As you all know and I just found out, the coolant draining from the block in the OM617 engine really makes a mess as it splashes over the frame and front suspension members. I had a hard time with several pans catching most of it so I could take it to the local disposal site.

Will the OM603 drain fit the older 617 engine family? The 603 has a drain connection that is a valve rather than a simple plug. It has a hose barb so you can put a piece of 1/2 inch hose over it, loosen the valve, and drain the coolant without making a mess. It would be great if the newer drain valve could be substituted for the older plug.

The OM617 drain plug has 14x1.5mm threads (my measurements). The part number is N 007604 014110.

The OM603 drain valve is part number A 601 997 04 30. I don't know the thread size.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I made a drain plug out of a 1/4 inch galvanized nipple (2 inches), a 1/4 inch galvanized ball valve, another nipple and a 1/4 inch galvanized cap to go over the threads on the end.

To drain, I use a piece of garden hose with one end cut off.

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"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad