DIRECT FIT REPLACEMENT - Fits selected 2004+ Chevrolet Gen III IV LS Engines. Do not purchase until you have verified primary head bolt lengths (must all be the same length). Engineered to unleash more performance out of your vehicle. Centerless ground to assure perfect concentricity.

ULTRA STRENGTH - XOTIC 7200 alloy material properties allow for far greater tensile strength compared to standard bolts. Rated at 220,000 psi tensile strength. Threads rolled after heat treatment for optimum fatigue strength. Ample clamping strength prevents cylinder heads from lifting.

EASY INSTALLATION - Installation manual is included with drawn diagrams to ease the installation process. Our head bolts are designed to retain cylinder seal even with today's extreme high pressure turbo systems. These bolts far exceed clamping forces provided by standard head bolts.  

KIT INCLUDES - 30x Head Bolts, 30x Hardened Parallel Washer, 1x 10mm Hex Socket, 1x 13mm Hex Socket, 1x Fastener Assembly Lubricant & Instructions Manual. Black oxide finish protects from wear and tear. Hardened parallel washers allow for uniform load distribution and accurate torque readings.

WORRY-FREE PURCHASE - Xotic Performance is dedicated to offering LIFETIME WARRANTY and full money back guarantee if you aren’t satisfied. Rigorous quality inspections are undertaken to ensure premium product standards.