ARP (247-5403) Cummins Diesel Main Stud Kit
ARP Cummins Diesel Main Stud Kit 2004-2007 247-5403
ARP recommends the use of main studs over bolts whenever possible for
several key reasons. First is the ability to obtain more accurate torque
readings because studs don't "twist" into the block. All clamping
forces are on one axis. By the same token, there is less force exerted
on the block threads, which contributes to improved block life. Finally,
the there are factors of easier engine assembly and proper alignment of
caps every time.
There 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. The studs are manufactured from 8740 chrome-moly steel, heat-treated in-house to 200,000 PSI tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others.