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  #1  
Old 06-11-2010, 03:39 AM
2.5Turbo's Avatar
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New vacuum pump differences?

I'm getting ready to replace my old style vacuum pump on my 300D and the vacuum pump page on the EPC made me ask...what's the difference between the two pumps listed (000 230 31 65 and 000 340 35 65)? The former says "as of engine number 016513" and the latter says "up to engine number 016512". I know what my engine number is and which one I should order, but what is the difference?

Searching the part number at ******** brings up a Pierburg pump without gasket for the 3165 number and a Hella pump with a dam gasket pictured for the 3565 number.

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  #2  
Old 06-11-2010, 05:20 PM
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The early W123 (77-80+-) pumps are a diaphragm type and the later (80-85) are piston, they are interchangeable, more or less. both are good pumps, not sure if this is what your asking.
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  #3  
Old 06-11-2010, 05:38 PM
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Answer

Quote:
Originally Posted by 2.5Turbo View Post
I'm getting ready to replace my old style vacuum pump on my 300D and the vacuum pump page on the EPC made me ask...what's the difference between the two pumps listed (000 230 31 65 and 000 340 35 65)? The former says "as of engine number 016513" and the latter says "up to engine number 016512". I know what my engine number is and which one I should order, but what is the difference?

Searching the part number at ******** brings up a Pierburg pump without gasket for the 3165 number and a Hella pump with a dam gasket pictured for the 3565 number.
there is a design change of the OM602 engine block = before/after engine number...

FYI:
Model: 300D 2.5
Chassis: W124.128
Years: 1990-1993
Engine: OM602.962 I5

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