Breeze PS Hose Kit Fitting Leaks

This is not at all a knock on Mark at Breeze—he’s been very responsive and helpful—but I’m trying to figure out if others have run into this.

Has anyone had sealing issues at the rack fittings using the Breeze hose kit when stacking an O-ring with a Dowty seal?

I recently swapped my PS pump and replaced the donor lines (which were not leaking) to clean up routing. The new pump is much quieter, but now both rack fittings are consistently weeping. Not a heavy leak, but noticeable during the bleed process (haven’t driven it yet).

Details:
• Mustang rack with a small chamfer on both ports
• Verified fitment with O-ring only — fitting does bottom out
• Installed per instructions: O-ring first, then Dowty seal
• Lubed everything during assembly

Issue:
• Immediate weeping from both fittings
• Disassembled multiple times — seals look undamaged
• Mark sent replacement seals — same result

A mechanic I work with thinks it’ll only get worse. A local builder suggested the stacked seal approach itself may be the issue.
Looking to see:
• Has anyone else experienced this?
• Did you stick with the stacked seals or change setup?
• What actually fixed it?

Trying to avoid chasing this further if there’s a known solution.

I had a similar experience with my Breeze hoses and bought these fittings from Maximum Motorsports which included a small tube of Loctite hydraulic sealant. It seems to be working so far, but I only have 28 miles on my car.

https://www.cjponyparts.com/maximum-...4-005056b798c8

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Originally Posted by Jim Doak

I had a similar experience with my Breeze hoses and bought these fittings from Maximum Motorsports which included a small tube of Loctite hydraulic sealant. It seems to be working so far, but I only have 28 miles on my car.

https://www.cjponyparts.com/maximum-...4-005056b798c8

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Ok thank you very much!
Looks like LMR also sells that fitting kit and that’s exactly the application intended.
Appears to mimic the factory sealing method with the washers
Very much appreciated.

Quote:

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Originally Posted by Doc76

This is not at all a knock on Mark at Breeze—he’s been very responsive and helpful—but I’m trying to figure out if others have run into this.

Has anyone had sealing issues at the rack fittings using the Breeze hose kit when stacking an O-ring with a Dowty seal?

I recently swapped my PS pump and replaced the donor lines (which were not leaking) to clean up routing. The new pump is much quieter, but now both rack fittings are consistently weeping. Not a heavy leak, but noticeable during the bleed process (haven’t driven it yet).

Details:
• Mustang rack with a small chamfer on both ports
• Verified fitment with O-ring only — fitting does bottom out
• Installed per instructions: O-ring first, then Dowty seal
• Lubed everything during assembly

Issue:
• Immediate weeping from both fittings
• Disassembled multiple times — seals look undamaged
• Mark sent replacement seals — same result

A mechanic I work with thinks it’ll only get worse. A local builder suggested the stacked seal approach itself may be the issue.
Looking to see:
• Has anyone else experienced this?
• Did you stick with the stacked seals or change setup?
• What actually fixed it?

Trying to avoid chasing this further if there’s a known solution.

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I thought you were supposed to use one or the other, but not both, depending on whether you had a chamfer or not. It's been a while so can't recall. I didn't have any issues with the Breeze kit. In fact, those fittings were much easier to work with than some of the others I tried. I think they may be Aeroquip fittings, but not sure. High quality stuff.

Quote:

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Originally Posted by cv2065

I thought you were supposed to use one or the other, but not both, depending on whether you had a chamfer or not. It's been a while so can't recall. I didn't have any issues with the Breeze kit. In fact, those fittings were much easier to work with than some of the others I tried. I think they may be Aeroquip fittings, but not sure. High quality stuff.

