What makes The RV Fuel Vault the best locking fuel door for RVs?

It is the only fuel door purpose-built for motorhome filler neck geometry. Generic truck parts and universal caps leave gaps, rattle, or do not lock properly on RV chassis. The RV Fuel Vault is precision-engineered for each chassis platform.

Does it fit my specific RV?

The RV Fuel Vault covers Ford E-350, E-450, F-550, F-600, F53, Workhorse W22/W24, and Ram 5500 chassis — which accounts for virtually every motorhome in production. Use our Fitment Finder to confirm your exact year, make, model, and floorplan.

Is installation really that easy?

Yes. Bolt-on install in 8-15 minutes with basic hand tools. No drilling, no cutting, no permanent modifications. 100% reversible.

How does it compare to chrome fuel doors?

Chrome fuel doors are cosmetic only — no lock, no tamper resistance, and they often do not fit RV filler necks properly. The RV Fuel Vault provides a factory-finished look AND real keyed security in one product.

Limited Lifetime Warranty against defects in material and workmanship plus a 30-day satisfaction guarantee.

The Part the Factory Forgot

The Best RV-Specific Locking Fuel Door — Built for Motorhomes, Not Trucks

The RV Fuel Vault is the only locking fuel door engineered from the ground up for Super C, Class C, and Class A motorhomes. Factory-finished look. Real security. No compromises.

Order Now — From $139.95

Patent Pending Made in USA Free Shipping Ships July 2026

The RV Fuel Vault — Locking Fuel-Door Enclosure — locking fuel door for motorhomes

Why a Locking Gas Cap Is Not Enough

✖Every motorhome leaves the factory with an exposed, unlocked fuel cap — no fuel door at all
✖Generic truck fuel doors and universal locking gas caps were never designed for RV filler neck geometry
✖Chrome accessories are cosmetic only — they look nice but offer zero real security
✖Fuel theft, siphoning, and contamination cost RV owners thousands every year
✖Your $100K-$500K motorhome deserves better than a bare plastic cap on the side

Why a Locking Fuel Door Beats a Locking Gas Cap

The only locking fuel door purpose-built for motorhomes — not adapted from truck parts
Factory-finished look eliminates the ugly exposed cap and completes your rig
Tamper-resistant keyed lock stops fuel theft, siphoning, contamination, and vandalism
High-strength 3/16 inch fiber-filled polymer — UV-resistant, all-weather, virtually unbreakable
Bolt-on in 8-15 minutes — no drilling, no cutting, no modifications to your RV
Fits Ford E-350, E-450, F-550, F-600, F53, Workhorse W22/W24, and Ram 5500 chassis

Before & After: Your RV's Exposed Fuel Cap vs. a Locking Fuel Door

✖ Exposed cap — no security

✓ RV Fuel Vault installed

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Factory-Finished Look

Eliminates the exposed plastic cap. Your rig finally looks production complete.

Fuel Theft Prevention

Keyed lock stops siphoning at campgrounds, rest stops, and storage facilities.

Contamination Defense

Prevents sugar, water, or foreign substances from being added to your fuel tank.

Vandalism Protection

Tamper-resistant design deters opportunistic damage to your fuel system.

How It Installs — 8–15 Minutes, No Drilling, No Cutting

8–15 Minutes

Average install time

Basic Hand Tools

No special equipment needed

100% Reversible

No drilling, no cutting, no mods

Compatible RV Models — Which Locking Fuel Door Fits Your Motorhome?

The RV Fuel Vault fits every major motorhome chassis platform in production today — from Class C gas rigs to Super C diesel beasts.

Manufacturer	Models / Floorplans
Ford E-350	Class C Gas — Coachmen, Thor, Winnebago, Jayco, Gulf Stream, East to West, Forest River
Ford E-450	Class C Gas — Coachmen, Thor, Winnebago, East to West, Entegra, Jayco, Nexus, Phoenix
Ford F-550	Super C Diesel — Thor Magnitude/Omni, Dynamax, Entegra Accolade, Jayco Seneca
Ford F-600	Super C Diesel — Thor Magnitude/Omni Super C, Entegra Accolade XL
Ford F53	Class A Gas — Coachmen, Thor, Winnebago, Tiffin, Fleetwood, Newmar, Holiday Rambler
Workhorse W22/W24	Class A Gas — Coachmen Mirada, Pursuit; Thor Windsport, Hurricane
Ram 5500	Super C Diesel — Dynamax Isata 5, Grand Design Lineage

Don't see your model? Use the Fitment Finder — we likely fit your rig.

Frequently Asked Questions

Common questions about The RV Fuel Vault

Not Sure If It Fits Your Rig?

Our Fitment Finder checks your exact year, make, model, and floorplan in seconds.

Find My Fit

Order Today — Starting at $139.95

Single Door, Set of 2, or 3-Pack · Free Shipping · Limited Lifetime Warranty · 30-Day Guarantee

Order My RV Fuel Vault

Proudly Made in the USA · Patent Pending · Est. delivery by July 31, 2026