V-Belt – Fits MerCruiser 4.3L, 5.0L, 5.7L V6/V8 Engines (Replaces 57-816295Q, 816295T)

V-Belt – Fits MerCruiser 4.3L, 5.0L, 5.7L V6/V8 Engines

This V-belt is designed for MerCruiser 4.3L V6 and 5.0L/5.7L V8 stern drive engines from 1983–1989 that are equipped with a 7" water pump pulley. It is specifically used to power the power steering system.

This part directly replaces MerCruiser part numbers 57-816295Q, 57-816295T, 816295Q, and 816295T. It is also an equivalent for Sierra 18-15490, Mallory 9-55007, Volvo 15525, and Crusader 897511-C2.

• Application: Powers the power steering system.
• Fitment Note: Designed for engines with a 7" water pump pulley.
• Material: Constructed from durable synthetic rubber with fiber reinforcement for longevity and reliable performance.

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. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x V-Belt

Explosion Diagram

Installation Guide

1. Ensure the engine is off, cool, and the battery is disconnected for safety.
2. Locate the old power steering V-belt and take note of its routing path around the pulleys.
3. Loosen the tensioner pulley or the accessory's mounting bolts to release tension on the belt.
4. Carefully slide the old belt off the pulleys.
5. Install the new V-belt, ensuring it is correctly seated in the grooves of all required pulleys.
6. Apply appropriate tension to the belt according to your engine's service manual specifications. Do not overtighten.
7. Tighten all accessory mounting bolts and the tensioner securely.
8. Reconnect the battery, start the engine, and briefly check for proper belt alignment and operation.

Troubleshooting & FAQ

How do I know if this V-belt is the right one for my MerCruiser engine?

This belt fits MerCruiser 4.3L, 5.0L, and 5.7L engines from 1983-1989 that are specifically equipped with a 7-inch water pump pulley for the power steering system. The best way to confirm fitment is to verify these details and match your old part number to one of the cross-references listed, such as 57-816295Q or 57-816295T.

What are common signs that my power steering belt needs to be replaced?

Key symptoms of a failing V-belt include high-pitched squealing noises (especially on startup or during sharp turns), visible cracks or fraying on the belt, a glazed or shiny appearance on the belt surface, or a noticeable decrease in power steering assistance.

How often should I inspect or replace this belt?

V-belts are a standard maintenance item. It is recommended to visually inspect the belt at least once a season for signs of wear, such as cracking, glazing, or contamination with oil. Replace it immediately if any damage is found or as a preventative measure every few years to avoid unexpected failure on the water.

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.