Fluidampr 830111 External Balance Steel Black Zinc Finish O.D. 8-3/8 In. Performance Damper | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Harmonic Balancer Features: - Increase your Torque and Horsepower - Steel Material - Black Zinc Finish - Has Degree Markings - SFI 18.1 SFI Rating - External Engine Balance - Internally Balanced - Made in USA - Reduces Risk of Crankshift Failure Boost your Vehicle's Performance with Torque and Horsepower Using only three parts (a laser-welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two), SFI-approved Fluidampr harmonic dampers can control all crankshaft vibration--not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure. With the Harmonic Balancer you get the boost you need for your torque and horsepower giving you great reaction times for any racing event. Mounting hardware is not included with this product. Designed for Race Settings Boost your vehicle's performance with the Duramax Fluidampr Harmonic Balancer for around town, merging on the highway, or even in racing events. Installation this harmonic balancer is a breeze giving you the best race performance. This harmonic balancer has been certified with a SFI rating of 18.1 giving it a well rounded race quality to bring you vehicle up to it's competition. Enjoy the best quality with this product, for any race event, or driving to your next destination, Vehicle Fitment: 2006-2010 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.6L Duramax