I just restarted the project that has been dragging on for some time... replacement of the broken cabin sensor in my 300D. I got the part from Phil (126 830 17 72) but after uninstalling the old one I'm wondering if I have the right replacement part... see the pictures below of old and new parts. From left to right: old sensor, new sensor, both next to each other.

Well, I hope you can see these photos below... on my browser the eBay Motors ad gets in the way when I checked the pics - kind of annoying...

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K

What you've got (NEW) is the Heater Core Temp sensor. (See Pictogram)

What you want is the Cabin temp sensor.

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'84 300SD sold
124.128

I could not locate that in FastLane or AllParts... does anyone have a part number for the cabin temp sensor?

THx,
James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K

MB# 123 830 05 72

Fastlane: TEMPERATURE SENSOR
http://catalog.peachparts.com/item.wws?sku=1238300572




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ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/