01WS6BLACKLS1

Hello guys. I have a 2001 WS6 4l60e I am getting ready to install a transgo shift kit. I went to my local transmission shop today to pick up the 1-2 3-4 & foward pistons. My question is this. I have not dropped the pan yet just rounding up the last few things here. Are all three of these pistons the same? the number on all three pistons is "A74927B" I have looked on the web could not find anything concrete for a answer. TIA

mrvedit

The 1-2 and 3-4 pistons are the same; make sure you got aluminum ones as the plastic ones crack.
The forward piston in the valve body is much smaller.

01WS6BLACKLS1

O yeah. I did get the aluminum pistons. Wonder why in the world they would have done that?