AFR Rocker Arm Nut - 7/16-20 in Thread - 2.600 in Length - Black Oxide - Stud Girdle - Big Block Chevy (Set of 8) MAC-4P and universal 5-6 point system

and universal 5-6 point system for a fully-adjustable occupant fit

Full vacuum rating for sizes -10

Iridium Red Dark

Piston Ring Compressor

2A/20 specification

AFR Rocker Arm Nut - 7/16-20 in Thread - 2.600 in Length - Black Oxide - Stud Girdle - Big Block Chevy (Set of 8) MAC-4P and universal 5-6 point systemProduct Description: Rocker Arm Nut 7 16 20 in Thread 2. 600 in Length Steel Black Oxide Stud Girdle Big Block Chevy Set of 8 Advanced FLOW engineering (aFe Power) is a premier designer and manufacturer of automotive performance upgrade systems and components. Current product lines include cold air intake systems, high performance direct fit and racing air filters, exhaust systems, intercoolers, turbochargers, electronic programmers, diesel fuel