Sadly thats not the case the "OEM" from like of Bosh may not to be the latest Spec. when Mercedes spec a part that is sent to say bosch they produce it, but when Mercedes devolpe the design for any reason then send the spec to bosch again who produce it for mercedes but Bosch still make the first spec for the facotrs etc etc so the bosch part may still not be up to scratch.I think there are three types.
MB Original Parts
OEM Parts made by approved MB suppliers (eg. Bosch, ATE, Pagid etc.)
Pattern parts made by other companies
I would happily use parts from the first two but not the third unless it was something cosmetic and not mechanical.
Please supply details of the Bosch filter and I will buy one and an also an MB one.We looked at a bosch fuel filter as avaible via factoers and a Mercedes Bosch one and they worlds apart in design etc and back up offered, the warranty given by mercedes far exceeds what you would get out side of mercedes.
Personally I find that really hard to believe. MB do not deisgn filters - they buy filters in to a certain spec - same with lots of parts like electrric motors etc. If the part has a Bosch p/n on it and an equivalent MB p/n then those two items will be the same quality.well obviosuly as model gets older i guess the develpment slows/stops BUT quality can still differ, ie a fuel Filter from Mercedes it made to the specs or mercedes, yet a bosch fiter maybe made from generic parts
We looked at a bosch fuel filter as avaible via factoers and a Mercedes Bosch one and they worlds apart in design etc and back up offered, the warranty given by mercedes far exceeds what you would get out side of mercedes.
Land Rover did the same their oil filter for the 200Tdi diesel. I was suspicious, and bought Crosland thereafter....A number of years ago , MB revised the design of screw-on oil filters as used in W124 and similar models - the new filter being about half the capacity of the old one .