ATI 918452 18% Over-Drive 7.48" Super Damper for 2009+ 5.7L / 6.4L HEMI

Vehicle Fitment

• 2009-2020 RAM / Dodge / Chrysler 5.7 L VVT HEMI
• 2009-2020 RAM / Dodge 392 (6.4 L) HEMI
• 2009 Durango 5.7 L VVT HEMI

Features

• 18% over-drive design to increase accessory / supercharger speed
• Reduces harmful torsional crankshaft vibrations
• SFI 18.1 certified for high-performance and racing use
• Laser-etched 360° timing marks for accurate ignition tuning
• Black zinc-chromate finish for corrosion resistance
• Rebuildable elastomer core for long-term serviceability
• High-inertia design for strong harmonic damping
• Internal balance configuration for Mopar Gen III HEMI engines

Specifications

• Part Number: **ATI 918452**
• Outer Diameter: ~ 7.48"
• Over-Drive: 18%
• SFI Rating: 18.1
• Groove Count: 8-rib
• Balance Type: Internal
• Material: Steel / Aluminum (hybrid shell)

Included Components

• 1x ATI 918452 Super Damper (8-rib, over-drive)

Product Description

The **ATI 918452 Super Damper** is a high-performance harmonic balancer engineered for modern Mopar HEMI V8 trucks and performance vehicles. With 18% over-drive, it accelerates accessories (or a supercharger) faster than stock, giving you a performance edge while managing crankshaft harmonics.

Built from a durable steel and aluminum shell with a tunable elastomer core, the damper is both strong and serviceable. It's SFI 18.1 certified for competition readiness and features laser-etched 360° degree markings to help with precise ignition timing.

Ideal for 2009+ 5.7 L VVT HEMI, 6.4 L 392 applications, or HEMI-powered Durangos, this damper helps improve torque response and reliability by efficiently dampening harmful vibrations. Whether you're building a street cruiser or a high-performance truck, the 918452 offers a race-tested solution that supports both daily driving and track use.