My only small issues was the radiator came with a manual drain plug i didn t know this and almost installed it with that plug.
E46 radiator drain plug manual.
Pull out the clip that holds the expansion tank to the mounting plate.
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I looks like the previous owner had already replaced the expansion tank since the part is from behr but there was no thermostat in the mounting bracket.
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Thanks oembimmer new customer.
Remove the radiator drain plug and drain the coolant.
I take a close look at the radiator drain plug system on my 1 series bmw.
See links to purchase parts and tools below the bmw blogs are wrong.
Disconnect the temp sensor in the lower radiator hose.
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After removing the expansion tank i did not see a thermostat in there.
Remove the drain plug on the passenger side of the engine block and drain the coolant out of the block.
Drain plug washer 07 11 9 963 200.
I replaced the radiator on my 2000 323i with manual transmission.
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