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Rear Main Seal One Piece Rear Main Oil Seal

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Chevrolet converted its blocks to a one-piece rear main oil seal design beginning in 1986, but the stock car racing aftermarket has stuck with the crankshafts, oil pans, and other products that only work with the two-piece design. Thankfully, it's easy to install an adapter to convert your newer block to a two-piece design.
Rear Main Oil Seal Conversion - Sealing The Deal

 Chevrolet converted its blocks to a one-piece rear main oil seal design beginning in 1986, but the stock car racing aftermarket has stuck with the crankshafts, oil pans, and other products that only work with the two-piece design. Thankfully, it's easy to install an adapter to convert your newer block to a two-piece design.  View Related Article

 

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