OIL RESTRICTORS CHEV SB & BB MK4 BLOCK

Allstars Aluminium, Hex Head, oil restrictors for Small Block/Big Block Chevrolet, 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 inch I.D. hole and include two extra O-ring seals. Package of 2.