ARP 201-4307 BMW Head Stud Kit - S65 4.0L V8

The ARP 201-4307 head stud kit provides superior clamping force and reliability for BMW S65 4.0L V8 engines, making it an essential upgrade for performance builds and high-boost applications. These Pro Series cylinder head studs are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and rated at 220,000 psi tensile strength.

Key Features:

• Premium grade 8740 chrome moly alloy rated far superior to aircraft grade material
• Centerless ground for near-perfect concentricity
• Complete kit includes all needed studs and matching 12-point nuts
• Hardened parallel washers included for even load distribution and accurate torque readings
• Converts from head bolts to studs for improved clamping force
• Threads rolled after heat treatment for maximum fatigue strength
• Reusable for multiple engine builds

Head studs allow you to increase and more properly distribute torque when clamping down cylinder heads. This kit is ideal for forced induction builds, high-rpm applications, and racing engines where head gasket integrity is critical. ARP head studs are made with stronger material than OEM head bolts and resist tensile overload, torsional shear, and impact shear better than factory fasteners.