OKAY MOTOR Downstream O2 Oxygen Sensor for 2000-2004 Toyota Tacoma 2.4L 2.7L 3.4L Downstream Oxygen Sensor for 2000-2004 Toyota Tacoma 2.4L 2.7L 3.4L Part #: 234-4189,13986, 2344189, 8946509280, SU5655 Aftermarket Replacement Part 180-days manufacturer type warranty limited Applications: 2000-2004 Toyota Tacoma 2.4L 2.7L 3.4L