Marine V-Belt – Fits Volvo Penta 5.0L, 5.7L, 5.8L V8 Engines (Replaces 3852106)

Marine V-Belt – Fits Volvo Penta 5.0L, 5.7L, 5.8L V8 Engines (Replaces 3852106)

This marine V-belt is designed for a wide range of sterndrive engines, including various V8 models from Volvo Penta, and multiple engine series from MerCruiser and OMC. It serves as a direct-fit replacement for the accessory drive belt on power steering pumps, alternators, and water pumps.

Engineered for durability and reliable performance in the marine environment, this belt is constructed from high-strength EPDM rubber with reinforced cords to resist stretching, heat, and oil. The molded cog design ensures proper grip and flexibility around pulleys.

• Direct Application: Designed for power steering, alternator, and water pump applications on compatible engines.
• Durable Construction: Made from EPDM rubber with synthetic reinforced cords and molded cogs for longevity.
• Package Includes: One marine-grade V-belt.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Volvo Penta Applications

MerCruiser Applications

OMC Applications

Technical Specifications

Package Contents

• 1 x Marine V-Belt (Replaces 3852106)

Explosion Diagram

Installation Guide

1. Safety First: Ensure the engine is off and cool, and disconnect the boat's battery.
2. Locate the Belt: Identify the existing V-belt and the components it drives, such as the alternator, power steering pump, and water pump.
3. Release Tension: Locate the belt tensioner pulley or the adjustment bolt on one of the accessories (usually the alternator).
4. Loosen the Belt: Carefully loosen the tensioner or adjustment bolt to create slack in the belt.
5. Remove Old Belt: Once slack, slip the old belt off the pulleys. Note its routing path.
6. Install New Belt: Route the new belt around the pulleys following the correct path. Ensure the cogs sit correctly in the pulley grooves.
7. Apply Tension: Re-tighten the tensioner or accessory adjustment bolt until the belt is properly tensioned. A common rule is about half an inch of deflection when pressed firmly.
8. Final Check: Reconnect the battery, start the engine, and observe the belt to ensure it is running smoothly and quietly.

Troubleshooting & FAQ

Q: How do I confirm this V-belt will fit my specific engine?
A: The best way is to match your existing part number to one listed in our cross-reference table (e.g., 3852106 for Volvo Penta or 57-32850 for MerCruiser). You can also verify fitment by checking your engine model and year against our compatibility tables.

Q: What are the signs that my current V-belt needs to be replaced?
A: Common signs of a failing V-belt include loud squealing noises from the engine bay, visible cracks or fraying on the belt's surface, a glazed or shiny appearance on the sides, or accessories not functioning correctly (e.g., poor battery charging).

Q: Is this belt suitable for both power steering and alternator applications?
A: Yes, this V-belt is designed for driving engine accessories and is specified for use with power steering, alternator, and water pump systems on the listed engine models.

Q: OEM vs. Aftermarket?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.