ARP Main Stud Kit, BMW S38 M20 MLS Gasket A rigorous 48-hour heat treatment

A rigorous 48-hour heat treatment and stress-relief process guarantees the valves' molecular integrity

Ferrea also offers precision CNC-machined retainers designed for optimal strength and stability

Unique to 5150

135 mm for M20B23 and M20B25 engines

ARP Main Stud Kit, BMW S38 M20 MLS Gasket A rigorous 48-hour heat treatmentThis ARP Main Stud Kit is designed to replace BMW 07119912680 for the S38B35, S38B36, and S38B38 found in the E24, E28, and E34 M5 and M6 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