he High-Performance Diesel Damper was invented by Fluidampr with the introduction of the viscous diesel damper. No other engine damper controls torsional vibrations like the Fluidampr 920301 for the Cummins 5.9L. The Dodge Ram Harmonic Damper will protect your engine from destructive torsional vibrations at all RPMs, Power Levels, and Frequency Ranges. So if you're interested in gaining more dependability, power, and torque from your Cummins 5.9L diesel look to Fluidampr for the 920301 High Performance Diesel Damper. Owners of 2003 to 2007 Dodge Ram 2500 and 3500 Series 5.9L Cummins Diesel trucks have noticed these benefits when the 920301 Fluidampr harmonic balancers are installed: Smooths out the chatter of the diesel engine. Reduces engine vibration in the 2000 to 3000 rpm band. A damper provides a dramatic reduction in noise levels with the manual transmission. This damper allows smoother engine operation at idle. A Viscous Damper Increases both Horsepower and Torque. Controls destructive harmonic vibrations. Designed for Stock to Extreme Powered 5.9L engines. More Stable Valve-train Operation Less wear on the Main Bearings Less Wear On The Timing Gear The Fluidampr 920301 Dodge Harmonic Damper Specifications: Material = Steel Coated in a Black Zinc Finish Outside Diameter of 9-1/4." The unit weighs 25 pounds. Balance = Internal Safety Rating: SFI 18.1 Approved for Race use! The Fluidampr 920301 High Performance Diesel Damperis MADE IN THE USA engine: 5.9L Cummins Make: : Cummins | Dodge | Ram Model: 2500 | 3500 Year: 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 Product Application: 2003 to 2007 Dodge Ram 2500 and 3500 5.9L Cummins Diesels. Height: 8 Width: 12 Manufacturer: Fluidampr Product Note: Fluidampr Harmonic Fluid Damper is designed to control these destructive vibrations on a stock or highly modified 24 valve Cummins 5.9L diesel engine.