The stem on top of my 89 420 sel just broke off [the plastic stem that the hose from the radiator filler tank is attached to] Can this be repaired or do i replace radiator?

On most modern benzes it's replaceable, and cost is about a dollar. Hope you're this lucky!

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

420benz,
If your radiator neck is like most of the other models it is not repairable. Rebuilt radiators can be purchased at Reseda Radiator in Reseda, CA (818) 342-5154 very inexpensively. I had to replace my radiator for the same reason. The charge was $100. plus a core charge of $75 refunded when you send your old one back to them. Of course, this was a different model and the price may be a little different for yours.
John CH

Thanks for the info,just found out that it can not be repaired,i will buy a rebuilt.

If it's the 90 degree, small elbow that connects the smallish hose from the radiator back to the expansion tank, then it's replaceable, no?

If not, I apologize in advance for my poor advice

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo