[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): ALFA ROMEO: 1981-82 GTV-6, 1982-85 Spider; BMW: 1984-85 318i, 1979-83 320i, 1982-87 528e Compatible with (continued): BMW: 1979-81 528i, 1983-84 533i, 1980-84 633CSi, 1979-84 733i; DELOREAN: 1981-83 DMC 12; PEUGEOT: 1980-82,1984-85 505; RENAULT: 1985 Fuego, 1985-86 R18i; SAAB: 1986-87 900; VOLVO: 1984 DL, 1977-84 242 Compatible with (continued): VOLVO: 1977-85 244, 1977-85 245, 1978-81 262, 1978-82 264, 1978-81 265, 1983-84 760