Mazda 3 Emission Control Sensors
Emission control sensors are a popular pick among Mazda 3 owners here, covering model years 2004–2025 with options ranging from oxygen sensors and mass air flow sensors to air/fuel ratio, knock, and manifold absolute pressure sensors. Choose your model year above and this page keeps only the emission control sensors that fit your Mazda 3. Each listing is matched to our vehicle fitment data before it appears here.
NGK 24355 Air Fuel Ratio Sensor 5-Wire Heated Wideband AFR O2 Sensor
DENSO 234-5102 Air/Fuel Sensor 5-Wire Direct Fit Heated 30.47" Lead
NGK NTK 24442 Oxygen Sensor Heated Narrow Band 4-Wire M18x1.5 Direct Fit
What's here for your Mazda 3
- Oxygen sensors — direct-fit and OE replacement styles
- Mass air flow sensors — including remanufactured and new units
- Air/fuel ratio sensors — direct-fit replacements for the exhaust manifold and bung positions
- Ignition knock (detonation) sensors — OE-style replacements
- Manifold absolute pressure (MAP) sensors — direct-fit and universal options
The widest selection here comes from DENSO, Walker Products, Bosch, and Spectra, each offering a broad range of direct-fit and OE replacement parts across the full 2004–2025 model span. Other categories Mazda 3 owners shop for: Mazda 3 Springs and Suspension Parts, Mazda 3 Shocks and Struts and Mazda 3 Brake Rotors and Drums, or browse all Mazda 3 parts and accessories.