Is this really the first locking fuel door for motorhomes?

Yes. Before The RV Fuel Vault, there was no locking fuel door engineered for motorhome filler neck geometry.

Does it fit my motorhome?

Ford E-350, E-450, F-550, F-600, F53, Workhorse, and Ram 5500 chassis. Use our Fitment Finder.

How hard is installation?

8-15 minutes with basic hand tools. No drilling, no cutting.

Limited Lifetime Warranty plus a 30-day satisfaction guarantee.

The Part the Factory Forgot

Locking Fuel Door for Motorhome — The Part the Factory Forgot

Your motorhome is the most expensive vehicle you own — and the only one without a locking fuel door. The RV Fuel Vault changes that with a 15-minute bolt-on install.

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

The Problem

✖Your motorhome is the only vehicle you own without a locking fuel door
✖Every car has one. Every truck has one. Your $100K-$500K motorhome does not
✖The factory left your fuel system completely exposed
✖No one made a locking fuel door for motorhomes — until now
✖Generic truck parts do not fit RV filler neck geometry

The RV Fuel Vault Solution

The first locking fuel door built specifically for motorhomes
Factory-finished look — your rig finally looks production complete
Tamper-resistant keyed lock provides real security
High-strength fiber-filled polymer — UV-proof, weather-proof
Bolt-on in 8-15 minutes — no drilling, no cutting
Fits all major chassis: Ford E-350, E-450, F-550, F-600, F53, Workhorse, Ram 5500

See the Difference

✖ 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.

Installs in 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

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 $99.95

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 64/085,223 · Est. delivery by July 4, 2026