Hi, me and my dad are having a hard time. We had the b2 piston break in his 300td a couple of months ago. We finally got it back together and it drove it around the block and it lost all forward gears again. We took it apart and found the O-ring that goes between the b2 piston and transmission broke. Anyway I ordered one from a place in AZ. that one turned out to be too small. So I ordered one from peach parts and it also was the same way. Then we ordered one from the mercedes dealer and the one they gave is too big. None of the them will fit in the grove of the bore. We already spent $50 on O-rings that don't fit. Does anybody have any ideas?

Heres the serial number off the side of the transmission
123-270-78-01-722-315-02-5539

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'83 300SD with 240k
'85 300TD with 435k
'98 Ram 2500 diesel 140k

call Roy from the Buy Parts link above, he will have the correct parts, and get them to you.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!