So, you've converted over to a 12-volt electrical system and bolted a GM alternator to your Flathead. Now it's time to install the belt and pulley, but your engine uses a 5/8" belt and the alternator pulley is 1/2"!

Don't worry – Speedway has you covered. This chrome pulley is designed to fit on a GM alternator and use a 5/8" drive belt.


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General Information

This chrome pulley fits common GM alternators and accepts 5/8" Flathead-style drive belt.

Features

Allows the use of 5/8" wide Flathead-style belts on popular GM externally regulated, "SI" and one-wire alternators
Durable and attractive chrome finish

Application

1963 and newer GM alternators requiring a 5/8" wide V-belt

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Item #

Description

Units

Price

Qty

91016251

GM Alternator 5/8" Wide Belt Pulley, Chrome

$34.99

Some parts are not legal for sale or use in California on any pollution controlled motor vehicles.

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