Walker Products 250-21011 oxygen sensor for the 1980 Volkswagen Jetta 4-cylinder 1.6L, the 1981-1984 Jetta 4-cylinder 1.7L, the 1984-1987 Jetta 4-cylinder 1.8L and other vehicles measures the oxygen content of the exhaust gas so the ECU can track the air-fuel ratio.
- Measures oxygen in the exhaust gas to monitor the air-fuel ratio for combustion efficiency
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates
- Electrodes made of a gas-permeable platinum layer
- Oxygen readings let the ECU fine-tune the air-fuel mixture, which helps support fuel economy
- Made for one specific application and position, with the diagnostic feedback the ECU needs
Quick facts
- Part: Walker Products 250-21011 oxygen sensor
- Fits: the 1980 Volkswagen Jetta 4-cylinder 1.6L, the 1981-1984 Jetta 4-cylinder 1.7L, the 1984-1987 Jetta 4-cylinder 1.8L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. A damaged wiring harness, a loose connector or an exhaust leak can be behind those signs too, so find the actual cause before you buy. The cars it fits take one sensor in the upstream position, and this listing is a single sensor.
Fits
This sensor is listed for a wide range of Volkswagen, Audi, Volvo, Subaru and Nissan models, including the 1985-1987 Volkswagen Golf 4-cylinder 1.8L and the 1990-1991 Nissan Stanza 4-cylinder 2.4L. If your car is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Sensor type: Narrow-band
- Electrodes: gas-permeable platinum layer
- Coating: on the electrode surfaces, against contamination and erosion
- Condition: New
Frequently Asked Questions
Is this oxygen sensor right for a 1984-1987 VW Jetta 4-cylinder 1.8L?
Yes. Walker Products 250-21011 is listed for the 1984-1987 Volkswagen Jetta 4-cylinder 1.8L and goes in the upstream position.
Is this a VW Golf oxygen sensor for 1985-1987 models with the 4-cylinder 1.8L?
Yes. Walker Products 250-21011 is listed for the 1985-1987 Volkswagen Golf 4-cylinder 1.8L as an upstream sensor, one per car.
Is the Walker Products oxygen sensor a narrow-band type?
Yes. This sensor is narrow-band, with electrodes made of a gas-permeable platinum layer. It threads in with an M18 - 1.5 thread.
What can a failing upstream oxygen sensor cause?
Rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light can be signs the sensor is failing.
What does the coating on this oxygen sensor do?
The coating on the electrode surfaces keeps combustion residue and particulates in the exhaust gases from contaminating or eroding them.
