ATI Damper - 6.78in - Alum - 6 Grv - 10 Percent UD - LS1/2/3/6 - 97-13 - Y Body - No A/C - 3 Ring

This is an ATI 6.78-inch aluminum crankshaft damper designed for LS1, LS2, LS3, and LS6 engines built between 1997 and 2013. It's specifically configured for Y-body applications without A/C and includes three rings for accessory drives, with six grooves total and a 10% underdrive pulley. A well-built damper is crucial for absorbing torsional vibrations from the crankshaft, which can otherwise lead to premature wear on your engine's internal components.

ATI dampers are known for their robust construction. This particular unit is made from aluminum for a lighter weight compared to steel alternatives, and its multi-ring design helps dissipate harmful vibrations effectively. The six grooves provide ample space for accessory belts, and the 10% underdrive pulley offers a slight improvement in accessory speed, which can be beneficial in performance applications while still maintaining functionality. This damper is a solid option for LS engine builds where reliability and vibration control are important.