Walker Products 250-23131 oxygen sensor for the 2002-2004 Nissan Altima V6 3.5L and other vehicles measures the oxygen content of the exhaust gas. That reading tells the ECU how efficiently combustion is running.
- Electrodes with a gas-permeable platinum layer
- Monitors exhaust gases and helps reduce pollutants
- Measures oxygen levels to help fine-tune the air-fuel mixture and fuel economy
- Coating protects electrode surfaces from combustion residue and exhaust particulates
- Made for its specific application and position, with the diagnostic feedback the ECU needs
Quick facts
- Part: Walker Products 250-23131 oxygen sensor
- Fits: 2002-2004 Nissan Altima V6 3.5L and other vehicles
- Position: Upstream, upstream left, upstream right, upstream rear, upstream front
- Condition: New
A failing oxygen sensor can make the engine run poorly, raise fuel consumption or light the malfunction indicator light. Before you replace the sensor, rule out physical damage to its wiring harness and connector, and read the stored fault codes, since some relate to the sensor and others to its associated systems.
Fits
This listing is one oxygen sensor, and the quantity per application is one. It is listed for a wide range of Nissan and Infiniti models, among them the 2002-2004 Nissan Altima V6 3.5L and the 2001 Nissan Sentra 4-cylinder 1.8L, plus an oxygen sensor for the 2001-2002 Nissan Pathfinder V6 3.5L. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: upstream, upstream left, upstream right, upstream rear, upstream front
- Quantity per application: 1
- Thread: M18 - 1.5
- Wires: 3
Build and materials
- Type: narrow-band, direct fit
- Electrodes: gas-permeable platinum layer
- Condition: new
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Will this O2 sensor fit a 2002-2004 Nissan Altima V6 3.5L?
Yes. Walker Products 250-23131 is listed for the 2002-2004 Nissan Altima V6 3.5L, with a quantity of one per application. Open the "Vehicles it fits" section to check other models and engines.
Is this the Nissan Sentra oxygen sensor for a 2001 4-cylinder 1.8L?
Yes. This oxygen sensor is listed for the 2001 Nissan Sentra 4-cylinder 1.8L, and the quantity is one.
What does this Walker Products oxygen sensor monitor?
Walker Products 250-23131 determines the oxygen content of the exhaust gas and monitors the air-fuel ratio for combustion efficiency. Its electrodes have a gas-permeable platinum layer.
What thread size and wire count does this oxygen sensor have?
This narrow-band oxygen sensor has an M18 - 1.5 thread and 3 wires.
Can a worn narrow-band oxygen sensor trigger a warning light?
Yes. A failing sensor can show up as higher exhaust emissions or a lit malfunction indicator light. A shop can test the sensor and its circuit.
