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Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


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Oil Rail End Plug Gasket/O-ring Set

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Part Number:

Oil Rail End Plug Seal - Ford 7.3L (94-03) - GZ-15-006

Sealing o-ring for high pressure oil rail plugs end plugs. There are two oil rail plugs on each head. This is the special o-ring/seal for these plugs. Each plug requires 1 o-ring/seal.

Genuine Navistar OEM seals.

The seals on the oil rail plug has been upgraded to a single piece. The old style seal required 2 o-rings of different size and was prone to leakage.

Order of 1 is 2 plug seals

Ford and Navistar's instructions recommend the use of LocTite 277 threadlocker on the Oil Rail End plugs

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Product Reviews

  1. End plug seals 5 Star Review

    Posted by on Jan 24th 2018

    Great product. Add a little oil to the seal and lock tight the threads and it will go right in and seal perfect.

  2. Quality stuff and great service 5 Star Review

    Posted by on Nov 2nd 2017

    I am in the process of rebuilding my 7.3 and i got to the rail plugs. Riff Raff was the easy first choice and i got them super speedy and great quality. Riff Raff also upped their sticker game with the new rubber emblems. Super impressed!

  3. Excellent products and service 5 Star Review

    Posted by on Feb 20th 2017

    I was unhappy when these o-rings did not arrive a week after they were expected. The USPS claimed the package was delivered to my mailbox and was very unhelpful. I turned to Riffraff for guidance and was informed that the package was not insured, however they stepped up and sent me a replacement order at no charge. I'm not sure they would have done this on a larger order, but I'm very impressed nonetheless. Excellent affordable products and exceptional customer service.

  4. Works great 5 Star Review

    Posted by on Sep 14th 2016

    Fixed my oil leaK!!!. Oil was running off the plug into my valley then down the back of the engine

  5. Oil leak 5 Star Review

    Posted by on Mar 17th 2016

    I had a bad oil leak on the back of the head from the plug. Replaced it with this o-ring and it was gone. Fast shipping and a great price. Definitely buy more from here.

  6. Great orings 5 Star Review

    Posted by on Nov 29th 2015

    These seals were perfect replacement. I used them while I had my motor out of the truck. Was a convenient time to change them. Highly recommend.

  7. Right Stuff 5 Star Review

    Posted by on Jul 22nd 2015

    Riffraff always has the good stuff.

  8. great product that saves money. 5 Star Review

    Posted by on Jul 7th 2015

    These are a great alternative to buying the whole plug assembly. I have used these in my and my family's PSD and they have been a permanent fix.

  9. Quality O-rings 5 Star Review

    Posted by on Jun 25th 2014

    Good quality o-rings, fit well.