Brand Description: Standard is a leading manufacture of a full line of engine management related products from fuel to ignition to exhaust and all electronics in-between. Product Description: Oxygen Sensor Oxygen Sensor Standard manufactures a full line of engine management related products including ignition and emission parts on-board computers ignition wires battery cables fuel system parts as well as almost all the high technology critical components for late model vehicles including distributorless ignition system (DIS) control modules; oxygen sensors; exhaust gas recirculation (EGR) valves; high energy and coil-on-plug coils; fuel injectors and pressure regulators; a wide range of anti-lock brake temperature camshaft crankshaft knock MAP and throttle position sensors; and remanufactured on-board computers and mass air flow sensors. - 2003-2005 Chevrolet Astro Position=Upstream Left|||2004-2005 Chevrolet Colorado Position=Downstream|||2003-2005 Chevrolet Express 1500 Position=Downstream Right|||2003-2005 Chevrolet Express 1500 Position=Upstream Right|||2003-2005 Chevrolet Express 2500 Position=Downstream Right|||2003-2005 Chevrolet Express 2500 Position=Upstream Right|||2003-2005 Chevrolet Express 3500 Position=Downstream Right|||2003-2005 Chevrolet Express 3500 Position=Upstream Right|||2006 Chevrolet SSR Position=Downstream|||2002 Chevrolet Trailblazer Position=Downstream|||2004-2005 GMC Canyon Position=Downstream|||2002 GMC Envoy Position=Downstream|||2003-2005 GMC Safari Position=Upstream Left|||2004-2005 GMC Savana 1500 Position=Downstream Right|||2004-2005 GMC Savana 1500 Position=Upstream Right|||2004-2005 GMC Savana 2500 Position=Downstream Right|||2004-2005 GMC Savana 2500 Position=Upstream Right|||2004-2005 GMC Savana 3500 Position=Downstream Right|||2004-2005 GMC Savana 3500 Position=Upstream Right|||2002-2004 Oldsmobile Bravada Position=Downstream|||2006 Chevrolet Express