ZBN 234-4621 Oxygen O2 Sensor Upstream Downstream Compatible with Acura CL EL NSX TL Honda Accord Civic Prelude

???PROFESSIONAL AUTO PARTS PROVIDER IN AMAZON??? ?Please carefully check your vehicle type with our vehicle fitment, and please compare our part pictures with your old part to avoid wrong purchase. ?Upstream = Pre-Cat = Before Catalytic Converter =Sensor 1 = Upper Oxygen Sensor ?Downstream = Post-Cat = After Catalytic Converter =Sensor 2 =Lower Oxygen Sensor ?Socket type: More Showed in the pictures ?VEHICLE FITMENT? Compatible with Acura: CL 3.2L 2001-2003 Downstream EL 1.7L 2001-2003 Downstream NSX 3.0L/3.2L 2000-2005 Downstream Rear TL 3.2L 1999-2003 Downstream Compatible with Honda: Accord 2.2L 1990-1993 Upstream; Female Connector; Accord 2.3L 1998-1999 Downstream Accord 2.3L 2000-2002 Downstream; Engine Code F23A1; Engine Code F23A5; Accord 2.3L 2000-2002 Downstream; Engine Code F23A4; ULEV; Accord 3.0L 1998-2002 Downstream Civic 1.7L 2001-2003 Downstream; EX Model; Si Model; Prelude 2.2L 1997-2001 Upstream; Type SH; ?Double protective cover, durable, reliable, Long lifetime. ?Built-in heater to accelerate ignition, improve fuel efficiency, reducing harmful emission. ?Hi quality Oem Chips and materials, make sure Close to original effect. ?Breathable filter membrane Ensure sufficient air for the sensor to achieve superior performance. ?Insulation preservation Prevents high temperatures, vibrations and wire corrosion, ensuring accurate signal and longer life. ?Please contact us for solution if you have any problem with our parts. You will get a quick and free replacement or refund if problem is reported to us in 1 year warranty time.