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Harmonic Balancer Bolt and Washer Set for 1965-1990 Big Block Chevy 396-454 [1/2-20 x 1-1/2 in., Grade 8, Zinc]
InfoVehicle Info Needed
MR GASKETPART NUMBER: 720-946G

Harmonic Balancer Bolt and Washer Set for 1965-1990 Big Block Chevy 396-454 [1/2-20 x 1-1/2 in., Grade 8, Zinc]

$3356
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$2457
Made in USA
Harmonic Balancer Bolt for Big Block Chevy 396-454 Engines [6-Point Hex Head]

555-82801

Harmonic Balancer Bolt for Big Block Chevy 396-454 Engines [6-Point Hex Head]

$899

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Zinc Finish
Harmonic Balancer Bolt and Washer Set
  • 1965-1990 Big Block Chevy 396-454
  • 1/2-20 x 1.500 in. Bolt
  • Tall Hex Head
  • Thick Parallel Ground Washer
  • Grade 8 Alloy Steel
  • Zinc Dichromate Finish
  • Sold as a Kit

    This harmonic balancer bolt and washer set secures the balancer on 1965-1990 Big Block Chevy 396-454 Mark IV engines in stock, high performance street, drag and circle track applications. The Grade 8 alloy steel bolt has a tall hex head to prevent slipping, and the extra-thick parallel ground washer provides more accurate, uniform torque.

    Mr. Gasket 946G Harmonic Balancer Bolt and Washer Set Features:

    • Fits 1965-1990 Big Block Chevy 396-454
    • 1/2-20 x 1-1/2 in. bolt
    • Grade 8 alloy steel
    • Tall hex head prevents wrench slipping
    • Extra-thick parallel ground washer
    • Zinc dichromate finish
      • Made from Grade-8 alloy material and heat-treated for superior strength, these harmonic balancer bolts feature a high hex head to prevent socket slippage while rotating the engine when degreeing a cam or adjusting the valves. An extra thick, parallel ground washer is provided to allow for a more accurate, uniform torque. Black plated finish, complete with split lock washer to prevent loosening caused by vibration.
    Part TypeHarmonic Balancer Bolt
    Product LineMr. Gasket Harmonic Balancer Bolts
    BrandMR GASKET
    Package Height0.6
    Package Width4.2
    Package Length6.2
    Weight0.43 PG
    Part CategoryReplacement Parts
    ColorYellow
    Underhead Length1.5 in (38.1 mm)
    QuantitySold as a Kit
    Fastener FinishZinc plated
    MaterialSteel
    GradeGrade 8
    Thread Size1/2-20
    Fastener MaterialSteel
    Engine Make/SizeChevy Big Block (396-454)
    Thread Size (In.)1/2-20 RH
    Washer(S) IncludedYes
    Part FitmentSemi Universal
    Head StyleHex
    FinishZinc
    Under Head Length1.500 in
    Vendor Part Number946G
    Package Qty1
    Package TypeEA

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