top intake radiator on 1995 BMW 540i

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The plastic part of yhe tube that is inserted in the top hose has falling off. It is replacebile or do I need a new rediator?
(2) Answers
When the plastic "neck" of the radiator is broken, then you will need to replace the radiator. Be very cautious when it comes to the cooling system, overheating the engine will do thousands of dollars in damage very quickly!