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ATI 7.425-inch steel crankshaft damper is built for 2020–2021 GM Duramax engines and supports both six- and eight-groove accessory drive configurations. It serves as a direct replacement balancer to maintain crank harmonic control and correct pulley alignment for specified Duramax applications. The steel construction and application-specific sizing address durability and fitment for these model years.
ATI Damper - 7.425In - Steel - 6 & 8 Grv - 20-21 GM Duramax
