Walker Products Oxygen Sensor P/N:250-241242
Walker Products 250-241129 rear oxygen sensor for the 2004-2007 Toyota Highlander V6 3.3L, the 2008-2013 Highlander V6 3.5L and other vehicles measures the oxygen content of the exhaust gas. The ECU uses that reading to monitor the air-fuel ratio and combustion efficiency.
A failing sensor can show up as rough running, higher fuel use, more exhaust emissions or a lit malfunction indicator light. The wiring harness and connector can be behind those signs too, and physical damage to them can shorten a sensor's life, so find the cause before buying a sensor.
This direct-fit sensor also covers the 2007-2009 Lexus RX350 V6 3.5L and works as an oxygen sensor for the 2004-2006 Lexus RX330 V6 3.3L. These fitments call for one sensor per car, and 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.
Is this oxygen sensor right for the 2008-2013 Toyota Highlander V6 3.5L?
Yes. Walker Products 250-241129 is listed for the 2008-2013 Toyota Highlander V6 3.5L as a downstream rear sensor, and that fitment takes one.
Is this Walker Products oxygen sensor narrow-band?
Yes. Walker Products 250-241129 is a narrow-band sensor with 4 wires.
Is this an upstream or downstream sensor?
This one is a downstream rear sensor. It is sold one per listing, and the fitment calls for one sensor per vehicle.
What is the coating on this oxygen sensor for?
The coating keeps combustion residue and particulates in the exhaust from contaminating or eroding the electrode surfaces. Those electrodes use a gas-permeable platinum layer.
Will a bad oxygen sensor store a fault code?
Newer vehicles store fault codes in the ECU, and some relate to the affected sensor and its systems. The sensor, harness and connector can be checked for physical damage with the engine off and cool.
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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.