As Slob says, you need an adaptor for it. I could not find anyone who sold them for my diesel though. You need a bolt like bit which gets a banjo bolt around it, essentially making a t-piece. This allows you to have the pressure gauge and the warning light functioning. I went for months with just the gauge whilst I ordered that was supposed to fit. After receiving about 4 different bits that would not fit, I got a mate to braize the two closest fitting parts together. The problem was getting the right thread sizes. None of the usual suspects and holden.co.uk and other like suppliers nevva had the bits either.
The tee pice must have a coarse thread as the thread in the filter housing requires same. the adapter for the pipe will be a much finer thread like that shown in the pic above.