Katech Billet Steel Main Engine Caps | GM LS Engines (KAT-A4122)
Katech Billet Steel Main Caps for LS Engines
Upgrade your block for maximum durabilty. Katech caps are positioned with two, 1/4-inch steel dowels rather than the OEM aluminum locating register walls.
Optional ARP main stud kit available. ARP main studs are manufactured from 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength, and precision J-form threads rollad after heat-treat to create a fastener that has threads 1000% stronger than others. All kits come complete with hardened parallel-ground washers and aerospace quality nuts. Reduce crankshaft flex and main cap freeting with these premium quality main studs.