ARP Head Stud Kit, BMW S85

ARP Head Stud Kit – High Performance Engine Hardware

When building for boost, power, or reliability, upgrading to ARP Head Studs is essential. OEM head bolts are torque-to-yield and stretch over time, making them unreliable for high-performance applications. ARP head studs provide superior clamping force, durability, and long-term engine protection.

Why Upgrade to ARP Head Studs?

• Prevents head lift and head gasket failure

• Stronger and more consistent clamping force

• Improves torque accuracy (no twisting during install)

• Protects engine block threads

• Makes engine assembly and removal easier

• Ideal for boosted, track, and high-horsepower builds

Key Features

• Up to 1000% stronger than OEM hardware

• Trusted by top racing teams worldwide

• Includes hardened washers and aerospace-grade nuts

• Designed for extreme performance and reliability

Material Options

• ARP2000: Ideal for high-performance and forced induction builds

• L19: Recommended for high-horsepower setups (600+ WHP)

Important Notes

• OEM BMW head bolts are single-use and must be replaced once removed

• Aluminum block engines require Raceware Head Studs and Time-Sert installation

• Time-Sert services available in-house