2.89" Overall Diameter
V-Belt Belt Type
Steel
Chrome

• Adapts GM alternator to original 5/8" belt
• Durable and attractive chrome finish
• Fits 1963 and newer GM alternators

So, you've converted over to a 12-volt electrical system and bolted a GM alternator to your flathead Ford V8.
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"!
This chrome pulley is designed to fit on a GM alternator and use a 5/8" drive belt.

• 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
• Fits 1963 and newer GM alternators