ARP 134-2501 Harmonic Balancer Bolt & Washer SBC Small Block Chevy


Balancer Bolt & Washer

  • Small Block Chevy
  • 7/16″-20 Thread
  • 2.470″ UHL
  • 5/8″ Socket
SKU: ARP134-2501 Category:

12-Point Bolt: Features a 1/4″ thick, wide area washer and an extra tall 12-point head accepts a deep socket and eliminates the worry of stripping the head.

Square Drive Bolt: 1/2″ square drive forged into bolt head, accepts a standard 1/2? drive ratchet or breaker bar to facilitate rotating the crank assembly




ARP Balancer Bolt & Washer

Small Block Chevy

ARP’s Harmonic Damper Bolts safety keep the damper locked into place as the crankshaft flexes and twists and the harmonic damper absorbs incredible amounts of kinetic energy. These damper bolts are ultra strong, 190,000 psi tensile strength that exerts maximum clamping force and are made from heat-treated 8740 chrome moly steel with heavy-duty black oxide finish. Available with a 12-point or square drive head.

Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to