NGK Ford Focus 2006-2003 Direct Fit Oxygen Sensor

This NGK oxygen sensor is what you get when you need to replace the one on your 2003-2006 Ford Focus. It's a direct fit part, meaning it's made to install right where the original was. Oxygen sensors are a key part of your car's computer system, constantly telling the engine control unit (ECU) how much air and fuel to mix for the best performance, fuel economy, and to keep those emissions in check. If your check engine light is on, especially if it's related to the fuel system or catalytic converter, this sensor is a likely culprit.

NGK, known as NTK in the OEM world, builds these sensors with an advanced ceramic element. This isn't just any ceramic; it's got a special three-stage coating that acts like a shield against contaminants and deposits. This helps prevent the sensor from getting poisoned by exhaust gasses, which is a common reason they fail. Because NTK is a major supplier to car manufacturers, they have a lot of experience in making sure these sensors work correctly from the start of development all the way to production.