What You're Actually Buying
This is the whole umbilical between tractor and trailer in one kit: two service/emergency gladhands (already crimped to hose) plus a 3-in-1 cable that handles power, ABS, and marker lights through a single bundled jacket. Fifteen feet is standard reach for most day cab and sleeper setups without a bunch of slack dragging the ground.
It's meant for tandem-axle tractors pulling standard vans, reefers, and flatbeds — basically anywhere you've got a 7-way and dual gladhand setup on the back of the cab. If your rig runs a different cable count or a different plug style (like a 15-pin), this kit isn't your part, so check what's actually bolted on there now before you order.
These get replaced from age and abrasion more than anything else — rubber gladhand seals dry-rot, the cable jacket cracks from UV and road grime, and eventually air starts leaking at the coupler. If you're chasing an air leak or a dead ABS light on the trailer, this kit covers both ends of that problem at once.
Why All These Numbers Cross
Haldex R11451, Phillips 12-008PDC, Velvac 035042, Automann 179.3012.12 — these all show up because gladhand-and-cable kits get built to the same SAE/DOT air brake and lighting specs. Same coupler seat, same 3-in-1 pin configuration, same hose ID. Manufacturers stamp their own part number on a kit that's functionally identical to what the next guy's selling.
Where you can get burned is length and cable style. A 15-footer isn't interchangeable with a 12 or 20-foot kit just because the gladhands match — you'll either be short or coiling excess cable that snags on something. Also double check whether your 3-in-1 is the straight-cord style or a coiled cord; those aren't the same part even under a similar number.
Surest way to confirm: pull the old kit's tag or stamped number off the gladhand body or cable molding and match it against what's listed here, or just give us your tractor's VIN and we'll pull the OE spec off that.
Getting It From Us
We keep 11451 kits on the shelf here in Tacoma — if you're local, it's a same-day pickup, no waiting on a truck from Ohio. Ship it nationwide too if you're not close, and it moves fast because this is a high-turnover item for us.
Comes with the standard 6+ month warranty. If a gladhand seal fails or a cable pin corrodes early, bring it back — we're not going to make you fight for that.
One more time: confirm by your old part's stamped number or your VIN before you buy. Air line and cable kits look close enough alike across brands that guessing costs you a second trip.
11451 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 11451. 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 |
|---|---|
| Cross-Reference | TM3521JS, TR-029-1, 30-2151, 169127, PE13000, 451097, OTR6814, TM3521JE, 11441, 11470 |
| Velvac | 035042 |
| Haldex | R11451 |
| Phillips | 12-008PDC, 12-008, 30-2150 |
| Automann | 179.3012.12, 179.3025.12 |
| Torque Parts | TR813212 |
| Mack | 640-451119 |
Frequently asked questions
Does 11451 fit my Freightliner Cascadia?
Likely, if you're running a standard 7-way dual gladhand setup and need a 15-foot line, but confirm by checking the length and cable type on what's currently mounted, or give us the VIN and we'll check the factory spec.
Is this the same as the Phillips 12-008PDC?
Functionally yes — same gladhand and 3-in-1 configuration, built to the same spec. It's a different manufacturer's stamp on an interchangeable part, not an identical part number, so match the length and cable style before ordering.
How do I know if I need the 3-in-1 cable version versus separate lines?
Look at what's currently running from your tractor to the trailer — if it's one bundled cable carrying power, ABS, and marker lights together, you need the 3-in-1. If you've got three separate lines routed independently, this kit won't match your setup.
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.