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

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 ..

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

Great product

The bomb!!

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.

The best thing I bought for my truck. Had an exhaust leak. Fixed it right up. Been holding strong for over 2 years. Great product.

Chevy 2500 6.0 worked as they should haven’t had any issues so far

nice.