B58 ARP Main Stud Kit

This ARP Main Stud Kit is designed to replace BMW part numbers 11128644674 and 11127613127 for the B58; B58A, B58C, B58D engines found in varies BMW chassis F22, F23, G20, G22, G23, G26, G30, G01, G02, G29, G42, G43, F30, F31, F32, F33, F34, F36 and the Toyota GR Supra A90/A91 chassis.

Upgrading from factory main bolts to ARP Main Studs is a simple, yet greatly beneficial upgrade.

ARP Main Studs offer the following benefits: - Uniform Clamping Force: ARP Main Studs provide a uniform clamping force that OEM bolts cannot.

With the improved distribution of pressure across main bearing caps comes better, more precise crank alignment for stability and longevity.

- Improved Block Stability and Rigidity: ARP Main Studs improve block rigidity and therefore stability.

This ensures maximum power transfer from the crank to the drivetrain, which in turn ensures: - Improved Throttle Response - Greater Horsepower - Higher Torque Output - Prevent Main Cap Walk: This occurs as main caps shift and move out of position, which can cause crank and engine damage - Reduced Risk of Fastener Stretching: Under high RPM applications and high loads, factory main bolts are prone to stretching and deforming.