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How to Change the Radiator on a BMW E46

Model: BMW Serie 3 E46 - Years 1998-2006
Part: Radiator

Open the hood and identify the components that need to be removed before replacing the radiator. These include the plastic cover above the radiator and the duct that brings air to the cabin. Now, drain the coolant from the radiator into a container placed underneath it. Next, disconnect the various hoses that carry coolant from the reservoir to the radiator and engine by removing the clips with a screwdriver, and take them off along with the reservoir itself. Now remove the radiator fan (after disconnecting the electrical supply) using the appropriate wrench to unscrew the bolt on the shaft and unscrewing the various bolts shown in the images. We are now at the final step, which is removing the radiator. Disconnect the two hoses found at the bottom (to the right and left of the radiator) and unscrew the bolts indicated in the images that secure the radiator in place. Once removed, you can detach the necessary piece for the various hose connections from it. To install the new radiator, simply reverse the steps shown in the images.

Updated on 1 March 2026 by ScegliAuto

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