Ati Performance Harmonic Balancer - Serpentine Super Damper - 7.430 in OD - SFI 18.1 - AC Pulley - Aluminum / Steel - Black - Internal Balance - GM LS-Series - Each-918620--Notes: 8-Groove Pulley w/4 Groove A/C Pulley State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO