ATI Damper - 6.78in - AL - 6 Grv - 10 Per UD - LS1/2/3/6/L76 - 97-13 28T 8mm HTD Drive Rear - 3 Ring

Name: ATI Damper - 6.78in - AL - 6 Grv - 10 Per UD - LS1/2/3/6/L76 - 97-13 28T 8mm HTD Drive Rear - 3 Ring
Brand: ATI
SKU: A00N ATI917289
Price: 467.62 USD
Availability: InStock

$467.62

SKU: A00N ATI917289

In Stock

Ships by Jun 18

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The ATI 917289 is a 6.78-inch aluminum serpentine harmonic damper for GM LS series engines (LS1, LS2, LS3, LS6, L76). It features a 6-groove, 10% underdrive pulley system. This Super Damper reduces harmful engine vibrations and is used in performance and supercharged applications. Installation involves removing the old balancer and pressing on the new ATI unit, sometimes requiring a pinning kit for supercharged applications.

Fitment

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Specifications

Brand	ATI
Part Number	A00N ATI917289

Videos

ATI Harmonic Balancer and Lingenfelter 18% crank pulley assembly. 2013 Camaro ZL1/LSA

ATI Super Damper Installall: LS Series (Pt13 82-92 Camaro/Firebird LS Swap)

ATI Super Damper and Pin kit install - LS3/ LSA supercharged setup

LS Tech: How to Assemble an ATI Super Damper

LS Tech: Installing an ATI Harmonic Balancer

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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