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Engine Air Filter Guide

Model: BMW Serie 5 E39 - Years 1995-2003
Part: Air filter

The engine air filter is a component of the vehicle's fuel system and serves to clean the air that is drawn in from outside to the combustion chamber. Cleaning the engine air filter of your car is a task not to be overlooked if you want to maintain high performance. Cleaning the engine air filter is a relatively simple operation. It is advisable to replace the filter fairly frequently, every 15,000 - 18,600 miles. The container where the filter is located is called the air box; it is a box of variable shape and size located near the engine.

Updated on 10 February 2026 by ScegliAuto

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Installing the Engine Air Filter
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BMW Serie 5 (1995-2003 / E39) The function of the engine air filter is to protect the engine by trapping impurities from the airflow. The air filter is enclosed in a sealed housin…
Engine Air Filter Replacement
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BMW Serie 5 (1988-1995 / E34) To replace the engine air filter, remove the airbox (the box containing the filter) as it is installed inside the engine compartment, rotated 90° fro…
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BMW Serie 5 (1995-2003 / E39) If the air filter does not need to be replaced, cleaning may be necessary. To perform a proper and thorough wash, obtain a suitable cleaner. First, c…

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