This main cap bolt is a stock-replacement fastener for GM Gen III and Gen IV LS engines, designed to secure the crankshaft main bearing caps during engine assembly or rebuilds. It provides proper clamping force for the main caps and maintains engine bottom-end integrity when used per specification. Each bolt is sold individually, making it easy to replace only the quantity needed for a rebuild or maintenance job.

Brian Tooley Racing BTR60272 Features:

• Fitment: GM Gen III and Gen IV LS-series engines
• Function: Fastens main bearing caps to secure crankshaft bearings
• Stock-replacement for OEM main cap bolts
• Direct-fit bolt design — ideal for rebuilds or repairs without block modification
• Sold individually — 10 bolts required per engine for full main cap coverage

Brian Tooley Racing BTR60272 Notes:

• Sold individually; 10 bolts are required per LS engine for main cap installation
• Ensure correct torque and installation procedure to maintain bearing integrity and crank alignment