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Thread: M73N Fuel Injector O-Ring Equivelant ....

  1. #1
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    M73N Fuel Injector O-Ring Equivelant ....

    Hello....


    What is an Equivalent Size for the BOTTOM O Ring (Part#13641437488) (9.93 x 2.62mm ),

    On The M73 Fuel Injector..I Am Trying To Source O-Rings for Cheaper Than $5 a Pop..


    Thank You !


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    1998 BMW 740iL - M62 - Projekt "Allyssa" ( Nicht Aktiv )
    2001 BMW 750iL - M73 - Projekt "Hanna" ( Aktiv )

    V12 Klubmitglied <3








  2. #2
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    Weren't you trying to upgrade the injectors at one point? How did that go?
    Last edited by Dan750iL; 06-18-2016 at 05:03 PM.

  3. #3
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    Yeeeeaaaaaaa....I Was....I Had Bought The BOSCH Gen-III Yellow "Mustang" Injektors.....

    But THIS is The Issue:



    It Is An "Air Shrouded Injektor" , BMW ONLY Used This Design For a Lil While in the E36, E38-M73, & Z3.....The Lil Inlet Tube on the Side of The Injektor Is To Help With Emissions & Fuel Atomization....Now In Order To Do The Regular Swap to ANY 15 Lb Injektor....This ENTIRE System Needs To Be Capped Off....It Can Be Done....And Some People Have Done It......The Only Draw Back That HAs Been Rekorded, Is That of a Little "Richness" During Idle Periods.....But Nothing Really Worth Noting....No Check Engine Kodes or Anything Have Been Reported From Doing This......I Just Never Found The Motivation To Kontinue Along With the Projekt....But As I Have Been Werking HEAVILY on the Fuel System as of Late......I#m THINKING About Resuming The Plan...löl
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    1998 BMW 740iL - M62 - Projekt "Allyssa" ( Nicht Aktiv )
    2001 BMW 750iL - M73 - Projekt "Hanna" ( Aktiv )

    V12 Klubmitglied <3








  4. #4
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    It's a Maddie sighting!!
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  5. #5
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    ^^ Hahahahaha ^^ .....Yeeeeeaaaaaaa....The RARE Unicorn of The E38 World

    - - - Updated - - -

    Alright Found Some O-Ring BOTTOMS For $0.87 Each!!!!...$24 For 13 .....Not Bad ..

    http://www.shopetsonline.com/product...yg0aAmur8P8HAQ
    MeinFacebook

    1998 BMW 740iL - M62 - Projekt "Allyssa" ( Nicht Aktiv )
    2001 BMW 750iL - M73 - Projekt "Hanna" ( Aktiv )

    V12 Klubmitglied <3








  6. #6
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    Quote Originally Posted by Miss BimmerLV View Post
    ^^ Hahahahaha ^^ .....Yeeeeeaaaaaaa....The RARE Unicorn of The E38 World

    - - - Updated - - -

    Alright Found Some O-Ring BOTTOMS For $0.87 Each!!!!...$24 For 13 .....Not Bad ..

    http://www.shopetsonline.com/product...yg0aAmur8P8HAQ
    Thanks for this - I have no idea how you found this since it doesn't seem to show up on google, but it is the best price I see for a single car (12/13) quantity.

    For higher quantities I found this one: http://www.kaldi.com/gasket-o-ring-nbr-9-93x2-62-12320 which unfortunately has a minimum order of $15, or about 33 O-rings. 36 with shipping comes to $31.07.
    I may go ahead and order there (if they even have enough stock) to have some spares.
    See my E38 parts for sale on eBay: click here!
    PM me here for a 5% discount on any of them!

    WTB/WTT: Ecru Walknappa (US Highline), and black rear armrests, non-skibag. Can trade skibag + skibag armrest.

  7. #7
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    I'm not adverse to saving money, but I would insure that the "O" ring base material is equivalent to or better than the OEM "O" ring.

  8. #8
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  9. #9
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    Hi MKIV

    That looks like a great kit. I am getting ready to replace the intake and valve cover gaskets on my 99 750il with 117k miles. I am deciding whether or not to replace the injectors while I have everything apart or simply test the resistance of each one and try to clean them out using carb cleaner and a 12 volt battery. As far as I can tell....my current injectors are working well and theres no sign to indicate a faulty or leaking injector but I was able to find a low price of $53 each for a set new Siemans VDO brand part 13641435991
    VDO part number
    A2C59514533. Have you had any issues installing the new filters from the ebay kit or removing them from the old injectors?
    I am still debating whether to simply replace mine with new VDO for about $640 or simply get the kit you purchased and clean my old ones thoroughly.
    If anyone out there has any suggestions...please let me know. Im not certain just how long an injector is expected to work properly and considering to keep this car for a very long time

    Thanks to all for their time and advice


  10. #10
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    it should be fine! first time i took the top end of the motor apart to do intake and valve cover gaskets as well as the plugs, wires, CCV boot+valve, distributor caps, coils, etc- injectors sealed fine. after repeated disassembly, my o-rings no longer seal.

    as long as you're careful and follow directions, the kit should be good for you. in the event that you damage an injector, i'd get one of those $53 ones- sounds like a good deal.o o

    also make sure your knock sensors are good, i had to open everything up again because mine decided randomly to fail.

  11. #11
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    I pulled the trigger and ordered the new VDOs for $645. Also getting the CCVs and pricing out both knock sensors...cant believe they cost $120 each. Trying to find a genuine BMW or Bosch units...rather not risk buying a cheaper brand since these sensors are a pain to get to.

  12. #12
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    the only thing i cheaped out on was knock sensors, got Duralast lifetime warranty ones from autozone and immediately solved my problems. been 10k miles and no issues

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