W123 Transmission Question?
 

Question about W123 transmissions...

I have an 81 300D non-turbo sedan and on my data card the transmission number is 02 127905. I know the "02" denotes that it is an automatic transmission but is the rest of the number a serial number specific to my transmission only? Or is that number a general part number for these transmissions? For example, if I'm looking for a replacement transmission, would I be looking for another one with the number 02 127905 or am the only one that has that number because it's my transmissions serial number?

I ask because my transmission is shot and I found another 81 300D sedan and the transmission number on that data card is 02 134567. I'm pretty sure they are the same transmissions, they are from the same year/era but the different numbers through my off. Then I figured it was more likely a serial number specific to the vehicle and not a part number. Can anyone confirm?

Serial numbers.
The transmission type is 722.3xx.
The numbers are stamped into the pan rail on the right side of the trans, just above the edge of the pan gasket.

What exactly is the transmission not doing?

You can suddenly lose forward motion when your B2 piston breaks. It happened to me.

What exactly is the transmission not doing?

You can suddenly lose forward motion when your B2 piston breaks. It happened to me.

Happened to me too. While I was waiting for the tow I read your thread. I later made your diy puller tool and got the bushing out. Funny that happened a decade ago but I recalled it while reading this. Thanks for that…300D MAN.

http://www.peachparts.com/shopforum/diesel-discussion/366040-blew-my-b2-piston.html

Tranny Woes
 

Subscribed to find out how this ends and learn more .