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

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.

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!

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

Bolts came open and missing 2 washers ..

Highest quality fastener you can buy. Make sure you measure your header flange like I didnt. Got lucky and ordered right one this time.

Worked great on my 2015 silverado 5.3

Best there is. 100% satisfied

used these to replace the broken bolts on my LS2

Arp

It fit my 05 Silverado 1500, great replacement for the oem broken exhaust manifold bolts