ATI Damper 6.78in Aluminum 6 Groove OEM Size (20052010 Ford Mustang GT 4.6L Modular) ATI918039
OEM-Size Aluminum Super Damper for 20052010 Mustang GT 4.6L Modular Engines
The ATI 6.78-inch Aluminum Super Damper (part ATI918039) is engineered for 20052010 Ford Mustang GT 4.6L Modular engines, providing unmatched harmonic control while maintaining OEM pulley diameter. Built from lightweight aluminum and SFI 18.1 certified, this damper is ideal for both naturally aspirated and forced-induction builds that demand smooth operation, precision balance, and long-term durability. Its a direct-fit replacement that improves engine reliability and performance without altering belt speed or accessory drive ratios.
Performance Highlights
- OEM diameter (6.78-inch) maintains factory drive ratios
- 6-groove pulley fits stock accessory belts
- Lightweight aluminum construction for reduced rotating mass
- 3-ring design effectively absorbs crankshaft vibration
- SFI 18.1 certified for professional-grade reliability
- Fully rebuildable and precision-balanced
- Made in the USA and trusted by top performance builders
Quick Specs
- Outer Diameter: 6.78 inches
- Material: Aluminum
- Pulley Type: 6 Groove
- Size: OEM Diameter
- Rings: 3
- Certification: SFI 18.1
- Applications: 20052010 Ford Mustang GT 4.6L Modular
- Part Number: ATI918039
Why Choose the ATI 6.78in OEM-Size Super Damper?
The ATI918039 delivers factory-like fitment with race-level engineering. Its lightweight aluminum body and advanced damping system protect your crankshaft from destructive harmonics, ensuring smoother operation and longer engine life. For daily-driven Mustangs or track-ready builds, this damper provides the stability and balance needed for consistent performance without changing pulley ratios or requiring a retune.
Frequently Asked Questions
Is this damper a direct OEM replacement?
Yes. The ATI918039 fits directly in place of the factory damper on all 20052010 Mustang GT 4.6L Modular engines.
Will it change accessory or supercharger speeds?
No. This damper is OEM-sized, so all belt-driven components maintain their original speed and alignment.
Is tuning required after installation?
No tuning is necessary when replacing with an OEM-size damper, as it preserves factory pulley ratios.
Can it handle high-RPM or boosted applications?
Yes. With SFI 18.1 certification, this damper is safe for high-performance, boosted, and race-use applications.
Vehicle Fitment
- 2005 Ford Mustang GT 4.6L Modular
- 2006 Ford Mustang GT 4.6L Modular
- 2007 Ford Mustang GT 4.6L Modular
- 2008 Ford Mustang GT 4.6L Modular
- 2009 Ford Mustang GT 4.6L Modular
- 2010 Ford Mustang GT 4.6L Modular
Contact Beefcake Racing
Beefcake Racing is your trusted source for ATI Super Dampers and Ford Modular performance parts. For expert help or to place your order, email sales@beefcakeracing.com or call 1-855-827-7223. Our performance specialists can help you choose the perfect damper for your Mustang build.
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