I just finished replacing water pump on 300se 1990.while putting coolant in it I noticed this see pic's what's that tube for comes from top of expantion tank to right side of radiator the plastic elbow broke. do I have to replace rad? can I glue it on? I've got to fix the car asap my sisters in the hospital with termial cancer and she may pass today need to drive this car!

 

try the Toyota selecon that handle a hot temp and try to put it but beware to make the water way close

or u can change the side of the Radiator i think u can find any place to change it side

 

you can get a new one at the dealer. they commonly break or leak