Harmonic Balancer Bolt; 180000 PSI; 4135 Chrome Moly; 5/8 in. Wrench Size; w/Thick Washer; For Pontiac 350-455; 12 Point; 5/8 in. -18 x 1.58 in. Under Head Length; w/out Logo;
Earl's harmonic balancer bolts are made from high quality chrome moly steel with 180,000 PSI rating. The extra-tall 12-point bolt head won't strip or allow the socket to slip-off when turning over the engine. Includes extra thick large diameter washer. Bolt and washer are black oxide coated.
  • 180000 PSI Rating
  • Made From 4135 Chrome Moly
  • Black Oxide Coating
  • Extra Tall
  • 12 Point Bolt Head
  • Wont Strip Or Allow Socket To Slip
  • Extra Thick Washer

Additional Information:

Fast Efficient Shipping

Through our distribution network Deliveries can be as fast as Next Day Delivery.
Delivery times vary by destination, tracking information is provided with every purchase.

Get it Installed

JB's Power Centre offers on-site professional installation services in Calgary and Edmonton, AB.
We have on staff licensed Mechanical Technicians as well as MECP Certified 12-Volt Technicians.

* Extend your products Manufacturer Warranty

All products include a manufacturer warranty, but you can extend this warranty with
JB's Purchase Protection Plan
*Available on select products.