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Mr. Gasket

Mr. Gasket Harmonic Balancer Bolt and Washer Set

Fits 283-400 Chevrolet Gen I Small Block

Part # 7845 Be the first to write a review
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Secure the harmonic balancer or dampener on your Chevy. Works on original equipment, high performance street, drag or circle track applications. Features a heat treated black oxide coated Grade 8 alloy steel bolt for strength with a tall hex head to prevent wrench from slipping. An extra thick parallel ground washer provides accurate, uniform torque, and a lock washer is also included.


  • Heat treated black oxide coated Grade 8 alloy steel
  • Tall hex head bolt to prevent wrench from slipping
  • Extra thick parallel ground washer provides accurate, uniform torque

About Mr. Gasket

Using his own '57 Chevy as a rolling testbed, drag racer Joe Hrudka launched the most famous gasket company in the world more than half a century ago. Mr. Gasket is the go-to gasket source for racers with gaskets and fasteners that seal perfectly every time.

Brand Mr. Gasket
Emission Code5
EngineChevrolet Small Block Gen I
FinishBlack Oxide
Product TypeHarmonic Balancer Bolts
WarrantyLimited 1 Year Warranty
Part Number7845

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Limited 1 Year Warranty: See Details

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