Search Bar
Search by Part Number, Part Name, or Vehicle
  • My Garage
  • Cart
  • OE Parts
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
  • Shop OE Parts
  • Shop By Category
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting

2021 GMC Sierra 3500 HD Junction Boxes

My Vehicle Change Vehicle
2021 GMC Sierra 3500 HD
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Fuses & Fuse Box
  • Department
  • Prices

5 Products found

Sort by:
Recommended
Filter Results
Sort
View by
  • OEM 2021 GMC Sierra 3500 HD Fuse & Relay Box Diagram - 84582038
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 84582038
    $95.77 MSRP: $152.03
    You Save: $56.26 (38%)
    Product Specifications
    • Notes: Instrument Panel, Passenger Side
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 12.1 x 9.4 x 5.5 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
  • OEM 2021 GMC Sierra 3500 HD Fuse & Relay Box Diagram - 84594609
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 84594609
    $154.94 MSRP: $246.04
    You Save: $91.10 (38%)
    Product Specifications
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 16.2 x 9.3 x 6.0 inches
    • Item Weight: 0.50 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 86771159
    • Part Description: 2021 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
  • OEM 2021 GMC Sierra 3500 HD Fuse & Relay Box Diagram - 84594610
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 84594610
    $183.82 MSRP: $291.78
    You Save: $107.96 (38%)
    Product Specifications
    • Other Names: Fuse & Relay Box
    • Fitment Type: Direct Replacement
    • Replaced by: 86771157
    • Part Description: 2021 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
  • OEM 2021 GMC Sierra 3500 HD Junction Block Diagram - 23355667
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Junction Block

    PartNumber: 23355667
    $49.23 MSRP: $78.17
    You Save: $28.94 (38%)
    Product Specifications
    • Other Names: Junction Block
    • Item Dimensions: 11.5 x 5.0 x 5.0 inches
    • Item Weight: 1.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaced by: 84596390
    • Part Description: 2021 GMC Sierra 3500 HD Junction Block
    More Info
  • OEM 2021 GMC Sierra 3500 HD Fuse & Relay Box Diagram - 84738241
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 84738241
    $47.14 MSRP: $74.86
    You Save: $27.72 (38%)
    Product Specifications
    • Notes: Engine Compartment, Accessory Fuse Block
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 5.8 x 5.5 x 3.2 inches
    • Item Weight: 1.00 Pounds
    • Replaces: 84385176
    • Part Description: 2021 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2021 GMC Sierra 3500 HD | AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS