In Reply to: O E M posted by RJ on October 17, 2001 at 13:32:01:
OEMs make OE parts, but the specs may differ. BMW dictates OE parts specs, while OEMs are free to change those they offer on OEM parts.
Fit should be same or close, but a change in specs (tolerance, material, etc.) can cut cost.
Decisions to switch must be made on a part-by-part basis. Eg., Balos are good rotors, Sachs make good pads, Iwis makes good chains, TRW makes good valves, etc., etc.
When a part such as a converter or muffler is OEM, does that mean the same manufacture as new but just without the BMW name on it etc.?
and is the part going to look basically the same or not?