The ATI crankshaft damper is a 7.074-inch aluminum unit with seven grooves for Nissan VQ35HR and VQ37VHR V6 engines, specified with a 15% underdrive. It replaces the stock harmonic balancer to alter pulley ratios while maintaining crank vibration control and accessory drive geometry. Use it during engine service or when fitting underdrive pulley setups on these Nissan V6 engines.
ATI Damper - 7.074in - Alum - 7 Grv - Nissan V6 VQ35Hr VQ37VHR - 15 Percent Underdrive