Part Number: 64210210. Key Features: Stud Girdle Nut - 7/16 Intake Long. Rocker Arm Nut - 7/16-20 in Thread - Steel - Stud Girdle - Big Block Chevy Intake - Each. Back to top. State Restrictions. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
