ACERA's patented Oxygen / Lambda sensor technology is crafted with the highest precision an designed to endure the toughest environment in the vehicles exhaust system. ACERA has over 20 years of experience in research, and developing, Oxygen Sensors and is one of the few manufacturers in the world that actually integrates the Zirconium Oxide ceramic technology directly into the sensor's core. Starting with the research and development to formulate the YSZ powder, ACERA then integrates the patented Zirconium Oxide (ZrO2) ceramic center core producing a highly durable, long lasting oxygen sensor that provides a much quicker time to operational temperature with minimal variation. To ensure the highest quality and stability, every new oxygen sensor undergoes a pressurized sealing test as well as a multifunction simulated exhaust bench test. Product Features:Premium OE ConnectorPremium stainless steel body protecting against extreme heat and corrosionDouble layer protection for added durability and long lifeMonolithic ceramic element allowing faster operating temperatureAluma element surface minimizing thermal variationAluma protection layer that protects the sensor catalyst from harmful gasIsolated circuitry that reduces signal noisePatented Zirconium Oxide (ZrO2) material100% inspection and testing of product functions on every sensorQuality System Processing: ISO 9001, ISO 14001, TS 16949 by UL. Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install.