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2000-2004 Toyota Tundra Oxygen Sensor - Walker Products Inc. W0133-1894316
This oxygen sensor for use on 2000, 2001, 2002, 2003, and 2004 Toyota Tundras is made by Walker Products Inc. The oxygen sensor - also called an O2 sensor - is like an air meter for the exhaust system. This device measures oxygen levels in the exhaust and sends this information to the engine, which makes adjustments to the air and fuel allowed into the engine to optimize fuel efficiency. This O2 sensor is for use before the catalyst, and it has a four wire design. Walker Products Inc. approves this oxygen sensor for use on Toyota Tundra trucks made in 2000, 2001, 2002, 2003, and 2004, but it may not be the correct oxygen sensor for use on other vehicle makes, models, or years.
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