The ATI crankshaft damper for Chevy small-block and 90-degree V6 engines is a 6.325in steel, three-ring harmonic balancer with a C-bore front, sold as a single-piece unit. It controls crankshaft vibration while matching three-ring pulley layouts and C-bore front requirements, making it appropriate for standard small-block replacements where those features are needed.
ATI Damper - 6.325in - Steel - Chevy SB / 90 Deg V6 - C-Bore Front - 3 Ring - 1Pc