ARP Main Stud Kit, BMW S50B30/S50B32 EURO 340i CAT Cams offers the right

CAT Cams offers the right camshaft for your needs

2011-2018     F12/F13/F06     640i Gran Coupe

Upgrade your BMW S65 with this premium valve kit and experience the difference in performance that comes from using top-tier components

including the E60 M5

Factory valve spec is 32mm Intake / 28mm Exhaust

ARP Main Stud Kit, BMW S50B30/S50B32 EURO 340i CAT Cams offers the rightThis ARP Main Stud Kit is designed to replace BMW 11112244286 for the S50B30 S50B32 Euro engines that was found in E36 M3. 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