This ARP header bolt kit fits GM LS-Series engines. Each 8mm x 1.25 thread bolt is 0.984 in long, uses a hex head, and includes washers. Bolts are machined from chromoly with a black oxide finish.
Specifications:
- Type: Header Bolt
- Thread: 8mm x 1.25
- Length: 0.984 in
- Head Style: Hex Head
- Washers: Included
- Material: Chromoly
- Finish: Black Oxide
- Quantity: Set of 12
- Part Number: 134-1101
Applications:
- GM LS-Series
FAQ
What engines does this header bolt kit fit?
GM LS-Series engines.
What size are the bolts?
8mm x 1.25 thread, 0.984 in long.
Are washers included?
Yes.
What head style is used?
A hex head.

