Pre-Cat oxygen sensor for Mazda 3 BM PE-VPS Skyactiv-G 4-Cyl 2.0 Dir. Inj. 1/14 on

Direct Fit Oxygen Sensors offer significant benefits over universal fit, ensuring correct wire configuration and reducing the chance of incorrect connections. Many later 5 wire Oxygen Sensors can be model specific with calibrating electrical components integrated in the sensor harness connector and cannot be altered. It also ensures less chance of an incorrect heater resistance being fitted to the vehicle, which is very important on later models.