Yes. The RV Fuel Vault fits Thor Motor Coach motorhomes across the Super C, Class C, and Class A gas ranges — it is engineered for the Ford commercial chassis these coaches are built on.
Which Thor Motor Coach models does it fit?
The RV Fuel Vault is engineered for the commercial Ford (and Ram) chassis that Thor Motor Coach motorhomes are built on. Here is how the lineup breaks down:
| Chassis | Thor Motor Coach models |
|---|---|
| Super C (Ford F-550 diesel) | Magnitude, Omni |
| Class C (Ford E-450 gas) | Four Winds, Chateau, Quantum |
| Class A gas (Ford F53) | Hurricane, Windsport, A.C.E. |
Not sure which one you have? The fitment finder confirms your exact year, make, model, and floorplan in seconds.
Why Thor Motor Coach owners need it
Thor is one of the most popular motorhome brands on the road, which also makes them a familiar target for fuel thieves who know exactly where the cap is. Every Four Winds, Hurricane, or Magnitude leaves the factory with that cap exposed. The RV Fuel Vault bolts on a keyed, armored door to shut that vulnerability down.
- Stops fuel theft & siphoning — a keyed, virtually unbreakable door over the cap.
- Prevents contamination — no more open access to add water, sugar, or the wrong fluid.
- Built tough — 3/16″ fiber-filled polymer that is non-corrosive and resists prying.
- Factory-finished look — covers the ugly exposed cap for a clean, finished appearance.
Installation & pricing
The RV Fuel Vault is a bolt-on upgrade that most owners install in 8–15 minutes with basic hand tools — no drilling, no cutting, and no permanent modifications. Pricing starts at $109.95 (Founders Edition) for a single door, $219.90 for a set of two, and $329.85 for the 3-Pack that includes a DEF cover. Every order ships free in the Continental U.S. and is backed by a Limited Lifetime Warranty and a 30-day satisfaction guarantee.
Frequently asked questions
Does the RV Fuel Vault fit a Thor Four Winds or Chateau?
Yes. The Four Winds, Chateau, and Quantum are built on the Ford E-450 Class C gas chassis, and the RV Fuel Vault secures their exposed gas filler neck.
Does it fit a Thor Magnitude or Omni Super C?
Yes. The Magnitude and Omni are built on the Ford F-550 Super C diesel chassis, which the RV Fuel Vault is purpose-built to fit — and the 3-Pack also covers the DEF cap.
What does the Thor fuel door cost and how is it installed?
It starts at $109.95 (Founders Edition) per door with free U.S. shipping. Installation is a bolt-on job that most owners finish in 8 to 15 minutes with basic hand tools.
Lock down your Thor Motor Coach fuel cap
Confirm your motorhome fits and protect your fuel cap with the only purpose-built locking fuel door for RVs.
Check fitment & order →
See the Thor Motor Coach fitment page
More answers about the RV Fuel Vault