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 Specifications

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 Technical Attributes Drives alternator and accessories on Volvo Penta marine engines

Package Contents

  • 1 x Serpentine V-Belt (Replaces 21132390, 3861034, 3889126, 3817290)

Installation Guide

  1. Safety First: Ensure the engine is off and cool, and disconnect the battery terminals.
  2. Locate Tensioner: Identify the automatic belt tensioner pulley.
  3. Document Path: Take a clear photo or draw a diagram of the belt's routing around the pulleys.
  4. Release Tension: Use a properly sized wrench or breaker bar on the tensioner to release the belt tension.
  5. Remove Old Belt: Carefully slip the old belt off the pulleys.
  6. Inspect Pulleys: Check all pulleys for wobble, signs of wear, or damage before installing the new belt.
  7. Install New Belt: Following your diagram, route the new belt around all pulleys, leaving the tensioner for last.
  8. Apply Tension: Release the tensioner slowly to apply pressure to the new belt, making sure it is properly seated in every pulley groove.
  9. Final Check: Reconnect the battery, start the engine, and listen for any unusual noises while visually confirming the belt is running true.

Troubleshooting & FAQ

How do I know if this belt fits my Volvo Penta engine?

This belt is designed for specific Volvo Penta 4.3L, 5.0L, and 5.7L V6/V8 engines in the GXi, Gi, OSi, and OSXi series. Please check our "Compatible Engine Models" table and cross-reference your exact model number. It is also critical to confirm that your current belt's part number matches one of the direct replacements: 21132390, 3861034, 3889126, or 3817290.

What are the signs my serpentine belt needs replacement?

Common signs of a failing belt include visible cracks, fraying, missing ribs, or a glazed, shiny appearance on the belt surface. You may also hear loud squealing or chirping sounds from the engine bay or experience problems with accessories like a weak alternator or overheating.

What is the difference between a serpentine belt and a timing belt?

This product is a serpentine belt, also known as a V-belt or accessory drive belt. Its job is to power engine accessories like the alternator and water circulation pump. It is different from a timing belt, which synchronizes the engine's internal crankshaft and camshafts. M-istaking one for the other can cause serious engine damage, so always verify the correct part for your needs.

OEM vs. Aftermarket?

This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?

We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?

This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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