Fluidampr 03-09 Dodge Cummins 5.9L Steel Internally Balanced DamperSerious power requires a serious damper. Protect your truck? s engine with the technology preferred by heavy duty diesel OEMs. Superior viscous damper design controls harmful torsional vibration across the entire rpm range. Reduce wear on engine components. Reduce risk of crankshaft failure. Improve timing. Unleash lost torque and horsepower. Competition built precision CNC machined and balanced high grade steel components. Corrosion resistant black