Walker Products Oxygen Sensor P/N:350-34354
Walker Products 350-31028 oxygen sensor for the 1994-1997 Ford Aspire 4-cylinder 1.3L and other vehicles measures the oxygen in the exhaust gas. This upstream sensor passes that reading to the engine computer, which uses it to track combustion efficiency.
Rough running, higher fuel consumption or a lit malfunction indicator light can mean the sensor is worn, though damage to the wiring harness or the connector can also be behind those signs.
This sensor fits the 1994-1997 Ford Aspire 4-cylinder 1.3L and the 1989-1991 Mazda RX-7 1.3L, and each car takes one. This listing is a single sensor.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Does the Walker Products 350-31028 oxygen sensor fit the 1989-1991 Mazda RX-7 1.3L?
Yes. Walker Products 350-31028 is listed for the 1989-1991 Mazda RX-7 1.3L, and that car takes one sensor.
Is this Walker Products oxygen sensor an upstream sensor?
Yes. This Walker Products 350-31028 is listed for the upstream position, and it has an M18 - 1.5 thread.
What is the platinum layer on this oxygen sensor for?
The electrodes are coated with a gas-permeable platinum layer. The coating helps keep combustion residue and exhaust particulates from contaminating or eroding the electrode surfaces.
Can a failing oxygen sensor store a fault code?
Yes. Newer vehicles store fault codes in the ECU, and some of them relate to the affected sensor and its systems. A shop can read them.
Does the Walker 350-31028 sensor help with exhaust emissions?
It monitors the exhaust gases and helps reduce pollutants. Its oxygen readings also let the ECU track the air-fuel ratio.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.