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    Belt & Accessory Drive


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    LML|LGH Duramax Harmonic Balancer Fluidampr 830121
    LML|LGH Duramax Harmonic Balancer Fluidampr 830121 $574.82
    Fits: LML|LGH Duramax 2011-2016
    LML|L5P Duramax Serpentine Belt GM 12656797
    LML|L5P Duramax Serpentine Belt GM 12656797 $87.17
    Fits: LML|L5P Duramax 2015-2019
    LML|L|5P Duramax OE Smooth Idler Pulley GM 12611935
    LML|L|5P Duramax OE Smooth Idler Pulley GM 12611935 $79.55
    Fits: LML|L5P Duramax 2013-2023
    Duramax Power Belt Tensioner Alliant AP63449
    Duramax Power Belt Tensioner Alliant AP63449 $137.19
    Fits: Duramax 2002-2016
    2001-2023 Duramax Harmonic Balancer Washer ARP 200-8793
    2001-2023 Duramax Harmonic Balancer Washer ARP 200-8793 $10.35
    Fits: 2001-2023 Duramax
    Belt & Accessory Drive Parts for Your 2011-2016 LML Duramax Silverado & Sierra
    Keep your accessory drive system running smoothly with the right components for your LML Duramax. Shop a Fluidampr harmonic balancer for smoother engine operation, an OE serpentine belt and smooth idler pulley from GM correctly matched across the shared LML|L5P platform, and a power belt tensioner from Alliant Power. Complete the install with an ARP harmonic balancer washer for extra clamping security. Whether you're chasing a belt noise issue or replacing worn accessory drive components, these parts keep everything turning reliably.