Mr. Gasket 2231G HEADLOCK Locking Header Bolts Height: 5.70 Width: 4.10 Length: 1.50 Weight: 0.72 Fitment: 1989/GMC/V3500/Sierra Classic Standard Cab Pickup 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/Sierra Classic Crew Cab Pickup 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/Sierra Classic Cab & Chassis 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/Sierra Classic Cab & Chassis 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/High Sierra Standard Cab Pickup 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/High Sierra Crew Cab Pickup 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/High Sierra Cab & Chassis 4-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated^^1989/GMC/V3500/High Sierra Cab & Chassis 2-Door/7.4L 454Cu. In. V8 GAS OHV Natura...