ATI Damper 5.67in Aluminum 6 Groove 15% Underdrive VVT 1Pc (20092010 Dodge 5.7L HEMI Engine) ATI918447
5.67in Aluminum 15% Underdrive Super Damper for 20092010 Dodge 5.7L HEMI VVT Engines
The ATI 5.67-inch Aluminum Super Damper (part ATI918447) is precision-built for 20092010 Dodge 5.7L HEMI engines with VVT. Featuring a 15% underdrive ratio, 6-groove pulley, and a lightweight 1-piece aluminum design, this damper improves efficiency by reducing accessory drag while maintaining superior harmonic control. Its ideal for naturally aspirated or lightly boosted HEMI setups that demand smoother operation, stronger reliability, and reduced rotating mass.
Performance Highlights
- 15% underdrive ratio reduces accessory speed for horsepower and efficiency gains
- 5.67-inch compact diameter provides tight fitment with precise balance
- Lightweight 1-piece aluminum construction improves throttle response and rev speed
- 6-groove pulley supports OEM belt alignment
- Optimized for VVT 5.7L HEMI engines in 20092010 Dodge vehicles
- SFI 18.1 certified and fully rebuildable for long-term accuracy
Quick Specs
- Outer Diameter: 5.67 inches
- Material: Aluminum
- Pulley Type: 6 Groove
- Drive Ratio: 15% Underdrive
- Engine Type: VVT (Variable Valve Timing)
- Design: 1-Piece Super Damper
- Certification: SFI 18.1
- Applications: 20092010 Dodge 5.7L HEMI VVT Engines
- Part Number: ATI918447
Why Choose ATIs 15% UD Super Damper for 5.7L HEMI VVT Engines?
The ATI918447 Super Damper is the ultimate solution for improving the performance and efficiency of VVT-equipped HEMI engines. Its 15% underdrive ratio helps reduce parasitic loss without compromising accessory function, while the lightweight aluminum body provides crisp throttle response and smooth, vibration-free operation. Perfect for street builds and mild performance applications, this damper delivers reliability and precision under any condition.
Frequently Asked Questions
What does a 15% underdrive damper do?
The 15% underdrive reduces accessory speeds by about 15%, minimizing drag on the engine and improving overall performance and efficiency.
Is this compatible with VVT and non-VVT engines?
No. The ATI918447 fits VVT-equipped 5.7L HEMI engines (20092010) only. It will not fit earlier non-VVT HEMI configurations.
Is this damper good for daily-driven cars?
Yes. The slight underdrive improves throttle response and efficiency without affecting the operation of alternator, A/C, or power steering systems.
Can this damper be rebuilt?
Yes. Like all ATI Super Dampers, the ATI918447 is fully rebuildable using genuine ATI service components for long-term precision and performance.
Vehicle Fitment
- 2009 Dodge Charger 5.7L HEMI (VVT)
- 2010 Dodge Charger 5.7L HEMI (VVT)
- 2009 Dodge Challenger 5.7L HEMI (VVT)
- 2010 Dodge Challenger 5.7L HEMI (VVT)
- 2009 Dodge Magnum / 300C 5.7L HEMI (VVT)
- 2010 Dodge Magnum / 300C 5.7L HEMI (VVT)
Contact Beefcake Racing
Beefcake Racing proudly supplies ATI Super Dampers and premium performance components for Dodge and Mopar engines. For expert advice or to place an order, email sales@beefcakeracing.com or call 1-855-827-7223. Our specialists can help you find the right damper for your HEMI-powered build.
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