[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: 1986-91 Aerostar, 1987-88,1990 Bronco, 1987-90 Bronco II, 1987-91 Country Squire, 1987-91 Escort Compatible with (continued): FORD: 1987-88 EXP, 1986-90 E-150 Econoline/Club Wagon, 1986-90 E-250 Econoline, 1986-89 E-250 Econoline/Club Wagon, 1986-89 E-350 Econoline Club Wagon, 1987-88,1990 F-150, 1986-88 F-250, 1986-87 F-350 Compatible with (continued): FORD: 1987-91 LTD Crown Victoria, 1987-93 Mustang, 1990-92 Probe, 1987-92 Ranger, 1987-95 Taurus, 1987-90 Thunderbird; LINCOLN: 1987-90 Continental, 1987-92 Mark VII, 1987-90 Town Car; MAZDA: 1994 B2300 Compatible with (continued): MERCURY: 1987-91 Colony Park, 1987-90 Cougar, 1987-91 Grand Marquis, 1987 Lynx, 1987-90 Sable, 1991 Tracer