OIL HPX plug??
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Cargo Master
Joined: Mar 2008
Posts: 2,975
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From: Archdale,N.C.
OIL HPX plug??
Hey guys, my sons 99 7.3, the HPX on the oil side started leaking, we don't have the stock plug to put back in. Is there a big box store equivalent that anyone has used? Thanks
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I doubt it, try a hydraulics shop. I think there are three of those plugs in each head so pull one of them and take it with you. They are some kind of ORB but I can't remember what size. And you might want to replace the O-ring on the one you take out.
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Probably gonna contact Clay at RiffRaff and get a new one sent out.
It was on the truck 15ish years before a leak, my son may have actually bumped it while doing something else under the hood.
Laughing Gas
Joined: Mar 2021
Posts: 1,118
Likes: 425
5/16 "-5" o-ring boss plug. You'll only be able to find that at a hydraulic supply shop. To fix the leak you likely just need to replace the o-rings on the fittings.
I imagine that viton o-ring pack at harbor freight would have one that'd fit
I imagine that viton o-ring pack at harbor freight would have one that'd fit
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
The thread is a 1/2-20 sae so it's pretty easy to match. If you don't have any luck let me know I've got some rolling around in a drawer I could mail to ya. They're my old ones from before ditching the o rings all together.
Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
Hydraulic shop will have the -5 ORB ring or here is a link.
https://www.riffraffdiesel.com/oil-r...ug-o-ring-kit/
https://www.riffraffdiesel.com/oil-r...ug-o-ring-kit/
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