(For example: 2011 Volvo Rex 350 Basic Sport Utility Vehicle with 4 doors, 3.5-liter 3456 ml V6 gasoline engine. 1) Sensor Model: 【DENSO-234-9003】. 1) 1 × Oxygen Sensor 【234-9003】. • Robot Laser Welding: Ensures seamless installation, no air leakage, and stable signal transmission.