ARP Subaru EJ Case Bolt Kit

ARP Subaru EJ Case Bolt Kit
SKU ARP-260-5401
$425.00

The ARP Pro Series Main Bolt Kits are forged from premium 8740 chrome moly and all the bolts feature generous under-head radius and heat treating for utmost reliability. The threads are rolled after heat treating, which makes them about 1000% stronger than most other main bolts. These bolts are nominally rated at 200,000 psi, and are application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit. 

Case studs are required when all out performance is the goal, it tightens the crankshaft cavity from opening up or the case halves shifting, both which can lead to premature bearing or crankshaft wear, loss of oil pressure or catastrophic failure. Anytime case bolts are introduced to the case, a line bore or line hone is required as the higher recommended bolt torque egg shapes the current bore. This is a great time to upgrade to pinning the mains too.  If the pinning is performed, it also triggers the bore/honing of the mains so you would kill two birds with one stone.