AFR Rocker Arm Nut - 7/16-20 in Thread - 2.600 in Length - Black Oxide - Stud Girdle - Big Block Chevy (Set of 8) R07C08YXL Heavy-duty 40 vane brake rotors

Heavy-duty 40 vane brake rotors provide added strength and cooling over standard 36 vane rotors

this design eliminates flex promoting exact pedal feel and response

Center Bolt

Patented interchangeable discharge orifices match output of virtually any fuel pump (single large port included)

875 in Bore

AFR Rocker Arm Nut - 7/16-20 in Thread - 2.600 in Length - Black Oxide - Stud Girdle - Big Block Chevy (Set of 8) R07C08YXL Heavy-duty 40 vane brake rotorsProduct 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