ATI PERFORMANCE SBC 6.780 Harmonic Damper - SFI 917276

ATI PERFORMANCE Harmonic Balancer - Serpentine Super Damper - 6.780 in OD - SFI 18.1 - AC Pulley - Aluminum / Steel - Black - Internal Balance - GM LS-Series - Each.
ALUMINUM BALANCER FOR LS1, 6-GROOVE SERPENTINE, F-BODY. 10% UNDERDRIVE WITH AC PULLEY. ALSO FITS 2005-06 GTO ACCORDING TO ATI.