Contact Us Live Chat or 1-888-220-8330
Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Login/Register My Account Track Order Help Center Contact Us
Replacement and OEM Parts for 2021 Chevrolet Silverado 3500 HD Serpentine Belt Drive Kit

2021 Chevrolet Silverado 3500 HD Serpentine Belt Drive Kit

My Vehicle Change Vehicle
2021 Chevrolet Silverado 3500 HD
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Timing Belts, Chains, Cams & Related Parts
  • Department
  • Prices

18 Products found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM 2021 Chevrolet Silverado 3500 HD Belt Kit-A/C Compressor Diagram - 12658178
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Belt Kit-A/C Compressor

    PartNumber: 12658178
    OEM 2021 Chevrolet Silverado 3500 HD Belt Kit-A/C Compressor - 12658178
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Belt Kit-A/C Compressor
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $54.14 MSRP: $89.84
    You Save: $35.70 (40%)
  • OEM 2021 Chevrolet Silverado 3500 HD Module Bolt Diagram - 11588725
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Module Bolt

    PartNumber: 11588725
    OEM 2021 Chevrolet Silverado 3500 HD Module Bolt - 11588725
    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 Chevrolet Silverado 3500 HD Module Bolt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $4.72 MSRP: $7.47
    You Save: $2.75 (37%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley Diagram - 12611935
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley

    PartNumber: 12611935
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley - 12611935
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Type 1; 6.6 Liter Diesel, W/Dual Alternators, Type 1; Silverado, Sierra 3500 Hd; Dual Alternator; Diesel; Lower; Right;Silverado, Sierra 3500 Hd; Dual Alternator; Diesel; Upper;Silverado, Sierra 3500 Hd; Single Alternator; Diesel; Lower;Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $54.11 MSRP: $102.11
    You Save: $48.00 (48%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley Diagram - 12695659
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley

    PartNumber: 12695659
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Idler Pulley - 12695659
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators, Smooth; Silverado, Sierra 3500 Hd; Dual Alternator; Gas; Upper;Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $22.65 MSRP: $42.77
    You Save: $20.12 (48%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner Diagram - 12654271
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner

    PartNumber: 12654271
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner - 12654271
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $43.20 MSRP: $71.52
    You Save: $28.32 (40%)
  • OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley Diagram - 12626075
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Idler Pulley

    PartNumber: 12626075
    OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley - 12626075
    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 Chevrolet Silverado 3500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $46.31 MSRP: $87.40
    You Save: $41.09 (48%)
  • OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley Diagram - 12675951
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Idler Pulley

    PartNumber: 12675951
    OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley - 12675951
    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 Chevrolet Silverado 3500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $58.59 MSRP: $106.55
    You Save: $47.96 (46%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner Diagram - 12673657
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner

    PartNumber: 12673657
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner - 12673657
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Serpentine Belt; 6.6 Liter Diesel, W/Dual Alternators, Serpentine Belt; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $44.30 MSRP: $73.30
    You Save: $29.00 (40%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt Diagram - 12708561
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Belt

    PartNumber: 12708561
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt - 12708561
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators; Silverado, Sierra 3500 Hd; Diesel; Single Alternator
    • Other Names: Serpentine Belt
    • Fitment Type: Direct Replacement
    • Replaces: 12675892
    • Part Description: 2021 Chevrolet Silverado 3500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $24.70 MSRP: $44.73
    You Save: $20.03 (45%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt Diagram - 12626077
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Belt

    PartNumber: 12626077
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt - 12626077
    Product Specifications
    • Notes: 6.6 Liter Gas, W/O Dual Alternators; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $19.29 MSRP: $34.90
    You Save: $15.61 (45%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt Diagram - 12654273
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Belt

    PartNumber: 12654273
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt - 12654273
    Product Specifications
    • Notes: 6.6 Liter Gas, W/Dual Alternators; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $22.27 MSRP: $40.32
    You Save: $18.05 (45%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt Diagram - 12675892
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Belt

    PartNumber: 12675892
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt - 12675892
    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 Chevrolet Silverado 3500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $24.70 MSRP: $44.73
    You Save: $20.03 (45%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt Diagram - 12675893
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Belt

    PartNumber: 12675893
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Belt - 12675893
    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 Chevrolet Silverado 3500 HD Serpentine Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $39.77 MSRP: $82.41
    You Save: $42.64 (52%)
  • OEM 2021 Chevrolet Silverado 3500 HD Water Pump Belt Diagram - 12675896
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Water Pump Belt

    PartNumber: 12675896
    OEM 2021 Chevrolet Silverado 3500 HD Water Pump Belt - 12675896
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators; 6.6 Liter Diesel, W/Dual Alternators; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Water Pump Belt
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $21.36 MSRP: $38.67
    You Save: $17.31 (45%)
  • OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley Diagram - 12676231
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Idler Pulley

    PartNumber: 12676231
    OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley - 12676231
    Product Specifications
    • Notes: 6.6 Liter Gas, W/Dual Alternators, Smooth; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L GAS
    $87.18 MSRP: $164.50
    You Save: $77.32 (48%)
  • OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley Diagram - 12678981
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Idler Pulley

    PartNumber: 12678981
    OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley - 12678981
    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 Chevrolet Silverado 3500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $90.19 MSRP: $170.19
    You Save: $80.00 (48%)
  • OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner Diagram - 12700588
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner

    PartNumber: 12700588
    OEM 2021 Chevrolet Silverado 3500 HD Serpentine Tensioner - 12700588
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Drive Belt; 6.6 Liter Diesel, W/Dual Alternators, Drive Belt; Silverado, Sierra 3500 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 Chevrolet Silverado 3500 HD Serpentine Tensioner
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L GAS
    $39.58 MSRP: $65.52
    You Save: $25.94 (40%)
  • OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley Diagram - 12708716
    View Related Parts

    OEM (Genuine) 2021 Chevrolet Silverado 3500 HD Idler Pulley

    PartNumber: 12708716
    OEM 2021 Chevrolet Silverado 3500 HD Idler Pulley - 12708716
    Product Specifications
    • Notes: 6.6 Liter Diesel, W/O Dual Alternators, Type 2; 6.6 Liter Diesel, W/Dual Alternators, Type 2; Silverado, Sierra 3500 Hd; Dual Alternator; Diesel; Lower; Center;Silverado, Sierra 3500 Hd; Single Alternator; Diesel; Center
    • Location: Passenger Side
    • Other Names: Idler Pulley
    • Fitment Type: Direct Replacement
    • Replaces: 12678981
    • Part Description: 2021 Chevrolet Silverado 3500 HD Idler Pulley
    More Info
    Vehicle Fitment
    • 2021 Chevrolet Silverado 3500 HD | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
    $90.19 MSRP: $170.19
    You Save: $80.00 (48%)