GMC Sierra 2500 HD Emission Control Sensors
This page brings together emission control sensors for the GMC Sierra 2500 HD, covering model years 2001–2026. The range includes oxygen sensors, mass air flow sensors, throttle position sensors, manifold absolute pressure sensors, and knock sensors in direct-fit, OE replacement, and remanufactured forms. Select your year above and we'll show only the emission control sensors that fit your GMC Sierra 2500 HD. Fitment is checked against our vehicle data for every part listed.
Representative Photo, actual item may vary
NGK 21539 NTK Oxygen Sensor, Heated 4-Wire Narrow Band O2 Sensor
NGK 21066 Oxygen Sensor Heated 4-Wire Narrow Band M18x1.5 Direct Fit
NGK 21546 Oxygen Sensor O2 Sensor 4-Wire Heated Narrow Band 18mm
NGK 21514 Oxygen Sensor 4-Wire Heated Narrow-Band M18x1.5 Direct Fit
NGK 21513 Oxygen Sensor 4-Wire Heated 18mm Thread OE Identical O2 Sensor
NGK 21548 NTK OE Identical Oxygen Sensor 4-Wire Heated M18 x 1.5
Representative Photo, actual item may vary
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What's here for your GMC Sierra 2500 HD
- Oxygen Sensors — direct-fit and universal styles
- Mass Air Flow Sensors — OE replacement and remanufactured units
- Throttle Position Sensors — direct-fit and kit options
- Manifold Absolute Pressure (MAP) Sensors — manifold and standalone configurations
- Ignition Knock (Detonation) Sensors — direct-fit replacements
The widest selection here comes from Walker Products, Standard Motor Products, Delphi, and Holstein, spanning a broad range of fitments across the Sierra 2500 HD's model history. Other categories GMC Sierra 2500 HD owners shop for: GMC Sierra 2500 HD Shocks and Struts, GMC Sierra 2500 HD Exterior Lights and GMC Sierra 2500 HD Springs and Suspension Parts, or browse all GMC Sierra 2500 HD parts and accessories.