Fuel filter replacement on BMW E34 - BMW Guide The fuel filter shall be replaced at every Inspection II Service. This repair instruction is written for a E34 535i but is applicable for all E34 models with the 540i as the exception which has a dual fuel filter Author: BMW Guide Fuel Filter replacement - 94 530i e34 - The Ultimate BMW Feb 23, 2007Hey everyone, Went to the local mechanic for a quote on replacing the fuel filters on my 94 530i and was told one hour per filter - $140 total labor. I already have the filters, I just couldn't find the damn things on my car. The mechanic was nice enough to give me a point as to where to look. He stated they are directly under the driver and passenger seats, a seperate panel covering each one.