Harmonic Balancer Bolt - Chevy Big Block - 12-Point

Harmonic Balancer Bolt w/ Thick Washer, Chevy Big Block 396-454, 12-Point, 5/8" Wrenching, 180,000 PSI, 1/2"-20 x 1.550" Under Head Length



$26.61   Suggested Retail
$23.95   Your Price
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Torque Harmonic Balancer Bolt to 110 ft-lbs.


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.


  • 180,000 PSI Rating
  • Made from High Strength 4135 Chrome Moly
  • Black Oxide Coating
  • 5/8" Wrench Size
  • Extra-Tall 12-Point Bolt Head - Won't Strip or Allow Socket to Slip Off
  • Large Diameter Extra Thick Washer


EngineChevy Big Block V8
FinishBlack Oxide
Head Style12-Point
Material4135 Chrome Moly
Product TypeHarmonic Balancer Bolts
PSI Rating180,000
Washer IncludedYes
Washer Size.270" Thick x 1.960" Diameter
Wrench Size5/8"

Tech Resources

Torque Harmonic Balancer Bolt to 110 ft-lbs.

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Some parts are not legal for use in California or other states with similar regulations.