4.5" Double Groove A Section 4L Sheave with 5/8" (0.625") H-Style Split Taper Bushing - 2AK46H 6.5" If you are not sure

If you are not sure this is the right part

reducing the pulley size by 1/4" to 1/2" on average

This gauge reads every 100 PSI with tick marks every 50 PSI

This chrome finished bracket comes with both screws for mounting and is ready for installment

4.5" Double Groove A Section 4L Sheave with 5/8" (0.625") H-Style Split Taper Bushing - 2AK46H 6.5" If you are not sureCast Iron 4. 5" 2 Groove Dual Belt A Section 4L Pulley With 5 8" Sheave Bushing Masterdrive 2 Piece dual groove 4. 5" cast iron pulley sheave with 5 8" H bushing for A section belts. This is a high quality 2 piece pulley that measures 4. 5" outside diameter and is designed to be used with an H style bushing. This 5 8" bushing (Included) inserts into the center of the pulley and slides over the shaft. As you tighten down the bolts on the H bushing it