ATI Damper - 7.425in - Steel LW - 8 & 4 Grv - LS1-2-3-6 & L76 - 97-13 - Y Body & SS & G8 - 3 Ring ATI APPATI917345
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ATI Damper - 7.425in - Steel LW - 8 & 4 Grv - LS1-2-3-6 & L76 - 97-13 - Y Body & SS & G8 - 3 Ring

ATI
APPATI917345
800157031748
Crankshaft Dampers
3 Units In Stock - Ships Next Business Day
$ 518.95
$ 518.95

SKU: ATI917345 | UPC: 800157031748

ATI Damper 7.425in Steel LW 8 & 4 Groove LS1-2-3-6 L76 04-09 GTO Trailblazer SS G8 3 Ring

This ATI crankshaft damper provides precise harmonic control for LS1 LS2 LS3 LS6 and L76 engines in 2004-2006 Pontiac GTO 2006-2009 Chevrolet Trailblazer SS and 2008-2009 Pontiac G8 GT models. The 7.425 inch lightweight steel construction with 8 and 4 grooves matches OEM pulley specifications for direct bolt-on fit and accessory drive compatibility. It absorbs crankshaft vibrations to enable higher RPM operation reliable power delivery and extended engine life.

Key Features

  • Lightweight Steel Build: Reduces rotational mass for quicker engine revs improved throttle response and strength under forced induction or elevated horsepower levels.
  • 7.425in Outer Diameter: Matches factory crank pulley dimensions for accurate belt tension accessory alignment and full drive system operation on LS-equipped vehicles.
  • 8 & 4 Groove Pulley: Supports OEM serpentine belts and aftermarket upgrades through main drive and jackshaft grooves for versatile power handling.
  • 3-Ring Seal Design: Secures damping elastomer with three rings to prevent oil contamination and deliver consistent vibration damping across high mileage.
  • SFI 18.1 Certification: Confirms structural integrity for drag racing and street driving to guard against harmonic damage at high speeds.

Product Notes

  • Inspect crank snout and threads for damage prior to install to avoid imbalance issues.
  • Re-torque damper bolt after 100 miles of operation.
  • Ships fully assembled with protective coating intact.

Installation Notes

  • Professional installation recommended.
  • Includes Grade 12.9 crank bolt torque to 240 ft-lbs then 135 degrees turn.
  • Aligns with factory timing marks uses OEM woodruff key position.

This Part Fits

Year Make Model Submodel
2004-2006 Pontiac GTO All
2006-2009 Chevrolet Trailblazer SS
2008-2009 Pontiac G8 GT

Why Choose ATI?

  • Proven leader in SFI-certified dampers for over 50 years.
  • Engineered for LS engines in racing and street applications.
  • Machined in USA from billet steel for exact balance and fit.

Frequently Asked Questions

  • Q: Will this damper fit a 2005 Pontiac GTO with LS2 engine?
    A: Yes it bolts directly to 2004-2006 GTO LS1 or LS2 cranks with matching 7.425in pulley specs.
  • Q: What shell material and inner construction?
    A: Lightweight steel outer shell bonds to high-tension elastomer inner ring for vibration absorption.
  • Q: What warranty coverage applies?
    A: One year unlimited mileage street warranty two years competition with proper install and maintenance.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective foam-lined box 12 x 12 x 6 inches
  • Weight: 14.2 lbs product 16 lbs shipping

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