Found it thanks Heckflosse.
From USA ... just for the name of it:
For Volvo 240 244 245 Engine Camshaft Plug Rear Qualiseal NEW 1336763
From Volvo dealer. It is a washer. (great name) part number 1336763
They get it from Genuine Classic Parts.
P.S. from Volvo Sweden.
about two weeks.
With forum discount
£8.59 delivered.
From Dai ... Cylinder head blanking plug B200 & B230
Part C 1336763 ...
£11.39 delivered. apparently in stock.
P.S. from Brookhouse CYLINDER REAR RUBBER PLUG / BLANKING PLATE. FITS 240 MODELS WITH B200 / B230 ENGINES ... 1336763
£7.50. p&p probably £3.50? All plus VAT? so £13.20
I'm guessing all of these are therefore rubber. So fairly EASY to fit.
P.S. Yet another instance where a Volvo dealer gives the best price. FRF Volvo Swansea.
Thanks again Heckflosse.
*****
Now. Does it press fit by hand,
or gentle hammer tap with a socket as a drift, or ??
And. With or without sealant or lubricant ??
Please
Stephen
.