W124 bosch fuel pumps

Discussion in 'Engine' started by Klasse, Mar 30, 2014.

  1. Klasse

    Klasse New Member

    Messages:
    4
    Joined:
    Mar 26, 2014
    Car:
    W124
    The fuel pumps (twin pump setup) on my 1990 260E appear to have had it. They are noisy and delivering half the fuel the should.
    New bosch/mercedes replacements are fearfully expensive so I'm looking at the options. Early 6cyl 124s had a single pump setup. Pattern pumps for those are cheap, but the later twin pumps are more difficult to find and expensive. Part number is bosch 0580254950 or mercedes a0020918801 replaced by a0030915301.
    There are some pumps on eBay that claim to replace that part yet appear to be exactly the same as those on the single pump setup, which is a different part number, others say different. I'm confused. All these bosch pumps and their copies look the same.
    Any ideas?
     
  2. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

    Messages:
    3,922
    Joined:
    May 11, 2011
    Location:
    Buckinghamshire, yuppie central 1985.
    Car:
    96 e300d, 88 w124 superturbodiesel, 90 bmw E30 v8, + "others"
    There are differing part numbers for the same pump, depending on the fitting kit that comes with it. However an early car with cis injection has different pumps to a later car with efi.

    As a rule, the earlier cis pumps are the better one's to have. I normally fit 2x bosch 0580254911 to a 6cyl car.
     
  3. kth286

    kth286 Hardcore MB Enthusiast

    Messages:
    2,923
    Joined:
    Feb 4, 2003
    Location:
    Caversham Berks
    Car:
    E320 Coupe
    My late 1995 124 6cylinder has the later (different type) single pump.

    Still going strong at 195,000 (ish) miles.
     

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