ATI Damper 7.425in Steel 6-Groove External Balance 3 Ring (20062010 Duramax LBZ & LMM Diesel) ATI917369
High-Strength Steel Super Damper for 20062010 Duramax LBZ & LMM Diesel Engines
The ATI 7.425-inch Steel Super Damper (part ATI917369) is precision-built for GM Duramax LBZ and LMM diesel engines (20062010). Featuring a 6-groove pulley layout and external balance configuration, this damper delivers unmatched torsional control and engine protection under extreme torque and boost. Designed for both street-driven trucks and performance diesel builds, it ensures smoother operation, reduced vibration, and extended engine life exactly what serious Duramax owners demand.
Performance Highlights
- 7.425-inch outer diameter for optimal harmonic damping and belt stability
- 6-groove pulley layout maintains OEM accessory drive alignment
- External balance design for precise crankshaft stability in Duramax engines
- All-steel 3-ring construction provides superior strength and vibration absorption
- SFI 18.1 certified for competition-level safety and performance
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 LBZ & LMM (6.6L Diesel)
- Part Number: ATI917369
Why Choose ATIs Duramax LBZ/LMM Super Damper?
The ATI917369 is engineered for the extreme torque and vibration loads produced by modern diesel powerplants. It eliminates destructive crankshaft harmonics that can cause bearing wear or failure under heavy boost and towing loads. This Super Damper provides smoother operation, more consistent power delivery, and protection for engines that regularly see demanding conditions from street performance to sled pulling.
Frequently Asked Questions
Is this damper compatible with both LBZ and LMM Duramax engines?
Yes. The ATI917369 fits all 20062010 Duramax LBZ and LMM 6.6L diesel engines using the factory front drive setup.
Why is this damper externally balanced?
Duramax engines use an external balance configuration for proper crankshaft vibration control. This damper matches that factory balance design.
Is the damper SFI approved for racing applications?
Yes. It is SFI 18.1 certified and legal for use in all sanctioned diesel racing and pulling competitions.
Does it require modification for installation?
No. The ATI917369 is a direct-fit replacement for the factory harmonic balancer and installs with OEM hardware.
Vehicle Fitment
- 2006 Chevrolet Silverado 2500HD / 3500HD Duramax LBZ 6.6L Diesel
- 2007 Chevrolet Silverado Classic 2500HD / 3500HD Duramax LBZ 6.6L Diesel
- 2007 Chevrolet Silverado 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2008 Chevrolet Silverado 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2009 Chevrolet Silverado 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2010 Chevrolet Silverado 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2006 GMC Sierra 2500HD / 3500HD Duramax LBZ 6.6L Diesel
- 2007 GMC Sierra Classic 2500HD / 3500HD Duramax LBZ 6.6L Diesel
- 2007 GMC Sierra 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2008 GMC Sierra 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2009 GMC Sierra 2500HD / 3500HD Duramax LMM 6.6L Diesel
- 2010 GMC Sierra 2500HD / 3500HD Duramax LMM 6.6L Diesel
Contact Beefcake Racing
Beefcake Racing is your go-to source for ATI Super Dampers and Duramax performance upgrades. For product support or to place an order, email sales@beefcakeracing.com or call 1-855-827-7223. Our experts can help you select the right damper for your diesel application.
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