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Old 12-04-2011, 03:43 PM
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Deciphering a Mercedes Part Number

Some tidbits I found about deciphering Mercedes part numbers. Mercedes usually uses this format 123 820 41 64 (3 digits, 3 digits, 2 digits, and 2 digits). This is the p/n for a Driver's side tail light lens for a 123.

-The first three digits (123 820 41 64) are the chassis the part was first used on. This number can also be the engine number as well as other numbers.

-The second set of three digits (123 820 41 64) refers to which Group the part belongs to (ie. brakes, suspension, etc...). 820 refers to Body Electrical. This number is also used in the Factory Service Manual, group 82 section with all the body electrical service info.

-The first set of two digits (123 820 41 64) refers to which version of the part it is. Meaning there could be several versions or runs of one, part each with a slight modification. We have the 41 version of the lens.

-The last two numbers (123 820 41 64)are the part number in the master listing. In the number above we have the 64th part in the Body Electrical Group.
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Old 12-05-2011, 11:06 AM
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The first two digit group can also refer to "left" or "right." If the left side is "41," then the right side would likely be "42" or "40."
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Old 12-05-2011, 11:10 AM
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Do you know about the extra 2 numbers you sometimes see on the end of the usual ten number part number? These numbers are sometimes used for special tools and things like bolts, nuts and washers...
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Old 12-05-2011, 12:56 PM
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Here are a couple informative links on the subject:

EPC-net Online - Guide to Parts Group System
EPC-net Online - MB Part Number Guide

Army, check out the ES1 code described in the second link.
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Old 12-05-2011, 01:08 PM
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Brilliant thanks for that KCM
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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Old 12-05-2011, 01:57 PM
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Quote:
Originally Posted by KCM View Post
Here are a couple informative links on the subject:

EPC-net Online - Guide to Parts Group System
EPC-net Online - MB Part Number Guide

Army, check out the ES1 code described in the second link.
Great links thanks!
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Old 12-05-2011, 02:43 PM
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Thanks,
I KNEW there had to be a system--not just arbitrary numbers.
I mean if Ford can have a system that originated in the Model A days and continues ( with modifications) to the current day, surely the Germans could have a system.
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Old 12-05-2011, 03:52 PM
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There's always method behind Mercedes' madness. Not to be confused with Mercedes Madness, which we all here suffer from. Karl Benz had Ford beat by 11 years. Benz made his first car, and had the first patent on a vehicle in 1885. Ford didn't make his first car until 1896.
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Old 12-05-2011, 04:00 PM
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Try Googling MB part numbers with the safe search off

It's always an eye opener.
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Old 12-06-2011, 12:47 PM
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Also in the old days, i.e. the ponton era, there would also often be a two digit prefix for a part number that indicated whether the part was for a sedan (#10), a cabriolet (#30) or a coupe (#37). To search those part numbers today, the prefix needs to be made a suffix or left off completely.
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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - being parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 216,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 17,000 miles
'14 Smart electric cabriolet 10,000 miles
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