Sealed Power Main Bearing - Standard - Small Block Chevy 4663M RK-GMR25 LS head bolt kits are

LS head bolt kits are direct replacement OE style Torque-To-Yield (TTY) head bolts which make them ideal for use on stock and mild performance rebuilds

comfortable

Each kit covers virtually every carburetor in the listed "family"

Works with 2-Cycle oil blends as high as 20:1

Sealed Power Main Bearing - Standard - Small Block Chevy 4663M RK-GMR25 LS head bolt kits areProduct Description: Main Bearing Standard Small Block Chevy Sealed Power engine products are application engineered components, including pistons, piston rings, engine bearings, oil pumps and lifters. These proven replacement parts are the result of product development efforts, dedicated to putting only the absolute best on the street. Our engineers design and validate the engine parts to accommodate repowering engines due to wear. By leveraging this