Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 13/16 in 12 Point Head - Chromoly - Black Oxide - Big Block Chevy - Each

Harmonic Balancer Bolt - Ultimate-Duty - 1/2-20 in - 1.500 in Long - 5/8 in 12 Point Head - Steel - Black Oxide - Big Block Chevy - Each

Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 1-1/16 in 12 Point Head - Chromoly - Black Oxide - Big Block Chevy - Each

Engine and Accessory Fastener Kit - 12 Point Head - Chromoly - Black Oxide - Big Block Chevy - Kit

Engine and Accessory Fastener Kit - Hex Head - Chromoly - Black Oxide - Big Block Chevy - Kit

Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - Black Oxide - 20 Degree Heads - Aluminum Block - Big Block Chevy - Kit