Trans-Dapt Performance Products 9724 Crankshaft Pulley Features: Crankshaft Pulley Height: 3.13 Width: 1.00 Length: 16.50 Weight: 4.22 lbs Fitment: 1989/GMC/V3500/Sierra Classic Standard Cab Pickup 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::Due To Various Castings Cannot Guarantee A Perfect Fit^^1989/GMC/V3500/Sierra Classic Crew Cab Pickup 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::Due To Various Castings Cannot Guarantee A Perfect Fit^^1989/GMC/V3500/Sierra Classic Cab & Chassis 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::Due To Various Castings Cannot Guarantee A Perfect Fit^^1989/GMC/V3500/Sierra Classic Cab & Chassis 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::Due To Various Castings Cannot Guarantee A Perfect Fit^^1989/GMC/V3500/High Sierra Standard Cab Pickup 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::Due ...