This 1/2 thick billet aluminum CNC machined plate replaces the factory weak cast rear main seal housing. Its thick CNC construction helps support the rear of the block and provide a stable housing for the rear main seal to help prevent leaks and increase block stability. Includes ARP hardware and MMR 1 piece rear main seal. Fits all 2011-2017 blocks including Ford Racing blocks and GT350 5.2 blocks. For use with all stock and aftermarket crankshafts. A MUST FOR ANY HIGH HP BLOCK BUILD!
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