Walker Products 250-24452 oxygen sensor for the 2002-2003 Nissan Altima 4-cylinder 2.5L and other vehicles measures the oxygen content of the exhaust gas. This Walker Products oxygen sensor is made for a specific application and fitment position, and it gives the ECU the diagnostic feedback it needs.
- Monitors the air-fuel ratio for combustion efficiency
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust gases
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- Oxygen readings let the air-fuel mixture be fine-tuned, which helps fuel economy
Quick facts
- Part: Walker Products 250-24452 oxygen sensor
- Fits: the 2002-2003 Nissan Altima 4-cylinder 2.5L and other vehicles
- Position: Upstream, downstream, upstream right, upstream rear, upstream front
- Condition: New
A failing sensor can make the engine run poorly, raise fuel consumption or exhaust emissions, or turn on the malfunction indicator light. Before you replace the sensor, rule out damage to its wiring harness and connector, which you can look over with the engine off and cool, because other faults can show up the same way. This listing is one sensor, and these vehicles take one per sensor position.
Fits
The 2002-2003 Nissan Altima 4-cylinder 2.5L, the 2002 Nissan Sentra 4-cylinder 1.8L and the 2002-2004 Sentra 4-cylinder 2.5L all take this direct-fit sensor. It is also an oxygen sensor for the 2003 Nissan Murano V6 3.5L, along with other vehicles. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Position: upstream, downstream, upstream right, upstream rear, upstream front
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Type: narrow-band, 4-wire, direct fit
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right O2 sensor for a 2002-2003 Nissan Altima 4-cylinder 2.5L?
Yes. Walker Products 250-24452 is listed for the 2002-2003 Nissan Altima 4-cylinder 2.5L, and the "Vehicles it fits" section shows the other models and engines it fits.
Does this Nissan Sentra oxygen sensor fit the 2002 Nissan Sentra 4-cylinder 1.8L?
Yes. Walker Products 250-24452 is listed for the 2002 Nissan Sentra 4-cylinder 1.8L and for the 2002-2004 Sentra 4-cylinder 2.5L.
What thread size does this oxygen sensor have?
This sensor has an M18 - 1.5 thread. It is a narrow-band, 4-wire design.
Can a worn narrow-band oxygen sensor turn on the check engine light?
It can. A failed sensor may light the malfunction indicator light, and it can also lead to rough running or higher fuel consumption. Newer vehicles may store a fault code in the ECU.
Is the platinum layer on this sensor's electrodes protected?
Yes. The electrodes are made of a gas-permeable platinum layer, and a coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates.
