Hmmmm….. mine is an earlier 4, so I haven’t seen your particular type, but Moss Europe parts list states:
138308 PIPE, (nylon), replaces flexible pipe
Notes: The nylon pipe replaces the flexible hose and rigid pipe in that it goes direct from the pipe (200646) to the oil pressure gauge. Listed as an 'alternative' to 202793 in the Triumph parts book, but standard on all TR4A's. These items are the same whichever filter head is fitted
that implies you still need to connect the nylon pipe to 200646 which has the banjo connection on it. Don’t forget to put the copper washer with the larger hole next to the filter head, the smaller one on the outside.
……… Andy