Part Number Explanation? - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 11-12-2007, 02:13 PM Thread Starter
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Part Number Explanation?

Can anyone tell me what the part number breakdown is? For example I assume that PN 210 685 00 91 goes to a W210 Chassis. Other than that I have no idea. Does anyone have an explanation or a decoder?

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post #2 of 3 (permalink) Old 11-12-2007, 02:59 PM
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Generic parts like nuts and bolts and fluids often have 000 or 001 prefixes.

Second three digits refer to Mercedes' component "group" system


Sometime parts are common between C, E, or S class, and you'll then see part numbers from "another" car applicable to yours. Depends which car came out first.

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post #3 of 3 (permalink) Old 11-12-2007, 03:23 PM
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There is no "decoder". There is a general theme Mercedes uses to number parts in order to achieve a certain level of consistency. The first three digits may refer to the chassis the part was originally designed for (210 in this case). Digits 4 and 5 generally refer to the group in which the part is referenced both by parts and service manuals (68 in this case). Digits 7 and 8 generally refer to the version of that particular item. The rest, AFAIK, seems arbitrary. The numerical sequence of 210 685 00 91 would be 685 91 210 00.

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