I'm going to drain/fill my M47, and I want to replace the seals on the drain and fill plugs. Are the seals the same as the one on the engine oil drain plug? If not, anyone know what size it is?

To repeat some good advice frequently seen on here: remove the FILL plug first to be sure you can. It really sucks to drain the trans, then find the fill plug is frozen in place, and you have a dry trans.
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Bob: Son's XC70, daughter's 940, my 81 and 83 240's, 89 745 (V8) and S90. Also '77 MGB and some old motorcycles

I can tell you the Volvo part number is 11998 (11998-2 but no one lists it that way except maybe Volvo). At least that is what I used for my '89 wagon.

This is a different gasket than the engine oil pan, at least for the 240's I have owned.

In looking around for a description I find one vendor that gives only the inside diameter which is 18.3 mm.

I see others describing this as an engine oil pan plug gasket so I suppose that is true for some models.

Anyway, the complete spec seems to be 18 x 24 x 1.5 mm. Copper, of course.

If you've never removed the drain and fill plugs on your M47, you're in for a real treat.


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'80 DL 2 door, '89 DL Wagon

The part number is definitely helpful, thanks!

This'll be the fourth time I'm refilling an M47, so I'm familiar with the sticky fill plug. It's the first time I'm doing it on this one, and the first thing I did, before bringing it home was get the fill plug loose.