Question: I have a w115 auto trans from a '75 300d and a gentleman who wants to put my working trans into his '79 w123 300d. Same trans or is the w115 trans not compatible with an early w123 car? Thanks!

What's the transmission number? I can look it up in my Passenger Car Data Booklet from 1980.

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

if it helps, i have a transmission from a w116 in my w123. 722.120 type.

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1981 NA 300D 310k miles

Thanks! Will track down number!

Good to know, thank you!

The underlying answer is yes. Both are 722.1xx transmissions.

Thank you!

Whilst the transmissions are both 722.1s I think you might have to be a little bit more careful.

Looking on EverythingBenz - Mercedes-Benz Forum and Web Search Using Google the transmission for a 75 300D (240D 3.0 to be specific) is a 722.109

The 79 300D 123.130 has a 722.118. There are two types of 722.118 transmissions though - one with vacuum one with out. Check out the throttle linkages. There could be some messing about needed...

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Thanks Stretch!