ARP Chevy LS 3/8in Flange Hex Header Bolt Kit

Do it right the first time with these Bolts! Best around in fit, finish, quality! Spend the money on the right part for your application!

Perfect for my 5.7 LS1

Starting to rust only 24 hours after installation. I used these when installing headers on my 2001 Corvette, I havent quite finished the install of the rest of the system so the car has not even been started, yet these bolts are already rusting. Other than that, they work as a bolt should. But not worth the (almost) $40 in my opinion.

ARP is worth the money. Will buy the ARP head bolts for my 2004 GTO when I put the stage 2.5 CNC ported 243’s on. Beats Torque-to-yield by miles.

Installed headers. Been riding on them for about a month now.

Best Bolts. ShortyHeaders install 4.8 v8 07 Silverado 1500 z71 (new body style) torque to 11lb.ft start it, let it get hot, then torque to 18lb.ft. Good to go, have not came loose yet.

Remember not to over torque and strip your heads threads.

Installed on an 09 G8 GT, fit perfect, and of course stellar quality. Perfect for anyone doing headers or replacing factory manifold bolts on LS based blocks. It’s also a lot more convenient and easier to use a 10mm wrench in the spaces since the head is smaller on these. With them being smaller it even stopped the bolt from contacting the spark plug heat shield

Replaced broken factory bolts on 2005 Silverado.

Best there is. 100% satisfied