Walker Products Oxygen Sensor P/N:350-34340
Walker Products 350-34078 oxygen sensor for the 2011-2012 Ford Escape 4-cylinder 2.5L and other vehicles measures the oxygen in the exhaust gas. That reading lets combustion efficiency be monitored. This Walker Products oxygen sensor is made for its specific application and fitment position, and it gives the ECU the diagnostic feedback it requires.
A damaged wiring harness or connector can be behind poor running, higher fuel consumption or a lit malfunction indicator light, so find the cause before you buy a sensor. If a failed oxygen sensor is the cause, this one replaces it.
Top applications include the 2011-2012 Ford Escape 4-cylinder 2.5L, the 2011-2012 Ford Fusion 4-cylinder 2.5L or V6 3.5L and the 2011-2012 Lincoln MKZ V6 3.5L. This listing is one sensor, and one is needed per vehicle. If your car is not named here, look for its year and engine in the "Vehicles it fits" section.
Fit and size
Build and materials
Interchange: CTK-OSFD4018
This part cross-references / interchanges with the following part numbers:
Is this the right oxygen sensor for a 2011 Ford Escape 4-cylinder 2.5L in the 2011-2012 range?
Yes. Walker Products 350-34078 is listed for the 2011-2012 Ford Escape 4-cylinder 2.5L, and that vehicle takes one sensor.
Is this a narrow-band or wideband oxygen sensor?
This sensor is a narrow-band type with 4 wires. It determines the oxygen content of the exhaust gas and monitors the air-fuel ratio for combustion efficiency.
Could poor running or a warning light come from this oxygen sensor?
It can. A failed sensor may make the engine run poorly, raise fuel consumption or exhaust emissions, or light the malfunction indicator light. Newer vehicles may also store fault codes in the ECU.
What does the coating on the electrodes of this oxygen sensor do?
The coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes themselves are made with a gas-permeable platinum layer.
Does Walker Products 350-34078 interchange with CTK-OSFD4018?
Yes. CTK-OSFD4018 is listed as an interchange number for the Walker Products 350-34078 oxygen sensor.
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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.