Hello,

After extensive research, I have found that I have a 722.118 (300D, 77-81, 617.912 engine) transmission in my 1980 300SD Turbo Diesel, when it should be a 722.120 (300SD, 78-80, 617.950 engine) will this cause any problems?

The tail of the transmission where the speed sensor unit connects into the transmission needs to be replaced (inside of the transmission tail itself). Would it be worth it for me to rebuild the current transmission that is already in there or, should I purchase a 722.120 used transmission and rebuild that one instead?

Thank you!

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Nosce Te Ipsum "Know thyself"