ARP Custom Age 625 Plus Connecting Rod Bolts M9 x 45mm

The ARP 201-6001 is a set of 16 Pro Series connecting rod bolts, precision CNC-machined from Custom Age 625 Plus material for enhanced reliability and durability in high-performance applications. These bolts are heat-treated and feature rolled threads, offering up to ten times more fatigue strength than standard OEM fasteners. The Custom Age 625 Plus alloy boasts a tensile strength of 260,000 psi, making these bolts fully capable of withstanding the extra stress of high-combustion engines. The set includes 16 bolts with an M9 thread size, a 45mm underhead length, and require a 7/16" 12-point socket for installation, preventing damage to the fastener head. Specifically engineered for the BMW 4.0L S65 V8 engine, this kit is crucial when replacing rod bearings, addressing known issues in this high-revving engine. ARP recommends using their Ultra-Torque Fastener Assembly Lubricant on the threads and employing the stretch method for tightening. Applications include the 2008-2013 BMW 3-Series and other BMW S65 V8 engines.