It seems the filter for my 2018 400I is a bit scarce in the US or three times the price(with shipping) from overseas. So I'm considering using an HF566 in place of HF568. The 566 is 4mm shorter which I can easily make up for in the filter cap spring. But I haven't compared the inlet ring of the filter yet. Any thoughts or experience?
Update: Found the HF568 for a good price online.
