Removal & Installation (Left Cap)
WARNING: This page does not describe the selected car, but rather 82 other vehicles, including the 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, and 2005 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Remove fan. Unfasten clips on air filter box. Unfasten hose clip from auxiliary hose for air pump. Disconnect electrical connection. Remove upper section of suction filter housing with mass airflow sensor. Unfasten cable connectors. See Fig 1. Unclip and remove left distributor cap cover. See Fig 2. Pull off shielded connectors. Remove screws and distributor cap. See Fig 3. To install, reverse removal procedure.