Walker Products 250-21013 oxygen sensor for the 1994-1996 Nissan Altima 4-cylinder 2.4L and other vehicles reads the oxygen in the exhaust gas to show how efficiently the engine burns fuel. This Walker Products oxygen sensor is a narrow-band direct-fit design, made for its specific application and fitment position so it gives the ECU the diagnostic feedback it expects.
- Electrodes made of a gas-permeable platinum layer
- Monitors exhaust gases to help reduce pollutants
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust
- Determines the oxygen content of the exhaust gas and monitors the air-fuel ratio for combustion efficiency
- Measures oxygen levels so the air-fuel ratio can be fine-tuned for fuel economy
Quick facts
- Part: Walker Products 250-21013 oxygen sensor
- Fits: 1994-1996 Nissan Altima 4-cylinder 2.4L and other vehicles
- Position: Upstream, downstream
- Condition: New
A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a lit malfunction indicator light. The wiring harness or connector can be behind those signs too, so look them over for physical damage with the engine off before you replace the sensor.
Fits
This sensor is listed for a wide range of models, mostly Nissan, among them the 1989-1996 Nissan Sentra 4-cylinder 1.6L and the 1987 Nissan Pathfinder 4-cylinder 2.4L. Driving something else? Look up your year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream, downstream
- Quantity per application: 1
Build and materials
- Type: Narrow-band
- Electrodes: gas-permeable platinum layer
- Condition: New
In the box
One oxygen sensor. The fitment calls for one per application.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does Walker Products 250-21013 work as a Nissan Sentra oxygen sensor on the 1989-1996 Sentra 4-cylinder 1.6L?
Yes. Walker Products 250-21013 is listed for the 1989-1996 Nissan Sentra 4-cylinder 1.6L, and the fitment calls for one sensor per car.
Is this a Nissan Pathfinder oxygen sensor for the 1987 Pathfinder 4-cylinder 2.4L?
Yes. The 1987 Nissan Pathfinder 4-cylinder 2.4L is on the fitment list, and this listing is one sensor for it.
Does this oxygen sensor go in the upstream or the downstream position?
The catalog lists both upstream and downstream positions for Walker Products 250-21013, and each application takes one sensor.
Is the Walker Products 250-21013 a narrow-band or wide-band sensor?
It is a narrow-band oxygen sensor. Its electrodes are made of a gas-permeable platinum layer, with a coating over the electrode surfaces.
Will a newer car store a trouble code if this oxygen sensor fails?
Newer vehicles store fault codes in the ECU, and some of those codes relate to the affected sensor and its associated systems. A shop can read them to help narrow down the cause.
