EngineQuest OFA305 Chevy Oil Filter Adapter w/ Bypass
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This is a stock adapter with a bypass built into it. Replacement for stock oil filter adapter. Fits Small Block Chevy, Big Block Chevy, and early model 4.3L V6. Replaces GM part number 3952301. Includes two 5/16"-18 x 1" socket head cap screws.
Bolts directly to the block without a gasket.