The Walker Products Oxygen Sensor (part number 250-54127) is a direct-fit replacement for 2019-2026 INFINITI and Nissan vehicles with 2.0L, 3.5L, and 5.6L engines. The oxygen sensor measures combustion efficiency based off the amount of oxygen in the exhaust gas.
Features:
- Coated in with electrodes made of a gas-permeable platinum layer.
- Coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.
- Monitors exhaust gases and reduces pollutants for a cleaner environment.
- Measures oxygen levels to fine-tune air-fuel mixture, improving fuel economy and saving costs.
- Determines the oxygen content of the exhaust gas, monitoring the air fuel ratio for combustion efficiency.
Specifications:
| Sensor Type | Wide-Band |
| Number of Wires | 5 |
| Number of Terminals | 4 |
| Connector Type | Pin |
| Connector Shape | Rectangle |
| Connector Gender | Male |
| Terminal Gender | Female |
| Thread Size | M18 - 1.5 |
| Hex Size (mm) | 22 mm |
| Heated | Yes |
| Fit Type | Direct Fit |
Fits: 2019-2026 INFINITI and Nissan models including QX50, QX55, QX60, QX80, Altima, Armada, Maxima, Murano and more — 2.0L, 3.5L, and 5.6L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
WARNING: This product can expose you to chemicals, including Nickel and Nickel Alloyed Stainless Steel, which are known to the State of California to cause cancer or birth defects or other reproductive harm.
