Walker Products 350-34654 oxygen sensor for the 2019-2024 Nissan Altima 4-cylinder 2.0L, the 2019-2026 Altima 4-cylinder 2.5L and other vehicles measures the oxygen in the exhaust gas to show how efficiently the engine burns fuel. It is a narrow-band, 4-wire, direct-fit sensor for the downstream position.
- Made for its specific application and position on the vehicle, with the diagnostic feedback the ECU requires
- Electrodes made of a gas-permeable platinum layer
- Measures oxygen levels to help fine-tune the air-fuel mixture and fuel economy
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Monitors exhaust gases to help reduce pollutants
Quick facts
- Part: Walker Products 350-34654 oxygen sensor
- Fits: the 2019-2024 Nissan Altima 4-cylinder 2.0L, the 2019-2026 Altima 4-cylinder 2.5L and other vehicles
- Position: Downstream
- Condition: New
A failing sensor can show up as an engine that runs poorly, higher fuel use, more exhaust emissions or a lit malfunction indicator light. A damaged wiring harness or connector can be behind the same signs, so find the cause before buying. With the engine off, look the sensor, harness and connector over for physical damage.
Fits
A wide range of Nissan and Infiniti models are listed for this oxygen sensor, led by the 2020-2025 Nissan Sentra 4-cylinder 2.0L and the 2020 Nissan Pathfinder V6 3.5L. Each takes one, and this listing is a single sensor. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: Downstream
- Quantity per vehicle: 1
Build and materials
- Type: narrow-band, direct fit
- Wires: 4
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this oxygen sensor right for a 2020-2025 Nissan Sentra 4-cylinder 2.0L?
Yes. Walker Products 350-34654 is listed for the 2020-2025 Nissan Sentra 4-cylinder 2.0L, and each car takes one sensor.
Is this the right sensor for a 2019-2026 Nissan Altima 4-cylinder 2.5L?
Yes. Walker Products 350-34654 is listed for the 2019-2026 Altima 4-cylinder 2.5L and the 2019-2024 Altima 4-cylinder 2.0L, one sensor per car.
Is the Walker Products 350-34654 a narrow-band or wideband sensor?
Narrow-band. Walker Products 350-34654 is a 4-wire, direct-fit narrow-band oxygen sensor for the downstream position.
What does the platinum layer on this oxygen sensor do?
The electrodes are made of a gas-permeable platinum layer. A coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
Where do fault codes from a failing Walker Products oxygen sensor show up?
Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its associated systems. A malfunction indicator light can also come on.
