Mercury – Quicksilver V-Belt | Engine Drive Belt | 40” (1,016mm) | 69143Q

Overview

A dependable belt keeps your MerCruiser’s systems running in sync — from the alternator to the water pump. The Mercury Marine 69143Q Quicksilver V-Belt is a 40-inch (1,016mm) OEM replacement belt built for MerCruiser sterndrive and inboard engines. It’s made from durable, reinforced rubber that stays flexible under heat and load. Designed to the same specs as the original factory belt, it provides quiet, steady power transfer without slipping. Whether you’re doing preventative maintenance or replacing a worn belt, this part keeps your boat’s engine running smooth and dependable.

Key Features

• Purpose: Transfers power to your engine’s accessories for steady operation.
• Material: Built from reinforced rubber with strong fiber cords to handle tension and heat.
• Design: Exact replacement for the original factory-installed 40” MerCruiser belt.
• Performance: Maintains consistent grip to avoid squealing or power loss.
• Durability: Stands up to salt, oil, vibration, and marine heat.
• Ease of Installation: Straightforward swap using standard hand tools.

Engine & Boat Compatibility

• MerCruiser sterndrive engines
• MerCruiser inboard engines
  (Check your owner’s or service manual for exact model fit.)

Performance & Real-World Benefits

The 69143Q V-belt ensures reliable operation across all your engine’s driven systems. Over time, belts can stretch, glaze, or harden, causing noise and reduced performance. Installing a fresh belt restores proper tension, helping your alternator charge correctly and your cooling system run efficiently.

This 40-inch belt fits tightly, runs quietly, and keeps everything spinning the way it should. It’s a small maintenance job that pays off big — fewer surprises and smoother performance every trip out.

Why Choose Mercury OEM

The Quicksilver 69143Q is a genuine Mercury Marine belt, made to the same specs your engine was built with. Aftermarket belts might look similar but can vary slightly in width or construction, leading to premature wear or poor alignment.

Mercury’s OEM belts are tested for flexibility, heat resistance, and long-term performance in marine environments. Choosing genuine parts means you get a perfect fit and lasting reliability — exactly what you want from your MerCruiser.

FAQ

Q1: What size is this belt?
It’s 40 inches (1,016mm) long — a direct match to the original MerCruiser belt.

Q2: What engines will it fit?
It’s designed for MerCruiser sterndrive and inboard engines; confirm fit using your service manual.

Q3: What’s it made from?
A reinforced rubber blend with fiber cords for strength, flexibility, and durability.

Q4: When should I replace it?
Inspect your belt each season and replace it if you see cracking, fraying, or slippage.

Q5: Why OEM instead of aftermarket?
OEM belts fit exactly right, run quieter, and last longer under real boating conditions.