BMW Cars 1999-06

Air Cleaner

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Removal & Installation



E30 Series Models
  1. Loosen the hose clamp at the air flow meter. Disconnect the hose at the air flow meter.
  2.  
  3. On 318 and M3 models:
    1. Remove the air flow meter electrical connection by rotating the outer ring and pulling off.
    2.  
    3. Release the 4 clips securing the upper air filter housing to the lower chamber and lift the upper housing assembly up and out of the engine compartment.
    4.  

  4.  
  5. On 325 models:
    1. Remove the air flow meter electrical connection by depressing the clip and pulling it off.
    2.  
    3. Remove the 2 nuts securing the air cleaner housing to the mounting bracket. If necessary, remove the wire tie holding the electrical lead.
    4.  
    5. Remove the air cleaner housing from the engine compartment and release the 4 retaining clips securing the upper housing to the lower housing, then lift the upper housing upward.
    6.  

  6.  


WARNING
Handle the air flow meter with care.

  1. Remove the air filter element. Clean the lower chamber of the air cleaner housing from any collected debris.
  2.  
  3. Installation is the reverse of the removal procedure.
  4.  

E36 Series Models
4-Cylinder Engines


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Fig. Unclip the air cleaner fasteners . . .



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Fig. . . . then separate the halves of the air cleaner



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Fig. Remove the air filter element from the air cleaner-E36 318i



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Fig. When installing the air cleaner element, make sure the seal is fully seated into the housing groove before installing the top cover

  1. Unsnap the clips holding the upper section of the air cleaner housing to the lower housing.
  2.  
  3. Lift the upper section to remove the air filter element.
  4.  
  5. Remove the air filter element. Be sure to clean the lower plenum of the air cleaner assembly as it tends to collect large pieces of dirt and leaves.
  6.  
  7. Installation is the reverse of the removal procedure.
  8.  

6-Cylinder Engines


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Fig. Release the air cleaner housing retainers-325i model shown



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Fig. Remove the air filter element from the air filter housing-325i model shown

  1. Release the air filter housing retainers.
  2.  
  3. Carefully slide the filter carrier assembly upward away from the filter housing.
  4.  
  5. Remove the air filter element from the filter carrier.
  6.  
  7. Clean the air filter housing as necessary from any residual debris.
  8.  
  9. Install the new element onto the carrier assembly making sure the element is installed in the correct direction as marked on the element.
  10.  
  11. Installation is the reverse of the removal procedure.
  12.  

 
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