The fitting is different. PH3 has a metal ring with a securing clip, PH2 and 1 has a 2 plastic clips on the hose. Easy enough to change the hose, its just clipped to the back of the block 
They wont fit cross phases.

They wont fit cross phases.
![[Image: car-1.jpg]](http://i1117.photobucket.com/albums/k591/grant-306/car-1.jpg)
Member of the 99% warning or you're nothing club
2000 Moonstone 1.8 Meridian - Sold
2000 China 3dr XS - Dead
1998 Diablo 3dr XSI