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

Top quality, nice washers to distribute the force, secured kooks headers to my cts-v. longer and overall better looking bolt than the cheap kit used previously. If I have to remove the headers in 10 years my hope is these back out nice and easy, and ARP is the name for that.

Great bolts for header install on gen 4 ls engines

Replaced broken factory bolts on 2005 Silverado.

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!

Used these to replace the broken header bolts on my 03 2500HD 6.0. Typical ARP quality, very nice finish and I have peace of mind that these bolts wont fail as easily as the OEM bolts did.

Bolts came open and missing 2 washers ..

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

Worked great.

Great product

Did the job!