Looking to replace the radiator to my 1988 w126 300sel.
Plastic neck broke off on its own.

Going to first try to attach the plastic upper inlet by using JB weld but if that doesn't work then I have no choice but the replace the radiator.

Part#126 500 54 03 (supersedes the old part#124 500 5103) is no longer available thru the Mercedes dealer.

Looking for a good solid radiator.
Which brand is recommended?



Any advice is greatly appreciated

you can find pipe that will fit in pipe,and rad, and glue with epoxy,or fiberglass resin

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Behr is OEM, I always had good experiences with Nissens, they are a little cheaper. If you going to keep your car for a while I would go wit a Behr radiator.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).

Wouldn't mind trying this.
Any idea who or where I might be able to find a plastic fitting. H Depot?

Its incorrect coolant and incorrect hose clamps that cause this issue.

I used sink drain pipe on one of mine until I replaced the whole radiator.

Probably the previous owner. He did have green coolant that I immediately flushed out when I got the car. Hose clamps are original ones with Mercedes star and are the right size clamps.

Thanks for the info