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2021 GMC Sierra 2500 HD Serpentine Belt Drive Kit

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2021 GMC Sierra 2500 HD
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  • OEM 2021 GMC Sierra 2500 HD Belt Kit-A/C Compressor - 12658178
    OEM 2021 GMC Sierra 2500 HD Belt Kit-A/C Compressor Diagram - 12658178
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Belt Kit-A/C Compressor

    PartNumber: 12658178
    $43.31 MSRP: $94.33
    You Save: $51.02 (55%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 2500 Hd; Gas
    • Other Names: AC Belt
    • Item Dimensions: 10.1 x 9.6 x 3.6 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Belt Kit-A/C Compressor
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Module Bolt - 11588725
    OEM 2021 GMC Sierra 2500 HD Module Bolt Diagram - 11588725
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Module Bolt

    PartNumber: 11588725
    $4.88 MSRP: $8.05
    You Save: $3.17 (40%)
    Product Specifications
    • Notes: 6.6 Liter Gas, Short
    • Item Dimensions: 2.2 x 1.2 x 0.8 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Module Bolt
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Serpentine Idler Pulley - 12611935
    OEM 2021 GMC Sierra 2500 HD Serpentine Idler Pulley Diagram - 12611935
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Idler Pulley

    PartNumber: 12611935
    $56.38 MSRP: $106.39
    You Save: $50.01 (48%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Type 1; 6.6 Liter Diesel, W/Dual Alternators, Type 1; Silverado, Sierra 2500 Hd; Dual Alternator; Diesel; Lower; Right;Silverado, Sierra 2500 Hd; Dual Alternator; Diesel; Upper;Silverado, Sierra 2500 Hd; Single Alternator; Diesel; Lower;Silverado, Sierra 2500 Hd; Single Alternator; Diesel; Upper
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 4.3 x 4.4 x 4.2 inches
    • Item Weight: 0.90 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12581700
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Denali Ultimate, Pro, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
  • OEM 2021 GMC Sierra 2500 HD Serpentine Idler Pulley - 12695659
    OEM 2021 GMC Sierra 2500 HD Serpentine Idler Pulley Diagram - 12695659
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Idler Pulley

    PartNumber: 12695659
    $23.27 MSRP: $43.93
    You Save: $20.66 (48%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators, Smooth; Silverado, Sierra 2500 Hd; Dual Alternator; Gas; Upper;Silverado, Sierra 2500 Hd; Single Alternator; Gas
    • Location: Passenger Side
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 5.0 x 4.6 x 4.4 inches
    • Item Weight: 0.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12605492
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner - 12654271
    OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner Diagram - 12654271
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Tensioner

    PartNumber: 12654271
    $46.59 MSRP: $77.14
    You Save: $30.55 (40%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 2500 Hd; Gas
    • Other Names: Belt Tensioner, Serpentine Tensioner
    • Item Dimensions: 8.2 x 6.1 x 5.1 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Idler Pulley - 12626075
    OEM 2021 GMC Sierra 2500 HD Idler Pulley Diagram - 12626075
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Idler Pulley

    PartNumber: 12626075
    $47.56 MSRP: $89.76
    You Save: $42.20 (48%)
    Product Specifications
    • Other Names: Idler Pulley
    • Item Dimensions: 4.3 x 4.4 x 4.2 inches
    • Item Weight: 0.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12728996
    • Part Description: 2021 GMC Sierra 2500 HD Idler Pulley
    More Info
  • OEM 2021 GMC Sierra 2500 HD Idler Pulley - 12675951
    OEM 2021 GMC Sierra 2500 HD Idler Pulley Diagram - 12675951
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Idler Pulley

    PartNumber: 12675951
    $57.98 MSRP: $109.43
    You Save: $51.45 (48%)
    Product Specifications
    • Other Names: Idler Pulley
    • Item Dimensions: 3.2 x 3.2 x 3.1 inches
    • Item Weight: 1.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12729057
    • Part Description: 2021 GMC Sierra 2500 HD Idler Pulley
    More Info
  • OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner - 12673657
    OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner Diagram - 12673657
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Tensioner

    PartNumber: 12673657
    $45.50 MSRP: $75.28
    You Save: $29.78 (40%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Serpentine Belt; 6.6 Liter Diesel, W/Dual Alternators, Serpentine Belt; Silverado, Sierra 2500 Hd; Diesel; Main
    • Other Names: Belt Tensioner, Serpentine Tensioner
    • Item Dimensions: 8.2 x 5.2 x 5.1 inches
    • Item Weight: 2.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
  • OEM 2021 GMC Sierra 2500 HD Serpentine Belt - 12708561
    OEM 2021 GMC Sierra 2500 HD Serpentine Belt Diagram - 12708561
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Belt

    PartNumber: 12708561
    $25.98 MSRP: $47.05
    You Save: $21.07 (45%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators; Silverado, Sierra 2500 Hd; Diesel; Single Alternator
    • Other Names: Serpentine Belt
    • Fitment Type: Direct Replacement
    • Replaces: 12675892
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
  • OEM 2021 GMC Sierra 2500 HD Serpentine Belt - 12626077
    OEM 2021 GMC Sierra 2500 HD Serpentine Belt Diagram - 12626077
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Belt

