Manufacturer's Part Number:
Summit Racing Part Number:
Rear Main Seal Adapter Type:
1-piece to 2-piece
Rear Main Seal Adapter Material:
Rear Main Seal Adapter Finish:
Mounting Hardware Included:
Can use 1-piece oil pan with this adapter.
Choose In-store pick-up (OH, GA, NV) on our web site.
Allstar Performance small block rear main seal adapters can be used to convert 1986 and later blocks with a one-piece rear main seal to accept an older-style, 2-piece seal crankshaft. These adapters are essential when installing an early-style (1985 and earlier) crankshaft into 1986 and later blocks. These rear main seal adapters are available in different applications and can be used with a one-piece or 2-piece oil pan, depending on your application. They are made from billet aluminum and include hardware.