ARP Case Bolt Kit 2002-2015 WRX / 2004-2021 STI
The ARP Case Bolt Kit are forged from very durable materials and make for a perfect option when rebuilding an engine to hold big power.
- Forged from premium INCONEL 718
- All bolts undergo a generous under-head radius and heat treating for reliability
- Threads are rolled after heat treating to make them 1000% stronger than most other main bolts
- Bolts are rated at 200,000 psi
- Application specific
- Includes parallel-ground, hardened washers
- Some engine builders recommend line honing the case to remove any distortion created by the hardware
- Use OEM SUBARU torque specs and procedures, any other torque specs and lubricants may lead to case distortion damage.