they improve valve control

12x Intake valves

then turned off and cooled completely to ambient temperature

70mm Intake / 8

Aerospace-grade alloy construction for outstanding strength and longevity

ARP Main Stud Kit, BMW M40/M42/M44 Extreme they improve valve controlThis ARP Main Stud Kit is designed to replace BMW 11111735525 for the BMW M40B16, M40B18, M42 B18, M43B16, M43B18, M43B19 or M44 B19 found in E36 and Z 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