Shane, they will work on the E400/400E but remember, your fog lamps will be replaced by driving lamps. The two have pretty distinct beam patterns. Won't you ever need your fog lamps?

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Rainmaker
93 500E, 43k mi, Pics of upgrade parts
Evo II Wheels on Dunlop FM901 235/45x17s
94 Facelift
RennTech CF Airbox
RennTech ASR Defeat
RennTech Chip
1st Gear Start
97 Range Rover 4.6 HSE Vitesse, Yellow, "Tonka" (sold)