    PartNumber: 12626077
    $22.66 MSRP: $41.04
    You Save: $18.38 (45%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; Silverado, Sierra 2500 Hd; Gas; Single Alternator
    • Other Names: Serpentine Belt
    • Item Dimensions: 40.2 x 3.2 x 1.1 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12732503
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Serpentine Belt - 12654273
    OEM 2021 GMC Sierra 2500 HD Serpentine Belt Diagram - 12654273
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Belt

    PartNumber: 12654273
    $23.43 MSRP: $42.42
    You Save: $18.99 (45%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 2500 Hd; Gas; Dual Alternator
    • Other Names: Serpentine Belt
    • Item Dimensions: 28.0 x 3.4 x 0.9 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12732504
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Serpentine Belt - 12675892
    OEM 2021 GMC Sierra 2500 HD Serpentine Belt Diagram - 12675892
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Belt

    PartNumber: 12675892
    $24.92 MSRP: $47.05
    You Save: $22.13 (48%)
    Product Specifications
    • Other Names: Serpentine Belt
    • Item Dimensions: 6.1 x 3.4 x 1.1 inches
    • Item Weight: 0.70 Pounds
    • Replaced by: 12708561
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Belt
    More Info
  • OEM 2021 GMC Sierra 2500 HD Serpentine Belt - 12675893
    OEM 2021 GMC Sierra 2500 HD Serpentine Belt Diagram - 12675893
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Belt

    PartNumber: 12675893
    $41.84 MSRP: $86.69
    You Save: $44.85 (52%)
    Product Specifications
    • Other Names: Serpentine Belt
    • Item Dimensions: 6.2 x 3.4 x 1.0 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12732705
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Belt
    More Info
  • OEM 2021 GMC Sierra 2500 HD Water Pump Belt - 12675896
    OEM 2021 GMC Sierra 2500 HD Water Pump Belt Diagram - 12675896
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    OEM (Genuine) 2021 GMC Sierra 2500 HD Water Pump Belt

    PartNumber: 12675896
    $22.48 MSRP: $40.69
    You Save: $18.21 (45%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators; 6.6 Liter Diesel, W/Dual Alternators; Silverado, Sierra 2500 Hd; Diesel
    • Other Names: Drive Belt, Water Pump Belt
    • Item Dimensions: 6.3 x 3.4 x 1.0 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12732707
    • Part Description: 2021 GMC Sierra 2500 HD Water Pump Belt
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
  • OEM 2021 GMC Sierra 2500 HD Idler Pulley - 12676231
    OEM 2021 GMC Sierra 2500 HD Idler Pulley Diagram - 12676231
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Idler Pulley

    PartNumber: 12676231
    $89.53 MSRP: $168.94
    You Save: $79.41 (48%)
    Product Specifications
    • Notes: 6.6 Liter Gas, W/Dual Alternators, Smooth; Silverado, Sierra 2500 Hd; Dual Alternator; Gas; Lower; Smooth
    • Location: Driver Side
    • Other Names: Idler Pulley
    • Item Dimensions: 3.2 x 3.1 x 3.2 inches
    • Item Weight: 1.30 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12729056
    • Part Description: 2021 GMC Sierra 2500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 2500 HD Idler Pulley - 12678981
    OEM 2021 GMC Sierra 2500 HD Idler Pulley Diagram - 12678981
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Idler Pulley

    PartNumber: 12678981
    $97.25 MSRP: $183.51
    You Save: $86.26 (48%)
    Product Specifications
    • Other Names: Idler Pulley
    • Item Dimensions: 4.8 x 4.6 x 4.5 inches
    • Item Weight: 3.10 Pounds
    • Replaced by: 12708716
    • Part Description: 2021 GMC Sierra 2500 HD Idler Pulley
    More Info
  • OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner - 12700588
    OEM 2021 GMC Sierra 2500 HD Serpentine Tensioner Diagram - 12700588
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Serpentine Tensioner

    PartNumber: 12700588
    $42.69 MSRP: $70.66
    You Save: $27.97 (40%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Drive Belt; 6.6 Liter Diesel, W/Dual Alternators, Drive Belt; Silverado, Sierra 2500 Hd; Diesel; Accessory
    • Other Names: Belt Tensioner, Serpentine Tensioner
    • Item Dimensions: 6.8 x 4.3 x 4.2 inches
    • Item Weight: 2.10 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 12735533
    • Part Description: 2021 GMC Sierra 2500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
  • OEM 2021 GMC Sierra 2500 HD Idler Pulley - 12708716
    OEM 2021 GMC Sierra 2500 HD Idler Pulley Diagram - 12708716
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Idler Pulley

    PartNumber: 12708716
    $97.25 MSRP: $183.51
    You Save: $86.26 (48%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Type 2; 6.6 Liter Diesel, W/Dual Alternators, Type 2; Silverado, Sierra 2500 Hd; Dual Alternator; Diesel; Lower; Center;Silverado, Sierra 2500 Hd; Single Alternator; Diesel; Center
    • Location: Passenger Side
    • Other Names: Idler Pulley
    • Fitment Type: Direct Replacement
    • Replaces: 12678981
    • Part Description: 2021 GMC Sierra 2500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 2500 HD | AT4, AT4X, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL