Description

Mercury / Quicksilver Stretch Belt Tool — 8M0146862

The Mercury Quicksilver 8M0146862 Stretch Belt Tool is a specialized OEM service tool designed to install single-use stretch alternator belts on late-model Mercury outboard engines. Instead of prying the belt on manually, this tool safely guides the belt onto the pulley while the engine is briefly “bumped” with the starter.

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What It Does

Many newer Mercury outboards use stretch-fit alternator belts that do not use a tensioner. These belts must be stretched onto the pulley during installation.

This tool:

• Hooks over the flywheel

• Guides the belt onto the alternator pulley

• Prevents belt damage or fraying

• Allows one-hand installation

The design reduces installation time to a couple of minutes and avoids damage that can occur when using pry bars or screwdrivers.

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Compatible Engines

Primarily used on late-model Mercury V-6 and V-8 FourStroke outboards, including:

3.4L V6 FourStroke

• 175 HP

• 200 HP

• 225 HP

4.6L V8 FourStroke / Verado

• 200 HP

• 225 HP

• 250 HP

• 300 HP

Typically applies to engines serial number 2B529482 and newer that use stretch alternator belts.

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Key Features

• Genuine Mercury / Quicksilver OEM tool

• Fits 5-rib and 6-rib pulleys

• Forged zinc-plated steel for corrosion resistance

• Smooth belt radius prevents belt damage

• Molded grip for secure handling

• Designed for 175–300 HP Mercury FourStroke engines

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Typical Use Case

Used during service when replacing the alternator belt on engines such as:

• Mercury 300 Verado

• Mercury 250 Pro XS

• Mercury 200–225 FourStroke

Without this tool, installing the belt can be difficult and may damage the belt.

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Quick Tip:
Stretch belts are usually single-use. Once removed, they should not be reinstalled—a new belt should be fitted using the installation tool.

Shipping: Ships same or next day for fast Canada wide shipping.