What This Part Is
This is the lower fairing on the driver's side of a Freightliner Cascadia. It mounts below the cab and forms the outer skin between the cab step area and the fuel tank fairing. Its job is aerodynamic — it keeps air off the tank, frame rails and rear wheels. It is a body panel, not a structural member, so nothing about the truck's load path changes when it is off.
The panel is a molded composite piece with mounting tabs and hardware bosses along the top and rear edges. Most trucks use brackets and rubber-isolated fasteners rather than a straight bolt-through, so the fairing can flex with cab movement instead of cracking at every mount point. Check the condition of those brackets while the old panel is off.
PartStop lists this as an aftermarket direct replacement built by Changzhou Yijiang Auto Parts Co., Ltd. We are not affiliated with, endorsed by, or authorised by Freightliner. The Freightliner number below is listed for identification only, so you can match what you already have in your hand.
Why These Numbers Cross
A22-67506-000 and A22-67506-004 share the same base casting family. The A22-67506 root identifies the lower fairing position and the left-hand side; the trailing three digits are a running change — revised mounting hardware, a trim detail, or a production-source change made during the model's life. The panel shape, the mount locations and the side remain the same across the suffix.
That is why a truck built with A22-67506-004 on the driver's side will normally come back to A22-67506-000 in an aftermarket catalog. The suffix tells you which revision left the plant; it does not tell you the panel changed dimensionally. If your old panel carries the -004 suffix, you are in the right listing.
Cross-reference is a starting point, not a fitment promise. Cascadia lower fairings vary with cab length, tank size and chassis options. Confirm by VIN with a dealer, or read the number molded into the back face of the panel you are pulling off, before you order.
How It Fails And What To Check
Lower fairings fail three ways: impact, fastener fatigue, and vibration cracking. Curb strikes and snowbanks split the leading lower corner. A steer or drive tire coming apart takes the panel with it. Over time the mount tabs elongate, the panel starts to buzz at road speed, and cracks run out from the fastener holes.
Before you order, pull the truck onto level ground and look at the whole assembly, not just the broken piece. Check every bracket and isolator for cracks, missing rubber, or bent tabs — a new fairing bolted to tired brackets will crack again. Note whether the old panel is left-hand and lower position, and photograph the molded number before it goes in the scrap bin.
A22-67506-000 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to A22-67506-000. 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 |
|---|---|
| Freightliner | A22-67506-004 |
Frequently asked questions
My old fairing is stamped A22-67506-004 — will A22-67506-000 fit?
In most cases yes, because both numbers describe the same left-hand lower fairing with a running-change suffix. The mounting pattern and panel profile are the same. Still confirm against your VIN or the number molded into the panel you removed, since Cascadia fairings vary with cab and tank configuration.
Is this the left side or the driver's side?
Left-hand, which is the driver's side on a North American truck. Lower fairings are side-specific and will not swap across the truck. If you are working from a photo or a parts list, verify the side before you order — the mirror-image panel will not line up on the opposite rail.
Do I need new mounting hardware with the fairing?
Plan on it. The brackets, isolators and fasteners take the same abuse that broke the panel, and reused hardware is the usual reason a replacement fairing cracks early. Inspect every mount point with the old panel off and replace anything elongated, cracked or missing rubber.
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
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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.