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 2500 HD Oxygen Sensors & Components

My Vehicle Change Vehicle
2021 GMC Sierra 2500 HD
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Engine & Drivetrain
  • Department
  • Part Type
  • Prices

4 products about 2021 GMC Sierra 2500 HD Oxygen Sensors & Components found

Sort by:
Recommended
Filter Results
Sort
View by
  • OEM 2021 GMC Sierra 2500 HD Lower Oxygen Sensor Diagram - 12670253
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Lower Oxygen Sensor

    PartNumber: 12670253
    $42.77 MSRP: $80.72
    You Save: $37.95 (48%)
    Product Specifications
    • Notes: 6.6 Liter Gas; Silverado, Sierra 2500 Hd; Gas; Rear
    • Location: Driver Side; Passenger Side
    • Other Names: Lower Oxygen Sensor, Oxygen Sensor
    • Item Dimensions: 0.2 x 1.7 x 1.2 inches
    • Item Weight: 7.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Lower Oxygen Sensor
    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 SENSOR ASM-NOX (POSN 2) Diagram - 12708006
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD SENSOR ASM-NOX (POSN 2)

    PartNumber: 12708006
    $170.28 MSRP: $321.30
    You Save: $151.02 (48%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, Sensors
    • Other Names: Lower Nox Sensor
    • Fitment Type: Direct Replacement
    • Replaces: 12695882
    • Part Description: 2021 GMC Sierra 2500 HD SENSOR ASM-NOX (POSN 2)
    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 Upper Nox Sensor Diagram - 12708005
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Upper Nox Sensor

    PartNumber: 12708005
    $172.89 MSRP: $326.22
    You Save: $153.33 (48%)
    Product Specifications
    • Notes: 6.6 Liter Diesel, Sensors
    • Other Names: Upper Nox Sensor
    • Fitment Type: Direct Replacement
    • Replaces: 12695881
    • Part Description: 2021 GMC Sierra 2500 HD Upper Nox Sensor
    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 Upper Oxygen Sensor Diagram - 12679885
    View Related Parts

    OEM (Genuine) 2021 GMC Sierra 2500 HD Upper Oxygen Sensor

    PartNumber: 12679885
    $49.22 MSRP: $89.10
    You Save: $39.88 (45%)
    Product Specifications
    • Notes: 6.6 Liter Gas; Silverado, Sierra 2500 Hd; Gas; Front
    • Location: Driver Side; Passenger Side
    • Other Names: Oxygen Sensor, Upper Oxygen Sensor
    • Item Dimensions: 8.4 x 3.2 x 3.2 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2021 GMC Sierra 2500 HD Upper Oxygen Sensor
    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