A stud girdle only keeps the valvetrain rigid if the adjusting nut underneath is built to seat correctly against the girdle bar, and a standard rocker nut will not index the same way once the girdle goes on. This polylock nut is machined specifically as a replacement for Brodix stud girdles, so the rocker stays locked in adjustment.

Brodix BR6455 Rocker Arm Stud Girdle Adjusting Nut Features:

• Polylock design
• For full roller rocker arms
• Replacement adjusting nut for Brodix stud girdles
• Sold individually