BBC REAR MAIN SEAL HIGH VAC 2 PIECE SILICON BIG BLOCK CHEV454 Aeroflow - AF 1871-1401-1

Let Aeroflow Performance supply the very best in engine gaskets for your engine rebuild. Rear main seals perform an important task at the back side of your crankshaft: keeping the oil inside the engine. When the original gaskets begin to leak through years of heat shrinkage or pitting, it is important to change these oil seals to prevent oil leakage. Designed to fit one- and two-piece rear main styles in different engine applications.