Power adders, cams and higher RPM change how a Gen III Hemi crankshaft vibrates, and the stock elastomer damper was only tuned for the engine as delivered. This Fluidampr viscous damper controls torsional vibration across the entire RPM range, so it keeps protecting the crank however the build evolves.

Fluidampr 720361 Harmonic Balancer Features:

• Fits naturally aspirated 5.7L, 6.1L and 6.4L Gen III Hemi Dodge, Chrysler and Jeep cars and SUVs
• Removable 6.375 in., 6-rib serpentine aluminum pulley
• Pulley has three 3/8-16 holes on a 3.2 in. bolt circle for dry sump mandrels
• 7.250 in. outside diameter, 3.720 in. length, 1.475 in. bore
• Internally balanced
• RoHS black zinc damper with black anodized pulley
• 11.2 lbs total weight, 7.4 lbs rotating weight
• Viscous silicone design controls torsional vibration across the entire RPM range
• Helps reduce wear on critical engine parts and the risk of crankshaft failure
• Can free up torque and horsepower lost to crankshaft vibration
• Precision CNC-machined and balanced components
• No maintenance required
• SFI 18.1 certified