What This Thing Actually Does
A hose separator isn't glamorous — it's a bracket, usually mounted up near the nose of a tank trailer or on the frame rail, that holds your service lines, emergency lines, and electrical cord apart from each other. Without one, or with a cracked one, those lines rub together on every bump and eventually you've got a chafed-through air line at 2am somewhere outside Ellensburg.
This one, 11549, shows up across a bunch of tank trailer builders — Beall, Heil, Brenner, McKenzie Tank Lines — because a lot of them used the same Midland or Mack-sourced separator when they built trailers. That's why you'll see it stamped with different numbers depending on who ordered the batch.
It's a straightforward wear/replace item. No calibration, no adjustment. You pull the old one off, bolt this one on, done.
Why All These Numbers Cross
Midland made a lot of the underlying hardware (100469D, 100469C, 1004690) and supplied it to Mack, Volvo, and various trailer builders who then stamped their own part number on the box — that's where Mack's 10QE125P1 and 48RU21156, Volvo's 3099107, and the tank-builder numbers like Heil's 9729-0001 or Beall's 3012046 come from. Same physical bracket, different paperwork trail.
There's not much to 'get wrong' on a separator — no spline count, no seal size, no drum diameter to worry about like you'd have with a brake part. The main thing to check is mounting hole spacing and overall bracket shape, since a few trailer builders modified the stamping slightly for their own frame layout.
Surest way to confirm: pull the old separator off and match the number stamped or cast into it against our cross-reference table. If it's too rusted or worn to read, measure hole spacing and bracket width and call us — we've got the Midland base numbers memorized at this point.
Ordering From PartStop
We're in Tacoma and keep hose separators like this one in stock because tank trailer outfits and heavy-truck fleets around here go through them steady. Same-day pickup if you're local, and we ship nationwide if you're not.
At $13.99 it's not worth agonizing over — order it, and if the mounting doesn't line up with your old bracket, send it back within the warranty window and we'll sort you out with the right one.
Every part we sell carries our 6+ month warranty. We're not going to tell you it's a guaranteed fit sight unseen — nobody honest can say that on a cross-reference part — but between the number match and a quick measurement, you'll know before it ships whether it's right.
11549 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 11549. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Volvo | 3099107 |
| Mack Truck | 25167851 |
| Mack | 10QE125P1, 48RU21156 |
| Midland | 100469D, 100469C, 1004690 |
| Beall Trailers | 3012046 |
| Brenner Tank Inc | CP-A-215 |
| Heil | 9729-0001 |
| Mckenzie Tank Lines | 13201005 |
| Aftermarket | 12-26901, 17-150, TR-021S115 |
Frequently asked questions
Does 100469D fit my Mack tractor?
Midland's 100469D is one of the base numbers this bracket crosses to, and Mack used Midland-sourced separators on a lot of their trucks, so it's a likely match. Pull your old bracket and check the stamped number or measure the mounting holes against ours before you order — that's the only sure way with a part like this.
Is this the same as the Heil 9729-0001?
Functionally, yes — Heil used this same Midland-based separator on trailers they built and put their own part number on it. It should interchange, but confirm by comparing your old bracket's hole spacing and shape since Heil occasionally spec'd small mounting differences for their frame design.
How do I know which number applies to my trailer?
Check the tag or stamping on your old separator first — that's your surest reference point. If it's too corroded to read, bring it in or send us a photo with a tape measure on the mounting holes and we'll match it against the Midland, Mack, and trailer-builder numbers in our cross-reference.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.