ATI 918432 Super Damper 5% Overdrive for 2005-2010 HEMI 6.1L SRT8

Vehicle Fitment

• 2005-2010 Dodge Challenger SRT8 (6.1L HEMI, RWD)
• 2006-2010 Dodge Charger SRT8 (6.1L HEMI, RWD)
• 2005-2008 Dodge Magnum SRT8 (6.1L HEMI, RWD)
• 2005-2010 Chrysler 300C SRT8 (6.1L HEMI, RWD)
• 2006-2010 Jeep Grand Cherokee SRT8 (6.1L HEMI, 4WD)

Features

• 5% overdrive reduces accessory speed for improved component longevity
• Aluminum shell with steel inertia weight ensures strength and balance
• Laser-etched 360° timing marks for precise ignition tuning
• Eliminates torsional crankshaft vibrations across the RPM range
• Black zinc chromate finish for corrosion resistance
• SFI 18.1 certified for street and racing use
• 2-ring design with O-ring grooves for sealed inertia assembly
• Rebuildable and tunable for high-performance engine builds

Specifications

• Outside Diameter: 6.78 inches
• Drive Ratio: 5% overdrive
• Material: Aluminum shell with steel inertia weight
• Timing Marks: 360° laser-etched
• SFI Certification: 18.1
• Inertia Weight: ~4.5 lbs; Hub weight: ~2.4 lbs :contentReference[oaicite:1]{index=1}
• Black zinc chromate finish

Included Components

• 1x ATI 918432 Super Damper Harmonic Balancer
• Note: Mounting hardware not included

Product Description

The ATI 918432 Super Damper is a high-performance crankshaft damper designed specifically for HEMI 6.1L SRT8 engines from 2005-2010. The 5% overdrive pulley slows accessory rotation, helping reduce wear on belts, pumps, and alternators under high loads - a performance and reliability advantage on upgraded powerplants.

Crafted with an aluminum shell and steel inertia weight, and finished in durable black zinc chromate, this damper features 360° laser-etched timing marks for precision tuning. It complies with stringent SFI 18.1 safety standards and is engineered to neutralize crankshaft harmonics across all RPM. The two-ring inertia design with O-ring grooves ensures a sealed, long-lasting assembly suitable for street or drag racing applications. Installation hardware is not included.

Fitment confirmation relies on respected vendor listings and manufacturer compatibility charts. Fitment is confirmed through 2010; 2011+ coverage is unconfirmed at this time.