Walker Products Oxygen Sensor P/N:350-34293
Walker Products 350-33069 oxygen sensor for the 1984-1988 Mercedes-Benz 190E 4-cylinder 2.3L and the 1987-1993 190E 6-cylinder 2.6L measures the oxygen content of the exhaust gas. Made for this specific application and position, it gives the ECU the diagnostic feedback it requires.
A rough-running engine, higher fuel use, more exhaust emissions or a lit malfunction indicator light can mean the sensor is wearing out. None of these proves it, though, since an exhaust leak is another common source. The sensor, wiring harness and connector should also be checked for physical damage.
This Walker Products oxygen sensor is a direct-fit replacement for the 1984-1988 Mercedes-Benz 190E 4-cylinder 2.3L and the 1987-1993 190E 6-cylinder 2.6L. This listing is one upstream sensor, and each engine takes one.
Fit and size
Build and materials
Product information is for general reference and may contain errors. See our Disclaimer.
Does this 190E oxygen sensor fit the 1987-1993 Mercedes-Benz 190E 6-cylinder 2.6L?
Yes. Walker Products 350-33069 is an upstream sensor listed for that engine, and also for the 1984-1988 Mercedes-Benz 190E 4-cylinder 2.3L.
What thread and sensor type does this upstream oxygen sensor have?
Walker Products 350-33069 is a narrow-band sensor with an M18 - 1.5 thread.
Why is the electrode coated on this oxygen sensor?
The coating keeps combustion residue and particulates in the exhaust gases from contaminating or eroding the electrode surfaces.
How do I tell if an upstream oxygen sensor is going bad?
Poor running, higher fuel use, more emissions or a lit malfunction indicator light are the signs. Look the sensor, wiring harness and connector over for physical damage with the engine off and cool.
Does this oxygen sensor send information to the ECU?
Yes. It measures the oxygen in the exhaust gas and gives the ECU the diagnostic feedback it requires, so the computer can monitor the air-fuel ratio.
No reviews yet — be the first to review this product.
Write a Review
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.