Walker Products Oxygen Sensor P/N:350-64025
Walker Products 350-33019 oxygen sensor for the 1987-1990 Toyota Supra 6-cylinder 3.0L measures the oxygen in the exhaust gas to track combustion efficiency. This upstream Walker Products oxygen sensor is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback that system needs.
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 the connector can be behind the same signs, so look both over for physical damage before you replace the sensor.
This sensor is a direct-fit replacement for the 1987-1990 Toyota Supra 6-cylinder 3.0L (L6-3.0L). That engine takes one upstream sensor, and this listing is a single sensor.
Fit and size
Build and materials
Is 350-33019 the right Supra oxygen sensor for the 1987-1990 Toyota Supra 6-cylinder 3.0L?
Yes. Walker Products 350-33019 is a direct-fit upstream oxygen sensor for the 1987-1990 Toyota Supra 6-cylinder 3.0L (L6-3.0L), and that engine takes one.
What thread size and mounting does the 350-33019 oxygen sensor have?
The Walker Products 350-33019 has an M18 - 1.5 thread and a flange mount. It is a narrow-band, 3-W sensor.
Is this oxygen sensor narrow-band, and does it go upstream?
Yes to both. This sensor is a narrow-band design for the upstream position, where it reads the oxygen content of the exhaust gas.
What can a failing upstream oxygen sensor like the 350-33019 cause?
Signs can include rough running, higher fuel consumption, more exhaust emissions or a malfunction indicator light. On vehicles that store fault codes in the ECU, a shop can read which sensor they relate to.
What protects the electrodes on this oxygen sensor?
A coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust gas. The electrodes carry a gas-permeable platinum layer.
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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.