Fel-Pro Performance main bearing seals are made of high-grade materials, such as silicone, polyacrylate, or fluoroelastomer. Race engine builders prefer these premium seals for their severe-duty needs.

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FELPRO Rear Main Seal, 1-Piece, Rubber, Avanti, GM, For Hummer, For Chevrolet, Small Block, For Holden Commodore 5.7/6.0L, LS1, Each

FELPRO Rear Main Seal, 1-Piece, Rubber, Avanti, GM, For Hummer, For Chevrolet, Small Block, For Holden Commodore 5.7/6.0L, LS1, Each

$55.75