[INNOVATIVE TECHNOLOGY] - Every Bosch Oxygen Sensor benefits from the technological and manufacturing experience gained from decades of production since first inventing the Oxygen Sensor in the late 1960's, ensuring long-lasting performance [FACTORY TESTED] - Seared appearance of protection tube is a result of a 100 percent fully functional quality test to ensure every Bosch manufactured sensor meets Bosch's rigorous standards for quality and performance [STAINLESS STEEL BODY] - Exclusive double laser-welded stainless steel body is totally submersible and sealed tight to protect against damage from exhaust emissions - ensuring longer sensor service life [FAST ACTING HEATER] - Fast-acting heater optimizes sensor operation on Planar and 3, 4, and 5 wire Thimble type sensors allowing the oxygen sensor to reach its operating temperature quicker - within seconds - for optimum performance [READY TO INSTALL] - True Direct-fit OE connectors and harnesses, along with threads pre-coated with anti-seize compound right out of the box, make installation simple and easy Compatible with select vehicles (Note: engine may affect fitment - verify specific fitment details, including sensor position, with fit checker above): FORD: 2001-02,2005-06 Expedition, 1999-10 Explorer, 2004-05,2007-10 Explorer Sport Trac Compatible with (continued): FORD: 2009-12 E-350 Super Duty, 2009-12 E-450 Super Duty, 2004-07 Freestar, 2001-08 F-150, 2004 F-150 Heritage, 2001-11 Ranger, 1999-03 Windstar; LINCOLN: 2006-08 Mark LT, 2001,2005-06 Navigator Compatible with (continued): MAZDA: 2001-10 B2300, 1999,2001-08 B3000, 2001-03 B4000; MERCURY: 2004-07 Monterey, 1999-10 Mountaineer