ARP is the world leader in fastener technology.

Makers of the finest fasteners in the market, especially for BMW engines, ARP is the choice when you want the highest reliability possible. Due to the fact that the OE Connecting Rod Bolt is typically one of the first failure points in the bottom end of the BMW engine (Turbo, SC, or Naturally Aspirated) We can't recommend these bolts enough! If your rebuilding you're engine, and have any performance aspirations but cannot afford upgraded aftermarket rods; invest in much stronger ARP con rod bolts.