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The ATI crankshaft damper for Chevy 454 external-balance V8s is a 7.074in steel harmonic balancer built for three-ring pulley setups. It reduces crankshaft vibration and supports accessory drive alignment for externally balanced big-block Chevy engines. This single damper entry clarifies fit and ring count for builders replacing or upgrading the front crank pulley assembly.
ATI Shell Assy - 7.074 - Steel - Chevy 454 Ext Bal - 3 Ring
