Harmonic Balancer Bolt - GM LS1/LS6 - 12-Point

Harmonic Balancer Bolt w/ Thick Washer, GM LS1/LS6 4.8L-7.0L, 12-Point , 27mm Wrenching, 180,000 PSI, M16 x 2.0 x 4.330" Under Head Length


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Torque Harmonic Balancer Bolt to 235 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
  • 27mm Wrench Size
  • Extra-Tall 12-Point Bolt Head - Won't Strip or Allow Socket to Slip Off
  • Large Diameter Extra Thick Washer
  • Reusable - Not Torque-To-Yield


EngineGM LS1/LS6
FinishBlack Oxide
Head Style12-Point
Material4135 Chrome Moly
Product TypeHarmonic Balancer Bolts
PSI Rating180,000
Thread Size16mm x 2.0
Under Head Length4.330"
Washer IncludedYes
Washer Size.270" Thick x 1.960" Diameter
Wrench Size27mm
Part NumberDBT-004ERL

Tech Resources

Torque Harmonic Balancer Bolt to 235 ft-lbs.
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