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Oil Drain Plug

3K views 10 replies 7 participants last post by  bwswede 
#1 ·
Draining the oil from a new to me motor OM352 and it has a very corroded drain plug, can someone tell me the correct size allen key??? I want to go with 14mm ???

Thanks
G Vavra
 

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#5 ·
Oil Drain plug shaft diameter

I need to change out my drain plug gasket and I would like to do it without draining the oil. Does anyone have the plug's shaft diameter handy so I can get the correct gasket beforehand?

TIA,
BWSwede
 
#6 ·
There are at least two different sizes.. The OM352 as of engine number 407132 from the production year of 1978 is the one shown above in the beginning of this thread (larger one). Then there is the pre 1978 that is shown here (smaller dia)..
Maybe Von or someone can get some measurements of the other one.
 

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#9 · (Edited)
Just looking at your original request, it seems to me you needed info on the plug seal as shown in the first post ?
In that case it is worth noting the copper seal(washer) is actually a hollow squish washer of some thickness.
This might not be critical, but perhaps worth noting.
 

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