ACDelco 38172 Professional Automatic Belt Tensioner and Flanged Pulley Assembly Ensures proper belt tension, alignment, and damping for superior performance GM # 89003343
2002-2016 LB7 LLY LBZ LMM LML Duramax
If you have a 2001 model year, please see part number GM #38136 / 88920936.
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California Residents: Prop 65 Warning
WARNING: Cancer and Reproductive Harm