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Holley Harmonic Balancer Bolt - Chevy Big Block - 12-Point

Part # 97-321

  • 180,000 PSI Rating (Grade 9)
  • Made from Steel
  • Black E-Coat Finish
  • 1/2" Wrench Size
  • 12-Point Bolt Head
  • Large Diameter Extra Thick Washer - .200" Thick x 1.5" Diameter
  • Reusable - Not Torque-To-Yield

Description

Replacement harmonic balancer bolt with thick washer for Big Block Chevy Mid-Mount Accessory drive system. 12-Point, 1/2" Wrench Size, 1/2"-20 x 2.500" Under Head Length, Washer diameter 1.5" x 0.200" Thick.

Specifications

Bolt Grade10.9
ColorBlack
EngineChevy Big Block V8
FinishBlack E-Coat
Grade TypePerformance
Head Drive Type12 Point
Head Style12-Point
Length2.5 in
MaterialSteel
PSI Rating180,000
ReusableYes
Thread Diameter1/2 in
Thread Pitch20
Thread Size1/2-20
Under Head Length2.500"
Universal Or Specific FitUniversal
Washer Size.200" Thick x 1.5" Diameter
Washer(s) IncludedYes
Wrench Size1/2"
UPC / GTIN00090127068991
WarrantyManufacturer's Limited 90 Day Warranty