PRODUCT OVERVIEW: - NTK® is The Sensor Specialist™ for import and domestic applications. Established under the NGK family of products, NTK Oxygen Sensors are part of our ongoing commitment to streamline product types and increase coverage. A ceR-A-Mics company at our core, NTK uses state-of-the art technology enabling control of the ceR-A-Mic that is used in our oxygen sensors from raw material to finished product. NTK is the world's largest supplier and manufacturer of original equipment oxygen sensors. Combining expertise with innovation, NTK Oxygen Sensors offer superior fit, form and function. NTK Oxygen Sensors are extensively tested during manufacturing to assure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and.