Overview

Engine Works 12-Point Head Stud Kits for GM LS

Engine Works 12-point head stud kits for GM LS engines are high-strength fasteners designed to replace stock headbolts, providing superior clamping force for high performance, boosted, or high-compression builds. Machined from 42CrMo or 8740 chromoly steel with 220K psi tensile strength, these components prevent head gasket leaks and head lift, featuring 12-point nuts for easier installation and improved torque accuracy. Order the kit recommended for your year/application.

Key details:

* Kits are available for various GM Gen III and IV LS-based engines, including 4.8L, 5.3L, 5.7L (LS1/LS6), 6.0L, and 6.2L engines
* A full set usually includes 17 long studs, 5 medium, and 10 short studs, along with hardened parallel washers and 12-point nuts
* Constructed from high-strength steel with a black oxide finish to resist corrosion, the hardware offers a 220,000 psi tensile strength rating
* Ideal for upgrading from stock torque-to-yield bolts, these replacements increase clamping force, reducing the risk of cylinder head failure under high cylinder pressure
* Installation: 12-point nuts allow for easier socket access in tight engine bays compared to standard hex nuts
* These kits are often used for rebuilding LS engines in trucks (Silverado, Sierra), SUVs (Tahoe, Yukon), and performance cars (Camaro, Firebird, C5 Corvette) from 1997-2003 (Gen III) and 2004+ (Gen IV)

Applications

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