Focus ST 2013+ NTK 5-Wire Wideband Air-Fuel Sensor

Today, everyone agrees that we have to care about our environment and reduce the amount of pollution produced by vehicles. To encourage reduced emissions, the government has introduced tougher exhaust gas emission legislation. As a result, today modern vehicles are equipped with oxygen sensors that control the fuel and ignition systems to optimize vehicle performance in the areas of fuel economy and emissions. Generally, a vehicle is equipped with two oxygen sensors located before and after the catalytic converter. They check the amount of oxygen in the exhaust and send signals to the vehicle's on-board computer that regulates the air/fuel mixture and monitors catalytic converter function to ensure proper engine performance, optimum mileage, and low emission of air pollutants from the vehicle.

If it happens that your oxygen sensor is failed or worn out, you will experience increased fuel consumption and poor driveability. Moreover, the catalytic converter might be failed. In addition, your four-wheel friend will fail emission test. So, if testing shows your sensor is fault, don't hold on and replace it with this first-class oxygen sensor by NTK designed and manufactured to meet OE requirements for fit, form, and function. The sensor is made of first-grade materials and equipped with waterproof factory fitted connectors to ensure long-lasting durability and perfect fit. It's built with sensing element incorporating exclusive NTK's premier technical ceramics. To guarantee reliability and premium quality, the product is extensively tested during manufacture process.

NGK was founded in 1936 as a subsidiary of NGK Spark Plug Co, Ltd., of Japan. Since its foundation, it has designed and manufactured the products where they are going to be used. It means a substantial number of products sold in the USA are made in America. One of the benefits of such a policy is the ability to work closely with manufacturers in developing products tailored specifically to their needs. Constantly researching new ways to reduce emissions, improve fuel mileage and engine efficiency, the company developed additional product lines such as NTK Oxygen Sensors, NTK Knock Sensors, and a variety of other sensors. All products are OE approved and built with the highest quality materials and craftsmanship to ensure superior quality and durability.