No affiliation, spotted this on eBay. These things make hen's teeth look commonplace. Price of $289 is reasonable as-is but there's a Make Offer button if you want to risk losing it...
92-93 UPDATED 2002 MERCEDES THROTTLE W140 400SE 400SEL 500SEL NO ASR 0001417525
1992-93 S-Class ETA Throttle Body for cars without ASR. This part was pulled from a low mileage 1992 400SE in great running condition. The throttle body is an updated part with a date code of 2002 and as you can see from the pictures, it is very clean.
This ETA will work on W140 400SE 400SEL and 500SEL without ASR. It will also work on W124 400e's without ASR.
Reminder, this is a non-ASR throttle body and will not perform properly on cars equipped with ASR. Additionally, this ETA throttle body has the pancake style connector and will only fit cars with this type of connector. Part number compatibility is the responsibility of the buy.
Please feel free to ask any questions.
Remember, this works on NON-ASR cars only, as the seller clearly describes. Won't work on the 500E / E500.