Oil restrictors reduce the amount of oil flow to the top of the engine, reducing the risk of evacuating the oil
pan in continuous high rpm engines while allowing more oil to be directed to the main and rod bearings.
Restrictors have a .055″ I.D. hole and include two extra O-ring seals. Package of 2.

Part No………Description
ALL90070………SB/BB Chevy, Aluminum With Hex Head