Jim, I don`t remembering a hose for the heater coming off the #2 cylinder area for the 617 engine. I have an 85 617.952, and there is a hose for the heater core on the left side that connects to the fitting between #4 and #5 injector on the side of the block. the little short hose kind of in back and curls up by the oil filter lid.

Looked up the part, think it is this one. 123 832 84 94

1983 Mercedes-Benz 300D Sedan - Heater System - Page 1

If you have a hose from #2 cyl running behind the IP, wouldn`t there be interference with the linkage behind the pump?

Indybenz, the 617 eng should already have the fitting for the hose in the block.
there is a plug on the back side of the 617 block where a hose fitting could be used like where the 616 connects to. but with the 5th cyl, the eng sits too close to the firewall.

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