JEGS Rear Main Seal Adapters

Use Your Early Crank in Late Model Engine Blocks

JEGS Rear Main Seal Adapters allow the use of standard small block Chevy crankshafts in 1986 & later engine blocks. This modification allows the use of the earlier crank and this fits more common flywheels or flexpates, and may be used to eliminate the external balance on the stock late model small block Chevy.

Features:
• Use Standard Flywheels & Flex Plates with 3.625" Bolt Circle
• Eliminate External Balance
• Use Early or Late Style Oil Pans