ARP Pro Series Rocker Arm Stud Kit - SB Chevy - 7/16-20 Thread - 2.00 Effective Stud Length Battery Disconnect Switch and the tether bolts come

and the tether bolts come with thread locker pre-installed

This optional bracket kit allows the 215R to be used on engines without a hole in the head

5 in OD Tube

Care instructions published by Nomex(R) manufacturer DuPont

and include lighted mechanical gauges

ARP Pro Series Rocker Arm Stud Kit - SB Chevy - 7/16-20 Thread - 2.00 Effective Stud Length Battery Disconnect Switch and the tether bolts comePro series rocker arm studs are made from 8470 chromemoly steel and are heat treated to 200, 000 psi tensile strength. Studs are concentric within . 005 T. I. R. thread pitch to thread pitch, which gives you more consistent rocker geometry. Extra large radius base, studs are more resistant to flex and will provide a more positive seating. Rocker arm studs were designed for use with Perma Loc adjusters (not for use with OEM style, self locking nuts).