Oil Restrictor Kit. Fits newer GM-Style blocks (including Mark V and Gen VI),.0625" orifice diameter with oil lifter galley bosses flush with bell housing face. Two per pack
Features
- Reduces oil flow to upper engine assembly, leaving more oil available for the rod and main bearings
- Reduces power-robbing windage by reducing the volume of oil passing by the rotating assembly on its return to the pan
- Do not use with hydraulic lifters
- Orifice Size:
- .0625 in.
- Thread Size:
- 1/4 in. NPT
- Quantity:
- Sold as a pair.
