Dodge Ram Jeep Oxygen Sensor 234-4587 05149171AA Upstream/Downstream Dual Use

Dodge Ram 1500/2500/3500 (5.7L HEMI, 2007-2013), Jeep Grand Cherokee (4.7L/5.7L, 2005-2010) and Commander (4.7L) special oxygen sensors (OEM 234-4587/05149171AA/234-4593). Upstream and downstream compatible design to meet front and rear sensor installation needs simultaneously. Real-time monitoring of exhaust oxygen content and feedback to ECU to ensure precise air-fuel ratio, improving fuel economy and lowering emissions.