ARP SBC 2004+ LS3 / LS4 Head Stud Thread Repair Kit

The 7/16"-14 thread size on this ARP repair kit is specifically chosen to address common issues with head bolt threads in 2004 and later LS3 and LS4 engines. When the original threads in your aluminum block become damaged, this kit offers a robust solution to restore them. It uses a high-strength, heat-treated alloy that’s built to withstand the clamping forces required for head gaskets.

This kit is designed to be a direct replacement for the factory thread inserts, making the repair process straightforward. The studs themselves are made from a strong, heat-treated alloy with rolled threads for improved fatigue life. ARP is well-known for making solid engine components, and this thread repair kit is no exception, offering a reliable way to get your engine back in service after thread damage.

When you're working on the top end of your LS engine, ensuring the head gasket seals properly is critical. This kit helps you achieve that by providing a solid foundation for your head studs. Always refer to the manufacturer's installation instructions for specific details on using this repair kit.