ATI 917266 Super Damper Harmonic Balancer for GM LS1/LS2/LS3/LS6 Corvette/G8/SS

Vehicle Fitment

• 1997-2004 Chevrolet Corvette C5 (LS1 5.7L)
• 2001-2004 Chevrolet Corvette C5 Z06 (LS6 5.7L)
• 2005-2007 Chevrolet Corvette C6 (LS2 6.0L)
• 2008-2013 Chevrolet Corvette C6 (LS3 6.2L)
• 2004-2007 Cadillac CTS-V (LS2/LS6)
• 2008-2009 Pontiac G8 GT/GXP (L76 6.0L)
• 2014-2017 Chevrolet SS Sedan (LS3 6.2L)

Fitment Notes

• OEM stock diameter -- direct replacement for factory damper
• Designed for vehicles WITH air conditioning (includes A/C pulley groove)
• Fits GM LS Gen III/IV wet sump engines with internal balance
• Damper is interference fit -- must be pressed onto crankshaft with proper tool
• ATI 918999 installation tool required (plus 918999SC adapter for LS engines)
• ATI 918997 Torx bit required for shell bolt installation
• Mounting hardware NOT included -- reuse OEM crankshaft bolt

Features

• Patented 2-ring elastomer design eliminates torsional crankshaft vibrations
• SFI 18.1 certified for racing safety requirements
• Laser-engraved 360° timing marks for precise tuning
• Tunable and rebuildable for long-term service
• Black zinc chromate finish for corrosion resistance
• Countersunk bolts for flush front surface
• Dyno-tested O-rings for each application

Specifications

• Part Number: 917266
• Brand: ATI Performance Products
• Series: Super Damper Serpentine
• Type: Harmonic Balancer
• Outside Diameter: 7.530 in
• Engine Balance: Internal
• Pulley Grooves: 6-Rib Serpentine
• Keyway Quantity: One
• Bolt Hole Quantity: Three
• Construction: Elastomer O-Ring
• Shell Material: Aluminum/Steel
• Finish: Black Zinc Chromate
• Degree Markings: 360°
• SFI Rating: SFI 18.1
• Weight: 6.75 lbs
• UPC: 800157032073
• Country of Origin: USA

Included Components

• 1x ATI Super Damper harmonic balancer assembly
• Installation instructions

Product Description

The ATI 917266 Super Damper Serpentine Series Harmonic Balancer is engineered specifically for high-performance GM LS Gen III/IV engines. This OEM-diameter damper is a direct replacement for factory balancers on C5/C6 Corvettes, CTS-V, Pontiac G8, and Chevy SS vehicles equipped with LS1, LS2, LS3, LS6, or L76 engines with air conditioning. ATI's patented 2-ring elastomer design eliminates harmful torsional crankshaft vibrations that can rob power and cause engine damage.

Built to exceed SFI 18.1 specifications, this damper features precision laser-engraved 360° timing marks and a black zinc chromate finish. The 6-rib serpentine pulley maintains compatibility with factory accessory drive systems. ATI Super Dampers are tunable and rebuildable, providing long-term value for street performance and racing applications. Professional installation with ATI 918999 tool kit and 918999SC LS adapter required.