is o ring different on 116 vs 123,i havent taken old one out,but in box with new thermostst came a thin rubber o ring,on my 85300d the o ring is fatter with a little lip on top with hole in it,are they different -i want to have correct o ring before i take it apart

__________________
95 e320,87 sdl,79 300sd

all you have to do is look it up in the parts tab above.

Behr shows this


so Your call. the second picture of the other brand only shows the left "O" ring shown above.

Note: This is what they show for a 79 300SD.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

The turbo 617's have the thermostat bypass and need the gasket with the small hole. The shape of the thermostat housing cover will give a good clue as to which gasket is required.