Main Stud Kit for BMW 2.5L (M50), 2.8L (M52), 3.0L (S50US) & 3.2L (S52US) inline 6

Main Stud Kit for BMW 2.5L (M50), 2.8L (M52), 3.0L (S50US) & 3.2L (S52US) inline 6There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs

Special ARP Pro Series NASCAR type stud kits have one of the studs drilled to facilitate sealing the carburetor in the engine by race officials

while the bolt kits come with washers

Pro Series main bolts are application-specific

originally developed for NASCAR competition

A hollow core serves to reduce the reciprocating mass

low-profile design

000 psi water pulley kits

Whether you’re mounting your fan directly to the water pump

J-form thread rolling after heat-treat and a special profile

The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today’s sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear

This material is easily contaminated and subject to stress corrosion

They are designed for each specific application and provide the optimum grip