The W123 chassis covers 240D's, 300D's, 300TD's, 280E's, and several other models of Mercedes coupes, sedans and wagons from model years 1977 to 1985.

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Can I fix a hole in my radiator, or do I need a new one?

I think the answer to this one is going to be "no,' but if you don'task, the answer is always "no!"

After weeks of procrastination, hours of stripped-bolt frustration, and a brief period of euphoria when I successfully replaced my thermostat, I attempted to reattach the hose to the top right of my radiator, as one does. In shoving it on there, I managed to rip off the hose connector and surrounding radiator completely. There is a hole about 2.5 inches radius where my radiator would attach to the hose.

Can I glue the stuffing outta this until I have the money to replace the radiator? Can I just replace the top plastic part where the hose should attach?

I need it to drive 30 minutes each way from work, about 15 miles at the outside.

Update (10/02/2017)

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Thanks for the response, Blake. I was going to try some 500* epoxy on it, but I wouldn't want to cause further damage than is already done, so I think I will wait until I can get the new one. At least a new radiator isn't as bad as replacing my head gasket could have been!

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I tried something similar on my A4 Audi, and it just blew out at work and I needed a tow home and a new pipe. My advice if in doubt don't!

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Chosen Solution

Hi Cassy, the problem with trying to repair it is preventing anything, such as epoxy, from getting inside the radiator and then having it flow into your engine. I would suggest replacing it with either a good used one if you are in a financial pinch but new would be the best option.

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True Dat as Klein says above. In any case, no epoxy will withstand the heat cycling that a plastic radiator sees. Replacement is the only safe option. They are not very expensive. Nissens, a Danish company makes radiators for our cars. I have one on my 300CD and believe it to be better quality than the OE.

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Cassy BoBassy will be eternally grateful.
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