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ARP Case Bolt Kit for Subaru Impreza WRX STi 2.0L EJ20 2.5L EJ25 2.5L EJ257
Key facts
Vehicle make
Subaru
Engine capacity
2.0 l
Engine code
EJ20 / EJ25 / EJ257
In brief

ARP Case Bolts are forged from very durable materials and make for a perfect option when rebuilding an engine to hold big power. Details: • 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% stron...

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ARP Case Bolts are forged from very durable materials and make for a perfect option when rebuilding an engine to hold big power. Details: • 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 Don't settle for anything less than the best!

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