Fitments: O2 Oxygen Sensor Replacement For Ford Crown Victoria Lincoln Mercury 4.6L Upstream Replace OE #: The oxygen sensor is designed and manufactured with OE standard, The interchange OE part #234-4373 Warm Tips:Please use the YEAR/MAKE/MODEL drop down bar and interchangeable part numbers to confirm the compatibility before purchasing. High Quality: Every sensor is 100% tested before shipping. Warranty: You are backed by our Performance Assurance. This oxygen sensor comes with 30 Days HASSLE-FREE RETURN & 1 Year unlimited replacement promise. EXPEDE 1pc O2 Oxygen Sensor Replacement For Ford Crown Victoria Lincoln Mercury 4.6L Upstream 234-4373