64 11 262 Removing and installing/replacing auxiliary water pump

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of scalding! Only perform this work after engine has cooled down.

Disconnect coolant hoses from auxiliary water pump.

NOTE: Illustrations show a vehicle with an M47T2 engine.

Unfasten plug connection (1) and disconnect. Release hose clamps (2) and detach coolant hoses (3) from auxiliary water pump (4).

Fill and vent cooling system.

Pull auxiliary water pump (4) in direction of arrow out of front engine support (5).

Fig 1: Identifying Hose Clamps And Coolant Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: Install auxiliary water pump (1) in front engine support so that rubber mounts (2) slide exactly in associated locators (3).

Fig 2: Identifying Auxiliary Water Pump And Rubber Mounts

Courtesy of BMW OF NORTH AMERICA, INC.