Upgrade or replace your harmonic balancer bolt on Chevy LS engines – this one's a direct fit for ARP 234-2503 and works on LS1, LS2, LS3, LS6, and more. Made from strong 8740 chromoly steel with a black oxide finish, it's built to handle high stress. 12-point head for easy torquing, 200,000 psi yield strength, and 4.33\ underhead length. Includes mounting hardware and matches OEM specs. Whether you're building a performance motor or just doing maintenance, this bolt gives you peace of mind. No need to overpay for the brand name – this unbranded version does the job just as well.