P11 Oil Filter Part Number

Good morning

Sorry for the slightly mundane questions - I left my parts manual in Australia (recently moved to Tokyo)....

I replaced my Oil Filter Bolt/Plug that goes into the P11 with a newer commando one (as the old one wasn't available). However, as the Hex is a much larger diameter it is a pain to get on and off.
I saw in a recent Andover Norton update that they have the old shape one in stock. However, there are two and the one that I think looks correct doesn't line up year wise (it is the 65-66 year item).
Anyway, wondering if anyone has the part number on hand, it will either be
-- NM25348 - OIL TANK FILTER 1966 to 1968 (1/2" I/D TUBE); or
-- NM19379, OIL TANK FILTER, pre 1965 (5/16"" I/D TUBE)

Thank you. Hoping to have the P11 on a boat over to Japan soon (it is in my shed in Australia at the moment).

Huw

NM25348

A hint is P11's were built between 1967 and early 1969, so the pre-'65 number would not be applicable. I double checked it on my P11 parts list.

Thanks - I know re: manufacture dates - but given the slightly patchy nature of some of the parts used, I thought I would double check!
The picture that I got of the 65-66 one looked closer to what I recall (but it was 2 years ago!).

Thanks for confirming, it is a big help.

Kind regards
Huw