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Per the instructions and confirmed with Mark, you stack two in a specific order when there is no chamfer. I thought it was odd stacking seals so confirmed with Mark.
When I said mine has a small chamfer, compared to other racks I’ve seen, mine has next to none. Regardless I tried it both ways without success.
I’ve seen the FFR supplied racks and they seem to have a much larger chamfer with a better chamfer quality. Perhaps that’s why the sealing method works at times?
My stock rack has threads running much closer to the top of the opening which I think impacts the sealing method

I've used the Breeze parts on several builds without issue. Including my current Mk5 build. Tested but not driven. Not expecting it to leak based on what I've experienced so far. The racks I've had with the Breeze parts all had a chamfer (hard to judge just how deep, but they were there) so I've never used his supplied Dowty seals. These bolts don't require much torque. Overtightening them will cause them to leak usually by damaging the O-ring. Push comes to shove if nothing else works, and I did this one build way back, is to clean everything up and JB Weld them in place. Yes, it sacrifices the fittings. You won't ever get them back out of that rack. But the fittings are relatively cheap. I did this after trying fittings from several suppliers, different O-rings, etc. I spent way more than if I had just sacrificed the fittings in the first place. Purists may not like this idea. But it solved the problem for me. No flaming please. :p

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Originally Posted by edwardb

I've used the Breeze parts on several builds without issue. Including my current Mk5 build. Tested but not driven. Not expecting it to leak based on what I've experienced so far. The racks I've had with the Breeze parts all had a chamfer (hard to judge just how deep, but they were there) so I've never used his supplied Dowty seals. These bolts don't require much torque. Overtightening them will cause them to leak usually by damaging the O-ring. Push comes to shove if nothing else works, and I did this one build way back, is to clean everything up and JB Weld them in place. Yes, it sacrifices the fittings. You won't ever get them back out of that rack. But the fittings are relatively cheap. I did this after trying fittings from several suppliers, different O-rings, etc. I spent way more than if I had just sacrificed the fittings in the first place. Purists may not like this idea. But it solved the problem for me. No flaming please. :p

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Thanks for the feedback.

I’m not quite frustrated enough to JB Weld it… yet ;)

Over-tightening was definitely a consideration, so I started very conservative—probably looser than ideal. I’m pretty OCD with this kind of thing, even more so on the second install.
When they kept leaking, I marked the fittings with a paint pen, removed them, checked the seals for damage, then reinstalled and snugged them slightly past the previous mark—progressively tightening. Both sets of seals leaked the exact same way and to the same extent.
I’m thinking the fittings Jim mentioned are likely the solution. They have a pronounced shoulder with what looks like a nylon washer, similar to the OEM setup.

Do you remember if you tried those?

Your writeup indicates o-ring first then washer. Not sure if you mean on the fitting or toward the rack, as best I can recall of what I did with the Breeze fittings is... at the rack fittings I did have an o-ring groove, so on the fitting, the washer went on first over the threads and then the o-ring. At my pump the fitting had no groove, so washer only.

Pat

The Mustang racks have an unusual sealing setup. They have a small sleeve that seats on the end of the factory fitting, sealing down inside the rack. I think you can use an ORB fitting and make it work. ORB= o-ring base, has an o-ring on the fitting, and a nut to compress the o-ring into the relief

Quote:

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Originally Posted by PMD24

Your writeup indicates o-ring first then washer. Not sure if you mean on the fitting or toward the rack, as best I can recall of what I did with the Breeze fittings is... at the rack fittings I did have an o-ring groove, so on the fitting, the washer went on first over the threads and then the o-ring. At my pump the fitting had no groove, so washer only.

Pat

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If I remember correctly, the instructions say to leave the O-ring on the fitting as shipped, and only add the Dowty washer if there’s no chamfer—so both end up stacked. That would put the O-ring under the fitting flange, with the Dowty last so it’s what actually seals against the rack surface.
I thought stacking them was odd, but it was explained that the Dowty provides a better seal and prevents the O-ring from extruding into the threads.

No issues at the pump or lines.

When I tried it without the Dowty (just the O-ring), the fitting shoulder nearly bottomed out by hand, so I didn’t go as far as filling and bleeding it in that configuration.
Sounds like you did it the opposite way—Dowty first, then O-ring (facing the rack port)—and it worked?
Also, the chamfer on my rack ports is barely there. I wouldn’t call it an O-ring groove compared to what I’ve seen elsewhere.

At this point, the only thing left to try is Dowty first, then O-ring last facing the rack port before trying the fittings Jim mentioned in post #2.

Don't overtighten; you'll either cut the ring or twist it out of place. All they need is snug.

Jeff

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Originally Posted by Jeff Kleiner

Don't overtighten; you'll either cut the ring or twist it out of place. All they need is snug.

Jeff

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Jeff have you used this kit?
If so are you able to speak to what configuration of stacking the seals worked for you?