[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): BUICK: 2008-09 Allure, 2008-09 LaCrosse, 2006-11 Lucerne, 2006 Rainier; CADILLAC: 2006-07 CTS Compatible with (continued): CADILLAC: 2006-11 DTS, 2007 Escalade, 2007 Escalade ESV/EXT; CHEVROLET: 2007 Avalanche, 2006 Avalanche 1500, 2006,2009-12 Colorado, 2006-09 Impala, 2006-07 Monte Carlo, 2006-13 Silverado 1500 Compatible with (continued): CHEVROLET: 2007 Silverado 1500 Classic, 2013-15 Spark, 2006-07 Suburban 1500, 2007 Suburban 2500, 2006-07 Tahoe, 2006,2008-09 Trailblazer, 2006 Trailblazer EXT; GMC: 2006,2009-12 Canyon, 2006,2008-09 Envoy Compatible with (continued): GMC: 2006 Envoy XL, 2006-13 Sierra 1500, 2007 Sierra 1500 Classic, 2006-07 Yukon, 2006-07 Yukon XL 1500, 2007 Yukon XL 2500; HUMMER: 2007-09 H2, 2008-10 H3, 2009-10 H3T; ISUZU: 2006 Ascender, 2006 i-280, 2006 i-350 Compatible with (continued): PONTIAC: 2005-08 Grand Prix; SAAB: 2006,2008-09 9-7x