The lambda sensor is the main sensor in catalytic exhaust gas purification. It measures the residual oxygen content in the exhaust gas so that the ratio of fuel and intake combustion air can be optimally adjusted. Lambda sensors constantly detect chemical parameters in the exhaust gas and convert them into electronic signals. This information is transmitted to the engine control unit, which adjusts the mixture formation in the combustion chamber according to the evaluated results. As a result, the emission of pollutants such as nitrogen oxides, hydrocarbons, and soot is significantly reduced. Quality by Conviction: In order to reliably reduce the amount of pollutants produced during combustion and therefore comply with the strict Euro standards, lambda sensors must be robust and durable to transmit precise electronic signals to the engine control unit. All lambda sensors supplied by febi are intensively tested by our certified quality management team. The quality control of electronic components is carried out with the aid of a high-resolution X-ray device which is used to check the integrity of the circuitry. Precisely Fitting Production: Anyone who repairs their own car knows the problem: inexpensive replacement parts from the independent parts trade can deviate from the mould and can be difficult to install at the intended location. febi makes all the difference: all replacement parts are manufactured precisely and it goes without saying that production tolerances are adhered to. This is the only way to guarantee an optimal fit.