350 Horizon MPI FUEL INJECTOR O RINGS

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by cfd95, Feb 24, 2018.

  1. cfd95

    cfd95 Member

    271
    Nov 5, 2013
    Northport Long Island
    2002 310 Sundancer
    350 Horizons
    V Drives
    I have to replace one injector on my starboard engine.
    I want to replace the o rings on all the injectors since the fuel rails have to come out.
    I can only find the mercruiser O rings for $11.00 and up for just 1. Thats insane.
    New Injector comes with O Rings so I need 14 more.
    Anyone know of any aftermarket O rings available.
    Injector Part# 861260T
    O Ring Part# 851889
     
  2. JohnGordon

    JohnGordon Member SILVER Sponsor PLATINUM Sponsor

    127
    Jul 19, 2010
    Traverse City, MI
    1999 330 Sundancer, 7.4MPI, V-Drive, 4.5 Westerbeke, Raymarine A98, Full Camper Canvas, Vitracore-So
    7.4MPI, V-Drive
    Ask an injector cleaner/tester. My local guy gave me all new o-rings for free when he tested my injectors. They are a standard GM part and you could probably get them at any parts store.
     
    Jetgod likes this.
  3. paulswagelock

    paulswagelock Well-Known Member

    Oct 25, 2010
    pa
    2018 SDX 270 OB 300 Verado
    Verado 300
    If you are pulling them all, why not get them cleaned and serviced. Only $10 or so per injector. They will replace all soft parts during the service.
     
  4. cfd95

    cfd95 Member

    271
    Nov 5, 2013
    Northport Long Island
    2002 310 Sundancer
    350 Horizons
    V Drives
    Thanks for the replies.
    I probably will have them flow tested its cheaper than buying the Mercruiser O Rings
    Im only replacing one because the connector on the injector is broken.
    I must have broken it doing the manifolds and risers.
     

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