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Holley

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

Replacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396-454 with Holley Mid-Mount Accessory Drive System 20-242 & 20-242BK

Part # 97-321 Be the first to write a review

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

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$14.44
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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.

Features:

  • 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

About Holley

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Brand Holley
Emission Code6
EngineChevy Big Block V8
FinishBlack E-Coat
Head Style12-Point
MaterialSteel
Product TypeHarmonic Balancer Bolts
PSI Rating180,000
ReusableYes
Thread Size1/2-20
Under Head Length2.500"
Washer IncludedYes
Washer Size.200" Thick x 1.5" Diameter
Wrench Size1/2"
UPC090127068991
Part Number97-321
Torque Harmonic Balancer Bolt to 85 ft/lbs.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

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