Engines and Components› Harmonic Balancers

ATI

GM Duramax 7.425in Steel Harmonic Damper - SFI

$529.50

SKU: A00N 917371

In Stock
In Stock
Ships by Jun 11
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

This ATI Super Damper Harmonic Balancer is designed for 2001-2005 GM Duramax 6.6L LB7 / LLY engines. It eliminates torsional crankshaft vibrations, exceeds SFI 18.1 specs, and features laser-etched timing marks.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandATI
Part NumberA00N 917371

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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