Package Include: 4 pieces Length: Length of Sensor 1:340mm Length of Sensor 2:270mm Length of Sensor 3:390mm Length of Sensor 4:390mm OE: Upstream( 234-4441 2344441); Downstream left (234-4244 2344244); Downstream right ( 234-4565 2344565) Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? A: .
