Group A pump:

M18 x 1.5 inlet
M12 x 1.5 outlet

Std Cos 2wd filter

M14 x 1.5 both ends

got these sizes off pon,,,,,,,but i need to find the -6 fittings for them now so.....

what size is that in the other terms (metric,unf,bsp,-6 ect or whatever its called)

cos i cant find a -6 fitting to m18 fitting