What is the purpose of the elastomer rings in a harmonic balancer?

The elastomer rings in a harmonic balancer are designed to absorb torsional vibrations from the crankshaft. This helps protect the engine from damaging harmonics that can occur at various RPMs.

What does the '70' in 'w/70/70/70' refer to?

The '70' refers to the durometer rating of the elastomer rings. Durometer measures the hardness of rubber or plastic, with a higher number indicating a stiffer material. This specific kit uses 70 durometer rings, which are a medium-hard compound suitable for certain engine applications.

Can I use this kit to replace worn rings in any harmonic balancer?

This elastomer kit is specifically designed for use with ATI Super Harmonic Balancers. It is not intended for use with harmonic balancers from other manufacturers, as fitment and durometer ratings may vary.

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Specifications

Brand: ATI
Part #: ATI918985-70
UPC: 800157035234

ATI Elastomer Kit - 3 Ring - 5 - w/70/70/70

Name: ATI Elastomer Kit - 3 Ring - 5 - w/70/70/70
Brand: ATI
SKU: ati-ati-elastomer-kit-3-ring-5-w-70-70-70-t14-361663
Price: 41.91 USD
Availability: BackOrder

$41.91

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits ATI Super Harmonic Balancers.
Includes three 70 durometer elastomer rings.
Helps absorb crankshaft torsional vibrations.
Restores dampening function of the harmonic balancer.

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About this part

Product Details

This is the ATI 3-ring elastomer kit, part number 918985-70. It's designed to replace the rubber dampening rings within ATI Super Harmonic Balancers. These elastomers are crucial for absorbing torsional vibrations from the crankshaft, which helps protect your engine from damaging harmonics. If your current balancer's rubber rings are showing signs of wear, like cracking or separation, replacing them with this kit can restore its effectiveness.

This specific kit features three rings, each with a 70 durometer rating. The durometer number indicates the hardness of the rubber; a higher number means a stiffer, more resistant elastomer. This stiffness is chosen to match specific engine applications where a certain level of vibration control is needed. Replacing these rings is a common maintenance task when rebuilding or servicing an engine, especially if the balancer is being reused.