ATI Damper - 7.425in - Steel - 6 Grv - External Balance - 3 Ring (2011 - 2017 Duramax LML & LGH Diesel) - ATI917376
High-Strength Steel Super Damper for 20112017 Duramax LML & LGH 6.6L Diesel Engines
The ATI 7.425-inch Steel Super Damper (part ATI917376) is purpose-built for 20112017 Duramax LML and LGH 6.6L diesel engines. Featuring a 6-groove pulley layout and external balance design, this 3-ring damper is engineered to eliminate destructive torsional vibration and crankshaft twist under extreme torque loads. Whether your truck is towing heavy, street-tuned, or built for diesel performance, ATI delivers smoother operation, longer bearing life, and unmatched reliability.
Performance Highlights
- 7.425-inch outer diameter delivers excellent harmonic damping at all RPMs
- 6-groove pulley configuration maintains factory belt alignment and accessory performance
- External balance tuned precisely for Duramax crankshaft geometry
- All-steel 3-ring construction for strength, heat resistance, and vibration absorption
- SFI 18.1 certified and fully rebuildable for long-term service
Quick Specs
- Outer Diameter: 7.425 inches
- Material: Steel
- Pulley Layout: 6-Groove
- Design: 3-Ring Super Damper
- Balance Type: External
- Certification: SFI 18.1
- Engine Compatibility: Duramax LML & LGH 6.6L Diesel
- Years: 20112017
- Part Number: ATI917376
Why Choose ATIs 20112017 Duramax LML/LGH Super Damper?
The ATI917376 provides the advanced harmonic control required for the modern Duramax platform. Its precision-balanced steel construction minimizes crankshaft stress caused by high boost and tuning upgrades. This damper enhances smoothness, protects rotating assemblies, and delivers reliable performance whether on the street, track, or worksite. Designed and tested to exceed OEM performance standards, ATIs Super Damper is a must-have for serious diesel builders.
Frequently Asked Questions
Does this damper fit both Duramax LML and LGH engines?
Yes. The ATI917376 is compatible with all 20112017 Duramax LML and LGH 6.6L diesel engines using the factory front drive setup.
Is the damper SFI 18.1 certified for racing?
Yes. This damper is SFI 18.1 approved, making it safe and legal for sanctioned diesel performance and competition use.
Do I need to rebalance the engine after installation?
No. This is an externally balanced damper designed to match factory Duramax balance specifications.
Can the damper be rebuilt?
Yes. The ATI917376 Super Damper is fully rebuildable using ATI service kits, extending its service life indefinitely.
Vehicle Fitment
- 2011 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2011 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2011 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2011 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2012 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2012 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2012 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2012 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2013 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2013 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2013 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2013 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2014 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2014 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2014 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2014 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2015 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2015 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2015 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2015 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2016 Chevrolet Silverado 2500HD Duramax LML 6.6L Diesel
- 2016 Chevrolet Silverado 3500HD Duramax LML 6.6L Diesel
- 2016 GMC Sierra 2500HD Duramax LML 6.6L Diesel
- 2016 GMC Sierra 3500HD Duramax LML 6.6L Diesel
- 2017 Chevrolet Express Van Duramax LGH 6.6L Diesel
- 2017 GMC Savana Van Duramax LGH 6.6L Diesel
Contact Beefcake Racing
Beefcake Racing is your trusted source for ATI Super Dampers and diesel performance upgrades. For expert support or to place an order, email sales@beefcakeracing.com or call 1-855-827-7223. Our team will help you find the perfect damper for your Duramax build.
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