Worse MPG with Denso Iridium 5304
i.e. 2005 C230k has the same engine. check if that part # is the same before ordering. from denso's site only the 05 is listed as "kompressor" I would've order that part instead of ordering for 2004.
I planned on getting plug from my 06 C280 but I just purchased the car and it only has 17K on it so they are not needed so I will wait to see how they perform on other members cars prior to purchasing.







