Gen2 3.9L V8 - Intake Manifold Gasket Index

Lincoln LS

  1. DeviLSh

    DeviLSh Dedicated LVC Member

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    Wanted to make a new thread, as I cannot locate a comprehensive thread on LVC that lists all gaskets associated with the V8's intake manifold.

    There are a total of 6 Gasket locations that attach to the manifold assembly.

    1) Lower Manifold Gasket (2) (From spacers to head) - MotorCraft 2W9Z-9439-AA OR FelPro MS69293

    2) Upper Manifold Gasket (8) (From Spacer to Plenum)
    a. EBAY Seller
    b. TBD for other style seal (See picture below)
    3) Throttle Body to Eblow (1) (TB Gasket) - MAHLE G31842

    4) Elbow to Plenum (1) (Elbow gasket) - MAHLE G31844

    5) Plenum to Rear Cover gasket (1) - Jaguar AJ87992 OR the kit here: MAHLE MS19424

    6) EGR to Elbow (1) (EGR Intake side gasket) - Motorcraft 2W7Z-9D476-AA
    Thought this would be a good resource for anyone looking to replace gaskets, having it all in one place. We can update this thread for other vendors, pricing and reviews on the gaskets. Some other good links and images available here in the LS MAHLE catalog (I have had good results from this supplier)

    Regarding Item 2b above:
    I am on the quest to find a set of upper seals as I approach my intake manifold replacement project. I have searched ebay, Jag sites, Ford/Lincoln sites, etc - and have not been able to locate a set of uppers yet that match the ones I removed.

    This image below shows the comparison of the kit from 2a above, vs what I found when I cracked open the upper/lower version of a spare 2006 manifold I have. Note the lack of large black tabs on my OEM red gaskets that are present of the replacements.

    35299736382_51bede1d06_z.jpg

    If anyone has access to a set of these gaskets pictured, please share. Otherwise one might have to get creative, order an entire assembly ($$$) or reuse.

    Pic for reference of gasket locations:
    s6x~us~en~file=n0005345.gif~gen~ref.gif

    s6x~us~en~file=n0037013.gif~gen~ref.gif
     
    Last edited: Jun 22, 2017
  2. SeaPro

    SeaPro Active LVC Member

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    I have reused these gaskets with no issue. They are silicone and appear to be very durable. I know others here will probably spaz on the thought, and honestly given the trouble of doing this work I would agree, but in a pinch it worked for me.
     
  3. DeviLSh

    DeviLSh Dedicated LVC Member

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    Just ordered these, as they appear to look like the ones from my donor LS manifold. Looks like late LS's might have began using parts from LandRover. About $10 each shipped, or $80 for the set.

    Item 2b:
    LR006678

    I will confirm fitment when they show up.
     
  4. 1LoudLS

    1LoudLS Dedicated LVC Member

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    damn, 10 bucks a pop for a rubber ring?
     
  5. DeviLSh

    DeviLSh Dedicated LVC Member

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    They probably sell very little of these and when they do its usually for the Rover or Jag, so par for the course. Some LR and Jag owners have spotted leaks from these, so at least they are available for us - beats paying god knows what for a used or NOS complete manifold. You can get the whole set for $68 shipped on ebay too, little better. Some of the kits include the metal lower gaskets too.
     
  6. GreyWisent

    GreyWisent Active LVC Member

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    Sorry to revive this thread. Any more updates? Has anyone else taken these apart and would like to share their findings on the tabbed vs non-tabbed upper manifold gaskets?

    Is there a consensus on the risk of using possibly inferior "aftermarket" replacements (no name from ebay, etc.) vs just keeping the old ones one?
     
    Last edited: Sep 12, 2018
  7. Andrizzle

    Andrizzle Dedicated LVC Member

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    I put gasket maker on both sides of the OEM gaskets and put it all back together. Working like a charm.
     
  8. GreyWisent

    GreyWisent Active LVC Member

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    What year is your LS? V8, V6?
    (Edit: looks like you have a 2004 V8. Sorry, but the mobile site doesn't show signatures)

    Did your original gaskets have tabs or no? You didn't get any pictures, did you?
     
    Last edited: Sep 13, 2018
  9. GreyWisent

    GreyWisent Active LVC Member

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    Also, is there a guide for separating the upper and lower manifold anywhere?
    Torque specs?

    Do the tabbed gaskets have a part number? Or what other vehicle do they fit, so I'll take it from there?

    (the non-tabbed ones are LR006678 from Rover, as noted above)
     
  10. Andrizzle

    Andrizzle Dedicated LVC Member

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  11. GreyWisent

    GreyWisent Active LVC Member

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    Awesome! Thanks Drizzle!

    If your 04 has the tabs, the probably so does my 03 - as I understand it, the tabs went out in later versions.
    (@Andrizzle please, please, correct me if those were from a different year).

    Did you have any torque specs for torquing the upper and lower manifold together (or instructions)?

    For indexing, here's one of the images Andrizzle posted in the thread he mentioned above, of his 04 Gen2 V8:
    tgd4r4b-jpg.jpg
     
  12. GreyWisent

    GreyWisent Active LVC Member

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    Looks like the Jag XJ8 (also running the AJ-V8 engine, like the S-type and our beloveds) uses similar seals: xj8 intake reseal - Jaguar Forums - Jaguar Enthusiasts Forum

    Don't know if they're the same size. Looking for a part number, but those Jag folks seem to have the same issues. Aftermarket also made by Euromarqueautoparts (out of Houston) who sell the same thing for the LS on eBay.
     
  13. GreyWisent

    GreyWisent Active LVC Member

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    Rover 4526549 look very much like the tabbed ones. Check it out on ebay. They're from the Discovery 3 (LR3), Range Rover & RR Sport.

    IMO, at $10 a pop for the aftermarket, might as well spend the $15 (eBay price) and get the OEM ones.

    Also on Amazon and
    ($13, US shipping) Intake Manifold Upper Seal - Land-Rover (4526549) | Genuine Land Rover Parts
    ($13) Genuine Land Rover - Inlet Manifold Gasket - 4526549
    4526549 | Gasket - Land Rover Part 4526549
    www.land-rover-parts-shop.com/en/ui/search.php?q=4526549

    s-l1600.jpg
     
    Last edited: Sep 13, 2018
  14. lincoln_zero

    lincoln_zero Dedicated LVC Member

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    Stagshop Prices :p
     

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