What model do these bolt on? They seem to be for a 12 cylinder engine. 0 280 170 412 Cold Start Injector 0 438 101 024 Fuel Distributor (6 port) 0 438 121 042 Air Flow Sensor
You can probably find them on one of these sites? http://www.specialtauto.com/warm-up-regulators.html or http://www.boschusa.com/AutoParts/PartFinder/partfinder.asp Mark
I've got some 5-year old Bosch documentation that shows those PNs as all being used on "TR F113B...Kats". My guess would be that most, or all, would be used on the other TR versions with KE-Jet, but please check that.
The fuel dist. is TR, cold start, TR and a lot of MB, Air flow sensor also TR. This info is from experence and verified with a bosch parts program.
Better: http://www.bosch-automotive.com/ecat-online/ with pop up, then choose your language, then "Article Direkt Search", type the number, like 0 280 170 412, then search, then click on the number, next field open, then to "vehicle links" and you see the result, where this part is used! Juergen