Walker Products Oxygen Sensor P/N:350-34510
Walker Products 350-34443 oxygen sensor for the 2000-2004 Toyota Tacoma 4-cylinder 2.4L or 2.7L and the 2001-2004 Tacoma V6 3.4L measures the oxygen left in the exhaust gas. This downstream sensor gives the engine computer the feedback it needs to judge how efficiently the fuel is burning.
A worn sensor can show up as poor running, higher fuel consumption or a lit malfunction indicator light, though a damaged wiring harness or connector can be behind the same signs. With the engine off and cool, look both over for physical damage before you replace the sensor.
It fits the 2000-2004 Toyota Tacoma 4-cylinder 2.4L or 2.7L and the 2001-2004 Tacoma V6 3.4L. This listing is a single downstream sensor, and the fitment quantity is one.
Fit and size
Build and materials
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Is this O2 sensor right for the 2000-2004 Toyota Tacoma 4-cylinder 2.4L or 2.7L?
Yes. Walker Products 350-34443 is a downstream sensor for the 2000-2004 Toyota Tacoma 4-cylinder 2.4L or 2.7L, one per application.
Is this the 2001 Toyota Tacoma O2 sensor for the V6 3.4L?
Yes. The 2001 Toyota Tacoma V6 3.4L is in the fitment for Walker Products 350-34443, which goes in the downstream position.
Is this Walker Products oxygen sensor narrow-band or wideband?
It is a narrow-band sensor. This downstream oxygen sensor has 4 wires and a flange mount.
What protects the electrodes in this oxygen sensor?
A coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases. The electrodes use a gas-permeable platinum layer.
Do newer vehicles store a fault code for a failing 350-34443 oxygen sensor?
Yes, some of the fault codes newer vehicles store in the ECU relate to the affected sensor and its associated systems. A shop can read the stored codes if the malfunction indicator light comes on.
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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.