Allstar Performance Rear Main Seal Adapter 86-Up Pan Billet Aluminum | ALL26126 2006-chevrolet-suburban-2500-esi4661504 MSD Ford 351W Street Pro-Billet

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Allstar Performance Rear Main Seal Adapter 86-Up Pan Billet Aluminum | ALL26126 2006-chevrolet-suburban-2500-esi4661504 MSD Ford 351W Street Pro-BilletThis Allstar Performance rear main seal adapter is a billet aluminum adapter that allows installation of a two piece style crankshaft seal and an early, pre 1986 crankshaft into a 1986 and newer small block Chevy (pre LS) engine using a 1986 and up style oil pan. The adapter includes mounting hardware. An alignment tool (sold separately) is available and recommended to ensure proper installation and centering of the adapter plate. Part number