Description
Header bolts are critical fasteners that secure your exhaust manifold under extreme thermal and vibrational stress—factory hardware often fails under forced induction or sustained high-RPM operation. ARP’s chromoly construction with 12-point heads provides superior clamping force and reusability compared to single-use OEM bolts, ensuring your header stays sealed through countless heat cycles. This kit gives you the reliability needed for serious LS builds where header leaks kill both performance and durability.
- Material: Chromoly steel
- Finish: Black oxide
- Thread size: 8mm x 1.25
- Head style: 12-point
- Length: 1.181 inches
- Application: GM LS-series engines
- Quantity: 12 bolts per kit
- Fitment: Universal LS compatibility
- Installation: Bolt-on replacement
- MPN: 134-1202
