C6OZ-8509-A For any S code 390 engine without power accessories.
No air conditioning, no power steering, and standard 1 sheave alternators.
Single sheave pulley, 6-3/16 inches in diameter. When measured from the front of the water pump hub (or inside of the pulley) to the center line of the belt sheave the measurement is 2 inches.
Replaces Ford part number C60E-8509-C.