In an internal combustion engine, the air filter has the task of removing particles from the intake air before they enter the engine. On average around 10,000 litres of air for every litre of fuel passes through the air filter, screening contaminant particle, include sand grains, specks of dust, soot particles or tire and brake abrasions. Air filters from Febi Bilstein are characterized by their high filtration performance. They ensure optimal engine operation at different loads and protect pistons, piston rings, cylinder walls and valves from increased wear.