The ATI crankshaft damper is a 5.67-inch aluminum balancer with a 6/4 groove layout and 25 percent underdrive, listed for LS1/LS2/LS3/LS6 engines covering 1997–2013 Y-body applications in a three-ring design without A/C. Its compact sizing and groove configuration provide the accessory spacing and fitment needed for replacement across the noted LS model years.
ATI Damper - 5.67in - Alum - 6/4 Grv - 25 Percent UD - No A/C - LS1/2/3/6 - 97-13 Y Body - 3 Ring