B2 Pistion Guide P/N

[xp190]

Hi Guys

I'm rebuilding a 722.4 transmission, and as anyone else on this forum I have heard lots of horror stories of the B2 pistion failing.

I went to my local dealer, and asked for an upgraded B2 pistion guide ring, what I got was the B2 piston Cover...
I also found some manuals that say that the Plastic B2 guide ring is only for 722.3 transmissions, and the 722.4s keep the aluminum one, but they have the upgraded pistion itself, mine does for sure.

Would anyone with access please see if a part number exists for the plastic B2 guide ring, I would hate to put this transmission back together and into the car with the aluminum ring there.

Thank you

xp