Head Bolt Kit - 12pt GM LS 04 & Later

The ARP Head Bolt Kit - 12pt GM LS 04 & Later (MPN 134-3710) is an essential component for LS-series engine builders seeking reliability and performance. Designed for high-stress applications, this premium chromoly fastening solution ensures that engine builders can achieve the necessary clamp load for optimal performance. This kit is ideal for those engaged in performance builds, engine swaps, or restoration projects.

Constructed from high-quality chromoly steel and finished with a black oxide coating, each bolt in this kit features a 12-point head geometry that enhances wrench engagement and torque application. The engineering of this fastener kit guarantees uniform preload across all cylinder head mounting points, which is crucial for maintaining proper gasket sealing and preventing head lift during high-performance scenarios.

This head bolt kit is compatible with LS engine platforms from 2004 onward, including the LS2, LS3, LS7, and Gen IV variants. Whether your application is naturally aspirated, turbocharged, or supercharged, using the correct head bolt specification is vital to prevent gasket failure and coolant loss, ensuring the longevity and reliability of your engine.