W123 Mercedes year-specific parts!
 

Hello everyone,
In the line of providing a solid body where enthusiasts can obtain references and clear compatibility doubts, I would like to start a thread on parts that are specific to certain model years to avoid confusion –and hopefully, save some unnecessary surprises to the DIY'er.

I would like the moderator(s) to fill in the blank spaces with the additional information that our fellow members will be compiling on this thread!

Here's a few I know of...

1977
-First year of the "evil servo" (300D) all the way to 1981.
-First year of the vacuum cruise control modulator.

1978


1979
-First year of the solid 2nd row seat in wagon models.

1980
-Last year of the blue, double-pod vacuum door lock actuators.

1981
-First year of the turbo engine, the OM617.952; the OM617.951 in 1981 wagons had...

• Different oil pan design.
• Different oil filter housing.
• Different oil cooler lines.
• Different oil pressure sender.

-Only year with electric speedometer in wagon models.
-First year of the "standard" W123 climate control module.
-First year of the split second row seat in wagon models.
-First year of the electronic cruise control (not vacuum).

1982
-Last year of the flat metal roofs in wagon models.

1983
-Last year of the manual climate control in the US (240D only).
-First year of the roof rubber strips for luggage in wagon models.

1984


1985
-Only year with a 2.88 diesel differential as opposed to the 3.07.
-722.416 Transmission (California models only).
-Only year for California emissions models (different engine bay layout):

• Air cleaner design + hoses + brackets
• Trap oxidizer and computerized EGR
• Fender tach amp to control EGR

-Unque climate control relay
-Higher stall speed torque converter
-Seatbelt pretensioners and control unit
-"Blue saucer" transmission modulator

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Help me complete this list!