Crankshaft Kit for 91-00 & Marine GM/Chevrolet 7.4L/ 454 w/ 1pc Rear Main Seal

Enginetech Part Number: 123300 Crankshaft Kit With Bearings Fits 1970-1990 GM/Chevrolet 7.4L 454 16V OHV 2pc Rear Main Seal - 4.250in Bore Forging Numbers: 3967463, 3875945, N353039, 3963524 Cast...

Enginetech Part Number: 125100 Crankshaft Kit With Bearings Fits 86-02 GM/Chevrolet 5.7L 350 OHV VIN 'R,K,M' - 4.000in Bore Forging Number: 14088526, 14088535, 14088995 Engines with 1pc Rear Main...

Enginetech Part Number: 125600 Crankshaft Kit With Bearings Fits 76-85 GM/Chevrolet 5.0L 305 OHV 16V VIN 'G,H,U'- 3.736in Bore Forging Numbers: 3932442

Enginetech Part Number: 123200 Crankshaft Kit With Bearings Fits 1968-85 GM/Chevrolet 5.7L 350 16V OHV - 4.000in Bore? Steel Crankshaft Forging Numbers: 2690, 1182 Engines with 2pc Rear Main Seal Only