As my original air cleaner needed replacing, I looked around to see what was on offer. I was rather astounded at the price some of the usuals were asking, so so searched the internet and found a suitable replacement was available from ‘In_filters’, for £28 plus vat.
The photos show that it is about 1\2 inch short, but this can be taken up by making a simple gasket from a piece of foam. The bore requires a top hat bush in order to sleeve it down to the diameter of the central rod.
The part is Baldwin P5504
The power steering filter is Baldwin P183 which is about £10.