Balancer Bolt & Washer Small Block Chevy

Name: Balancer Bolt & Washer Small Block Chevy
Brand: ARP
SKU: 070-234-2501
Price: 28.99 USD
Availability: InStock

^$28⁹⁹

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Ships on Nov 16, 2026

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555-82800

Harmonic Balancer Bolt for Small Block Chevy 283-400 Engines [6-Point Hex Head]

^$6⁹⁹

Small Block Chevy

Small Block Chevy
7/16"-20 Thread
2.470" UHL
13/16" Socket

SB Chevy harmonic balancer bolt kit

ARP's Harmonic Damper Bolts safety keep the damper locked into place as the crankshaft flexes and twists and the harmonic damper absorbs incredible amounts of kinetic energy. These damper bolts are ultra strong, 190,000 psi tensile strength that exerts maximum clamping force and are made from heat-treated 8740 chrome moly steel with heavy-duty black oxide finish. Available with a 12-point or square drive head.

12-Point Bolt: Features a 1/4" thick, wide area washer and an extra tall 12-point head accepts a deep socket and eliminates the worry of stripping the head.

Square Drive Bolt: 1/2" square drive forged into bolt head, accepts a standard 1/2? drive ratchet or breaker bar to facilitate rotating the crank assembly.

Part TypeHarmonic Balancer Bolt

Product LineARP Harmonic Damper Bolts

BrandARP

Package Height0.2

Package Width4.1

Package Length5.75

Weight0.59 PG

Part CategoryPerformance Parts

Thread Size (In.)7/16-20 RH

Washer(S) IncludedYes

Underhead Length2.47 in (62.7 mm)

Fastener Yield Strength (Psi)200,000