Appreciate the info. This is the first 6.0 I've tore into. I swapped the rocker box back to the correct one. Now as soon as I get the oil cup o-rings I'll install them and should be good. Thanks again!I know this post is older but I think you may have an answer I'm looking for. Doing studs and front cover upgrade on my early 03 6.0. Now it'll hav the 100mm w/p. I found a good 6.0 that must be a late 03 04 because it has the wavy oil rails but still has 18mm dowels and has cast hpop cover with the aluminum pump. I needed the heads so I installed them but when I went to install the log style rail I quickly realized I messed up. Rocker cover mounting bolts are different compared to wavy style. Can I get different stand pipes to run the wavy style with my early 03 hpop? Thanks for your time if you ever read this.
Ok, I figured there was some type of seal in there that could fail. Do you have a part number or link to a new one? I'll do some digging to see if I can find it as well.I replace the entire j tube when I do a pump. There are o rings in there and I have never been able to source them
Were you getting a new J-tube or looking for individual J-tube o-ring part numbers?
The updated design J-tube part number is 3C3Z-9T288-AA (comes with the internal viton o-ring, teflon backer ring, and metal retaining ring.).
@DEEZUZ gave good advice - change the J-tube with any HPOP work.
I like these threads to contain the part numbers posted so people doing searches can find the answer (not having to re-create the work).
If you have found individual o-ring part numbers it would be great for you to post them, with their description.
For '03's that don't have the updated HPOP cover, it is a good thing to have: It is part #3C3Z-9G805-AA
The updated '04 HPOP cover part number (contains the IPR valve) is part #4C3Z-9G805-AA, I have been told that it fits the '03's also.
J tubes have all o rings installed. They even give you a bonus outlet d ring3C3Z-9T288-AA 03 thru 04 Super Duty OEM Ford High Pressure Oil Pump Discharge Tube 6.0L Diesel | Fairway Ford Parts
3C3Z-9T288-AA 03 thru 04 Super Duty OEM Ford High Pressure Oil Pump Discharge Tube 6.0L Dieselwww.fairwayfordparts.net
When I look at this part at fairway, it doesn't show all of the needed o-rings(white teflon, black, and metal ring). Do you guy supposed the o-rings are pre installed?
Thanks.
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Also it's good practice with all of these hpo o rings, once you roll them on, say the top D o ring on the j tube, to let them sit for an hour... Like resealing 7.3 heuis... You must let them sit and relax back into their size.
I use STP engine oil additive on all o rings. It's super thick and nice for pulling assemblies together.