NGK Audi TT 2006-2001 Direct Fit 5-Wire Wideband A/F Sensor

NGK is known worldwide as a leading supplier of original equipment oxygen sensors. This 5-wire wideband air-fuel ratio sensor is a direct fit for a wide range of vehicles, including models like the Audi TT, Volkswagen Golf, and BMW 545i. Oxygen sensors are a key part of your vehicle's diagnostic system, working to keep the engine running at its best, maximizing your miles per gallon, and cutting down on harmful exhaust emissions.

Unlike standard oxygen sensors that just tell the computer if the mix is rich or lean, this wideband sensor gives a precise, linear output. This allows the engine control unit (ECU) to make very exact adjustments to the air-fuel mixture, keeping it as close to the ideal stoichiometric ratio as possible for the cleanest and most efficient burn. NTK, the sensor division of NGK, uses advanced ceramic technology, giving them full control over the sensor element from start to finish. This particular sensor features an advanced ceramic element with a three-stage contaminant-resistant plasma jet and deposit trap overcoat, which helps protect it from poisoning and ensures reliable performance.