ATI Damper 6.78in Aluminum (2) 6 Groove w/ A/C Pulley Aluminum Hub OEM Size (20112016 Ford Mustang Coyote 5.0L) ATI918047A
OEM-Size Dual 6-Groove Aluminum Super Damper for 20112016 Mustang Coyote 5.0L
The ATI 6.78-inch Aluminum Super Damper (part ATI918047A) is engineered specifically for 20112016 Ford Mustang Coyote 5.0L engines. Featuring dual 6-groove pulleys and an integrated A/C drive section, this damper maintains OEM accessory ratios while providing industry-leading harmonic control. With its lightweight aluminum hub and SFI 18.1 certification, it delivers precision balance, reduced vibration, and long-term reliability ideal for both naturally aspirated and boosted Coyote builds.
Performance Highlights
- OEM-sized 6.78-inch damper preserves stock belt speeds and pulley alignment
- Dual 6-groove pulley system supports both accessory and A/C belt drives
- Lightweight aluminum hub reduces rotating mass and improves throttle response
- Advanced harmonic damping technology prevents crankshaft vibration and wear
- Perfect for high-RPM and forced-induction Coyote engines
- SFI 18.1 certified for motorsport-approved strength and safety
- Fully rebuildable for long service life
Quick Specs
- Outer Diameter: 6.78 inches
- Material: Aluminum
- Pulley Type: Dual 6-Groove (Accessory + A/C)
- Hub Material: Aluminum
- Size: OEM Diameter
- Certification: SFI 18.1
- Applications: 20112016 Ford Mustang Coyote 5.0L
- Part Number: ATI918047A
Why Choose the ATI 6.78in Dual 6-Groove Super Damper?
The ATI918047A delivers the perfect balance between OEM fitment and professional-grade damping performance. The dual 6-rib pulley layout supports both accessory and A/C systems without altering belt speeds, while ATIs precision engineering eliminates harmful harmonics that rob power and damage bearings. Whether your Coyote is naturally aspirated or boosted, this damper offers the vibration control, durability, and balance demanded by serious performance builds.
Frequently Asked Questions
Is this damper a direct OEM replacement?
Yes. The ATI918047A fits directly on 20112016 Ford Coyote 5.0L engines and retains all OEM pulley alignments and accessory drives.
Whats the benefit of a dual 6-groove design?
It allows separate belt drives for accessories and A/C systems, providing better belt traction, balance, and load control in high-performance setups.
Does this damper work with supercharged applications?
Yes. Its SFI 18.1 certification and strong aluminum hub make it ideal for both naturally aspirated and forced-induction builds.
Will this change my accessory or A/C speeds?
No. This damper is OEM-sized and maintains factory pulley ratios for both belts.
Vehicle Fitment
- 2011 Ford Mustang GT 5.0L Coyote
- 2012 Ford Mustang GT 5.0L Coyote
- 2013 Ford Mustang GT 5.0L Coyote
- 2014 Ford Mustang GT 5.0L Coyote
- 2015 Ford Mustang GT 5.0L Coyote
- 2016 Ford Mustang GT 5.0L Coyote
Contact Beefcake Racing
Beefcake Racing is your go-to source for ATI Super Dampers and Coyote performance upgrades. For expert advice or to place an order, email sales@beefcakeracing.com or call 1-855-827-7223. Our team of enthusiasts can help you select the right damper for your build, whether its street or track.
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