National Engine Crankshaft Seal for 1985-1997 AM General/Avanti/Buick/Cadillac/Chevrolet Commercial Chassis/C1500/C2500/K1500/K2500 4.3L
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National Engine Crankshaft Seal Kit (part number 5274A) - a direct-fit replacement for the vehicles in the compatibility list below.
Fits 1985-1997 across 9 makes including AM General, Avanti, Buick models including Commercial Chassis, C1500, C2500, K1500, K2500, R2500, Blazer, C10 and more - 4.3L 5.0L 5.7L.
Interchange / cross-reference: TF Victor 37026, Timken 5274A