Walker Products 250-24483 oxygen sensor for the 2001-2006 Lexus LS430 V8 4.3L and other vehicles measures the oxygen in the exhaust gas. Each Walker part number is built for its specific application and position and gives the ECU the diagnostic feedback it expects.
A failing sensor can show up as rough running, higher fuel consumption, more exhaust emissions or a malfunction indicator light, and each of those can come from other causes. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage first. A shop can read the stored fault codes to narrow it down.
This oxygen sensor is a direct-fit replacement for the 2001-2006 Lexus LS430 V8 4.3L and the 2002-2005 Lexus SC430 V8 4.3L. The listing is one sensor, and each downstream position, left or right, takes one.
Fit and size
Build and materials
Is this the right oxygen sensor for the 2001-2006 Lexus LS430 V8 4.3L?
Yes. Walker Products 250-24483 is listed for the 2001-2006 Lexus LS430 V8 4.3L, for the downstream left and downstream right positions.
Does this oxygen sensor fit the 2002-2005 Lexus SC430 V8 4.3L?
Yes. This downstream sensor is listed for the 2002-2005 Lexus SC430 V8 4.3L, and the listing is a single sensor.
Is this Walker Products oxygen sensor narrow-band or wideband?
This sensor is narrow-band. It is a direct-fit design with four wires and electrodes made of a gas-permeable platinum layer.
What does the coating on this oxygen sensor protect against?
The coating keeps the electrode surfaces from contamination and erosion caused by combustion residue and particulates in the exhaust gases.
What thread size does this oxygen sensor have?
The thread is M18 - 1.5. Walker Products 250-24483 is a threaded sensor with four wires.
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.
