🚗 MIROZO 234-4668 Oxygen O2 Sensor for Chevy, GMC, Cadillac, Buick - Silverado, Suburban, Impala, Sierra, Yukon, Escalade, Lacrosse, Rainier & More Vehicles - Upstream/Downstream Review

TIPS: If you are not sure whether this product is suitable for your model, please check detail page, or in for m us your vehicle part number to let us check for you.Oxygen (O2) Sensors commonly fail due to contamination. When checking or replacing an O2 Sensor, visually inspect the sensor body to determine if it has been contaminated by a faulty part or substance upstream, and correct the fault before replacing the sensor. FEATURES OF THE MIROZO OXYGEN SENSOR - Internal Ceramic Insulation for optimal sensor performance; Laser welded sensor body to keep out contaminants; Dual Insulated Protective Cover Prevents premature zirconium sensor wear; Sealed wire leads prevent water interference with electronic signal. ADVANTAGES OF THE MIROZO OXYGEN SENSOR: Improve Engine Response & Performance; Save money in fuel costs; Reduce harmful emissions; Prevent premature failure of the catalytic converter. An OBD Scan Tool will usually identify Oxygen (O2) Sensors by the Bank Number (B1 = Bank 1; B2 = Bank 2) and Sensor Number (S1 = Sensor 1; S2 = Sensor 2, etc.). Bank 1 is not on the same side of the engine for every vehicle. Bank 2 refers to the bank opposite Bank 1. Sensor 1 refers to the sensor before the catalytic converter. Other Terms: Upstream Sensor, Pre-Cat Sensor. Sensor 2+ typically refers to the sensor(s) after the catalytic converter. Other Terms: Downstream Sensor, Post-Cat Sensor. FITMENT: for Buick Allure 2005-2009, for Buick Enclave 2008, for Buick Lacrosse 2005-2009, for Buick Lucerne 2007-2011, for Buick Rainier 2005, for Buick Rendezvous 2006-2007, for Buick Terraza 2005-2007, for Isuzu Ascender 2005, for Pontiac Bonneville 2004-2005, for Pontiac G5 2007-2010, for Pontiac G6 2005-2010, for Pontiac G8 2008-2009, for Pontiac Grand PRIX 2005-2008, for Pontiac GTO 2004-2006, for Pontiac Montana 2005-2009, for Pontiac Torrent 2006-2009.