ARP (247-5401) Cummins Main Stud Kit 1997-2006
ARP Cummins Main Stud Kit 1997-2006 247-5401
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.