Lambda Sensor 6PA358103-251 Hella Oxygen O2 1527105 1746710 8V21-9F472-AB Fits e.g. Ford Fiesta VI (CB1, CCN) Heated Fuel Efficiency and Emission Control: Measures oxygen in exhaust gases, optimizing fuel-air mix for lower emissions and better engine efficiency, reduced fuel use and lower overall emissions. Built for durability: HELLA Lambda Sensors offer improved overheating protection and increased lifespan and reliability. Precise fit for each engine - please check exact vehicle application. Overheating Protection: HELLA Oxygen Sensor reduces overheating risk, extending sensor life for better engine performance and lower fuel consumption. Fits e.g. Ford Fiesta VI (CB1, CCN) Heated Leading supplier for the independent aftermarket Improved overheating protection for a longer life compared to OE products Reduction of emissions Higher performance Improved efficiency.