Air Filters

Air filters
E-Cat + BCS

Online Catalog (eCAT)

End of the Line for Dirt Particles of All Kinds

Sectional view of air filter

Task of the air filter

- To protect the engine against dirt particles in the intake of air

- To protect the engine against wear

- To safeguard the air supply in the mixture generation

- To reduce the noise level

Change the air filter regularly according to the vehicle manufacturer's specification!

Consequences of silted-up filter:

  • Poor air-fuel mixture generation resulting in reduced engine power and increased pollutant emissions
  • Increased fuel consumption
  • Increased engine wear from particles
  • Problems starting your vehicle

The prerequisite for flawless operation: Tight fit

Leakages and porosity lead to a bypass of unfiltered air (unmetered air) in the intake duct. Consequently, Bosch air filters possess a particularly long-lasting seal made of polyurethane:

  • Exact fit matched to the housing shapes
  • Unevenness in the housing is compensated
  • Flexibility and suppleness in the seal across the entire service life of the filter



  • Air filter mode of operation