What makes The RV Fuel Vault different from a locking gas cap?

A locking gas cap only secures the cap. The RV Fuel Vault is a full enclosure that covers and locks the entire filler neck area — providing dramatically better security and a factory-finished appearance.

Will it fit my motorhome?

We cover Ford E-350, E-450, F-550, F-600, F53, Workhorse, and Ram 5500 chassis. Use our Fitment Finder to confirm your exact model.

How long does installation take?

8-15 minutes with basic hand tools. Bolts to factory mounting points — no drilling or cutting required.

Absolutely. UV-stabilized fiber-filled polymer, stainless hardware, and a dust-shielded keyway that handles any climate.

Limited Lifetime Warranty plus a 30-day satisfaction guarantee.

The Part the Factory Forgot

Motorhome Fuel Security — Real Protection, Not Just a Locking Cap

Your $150k+ motorhome deserves better than an exposed fuel cap. The RV Fuel Vault is the only heavy-duty locking fuel door enclosure purpose-built for motorhome fuel systems.

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

✖Your motorhome left the factory with zero fuel port security
✖A locking gas cap provides minimal protection — thieves defeat them in seconds
✖Exposed fuel systems invite siphoning at campgrounds, rest stops & storage lots
✖Fuel contamination (sugar, water, debris) can cause thousands in engine damage
✖No RV manufacturer offers a locking fuel-door enclosure from the factory

Why a Locking Fuel Door Beats a Locking Gas Cap

The first complete fuel-security enclosure purpose-built for motorhomes
Heavy-duty construction — not a flimsy cap or chrome cover
Tamper-resistant keyed lock prevents siphoning and contamination
Factory-finished appearance — your rig looks production complete
Bolt-on in 8-15 minutes — no drilling, no cutting, no modifications
Fits Ford E-350, E-450, F-550, F-600, F53, Workhorse, and Ram 5500

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

✖ Exposed — zero security

✓ RV Fuel Vault installed

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Anti-Siphon Protection

Keyed enclosure makes it impossible to access your fuel cap without the key.

Contamination Defense

Sealed enclosure blocks sugar, water, and debris from reaching your fuel system.

Vandalism Deterrent

Heavy-duty construction deters opportunistic damage to your fuel port.

Factory-Finished Look

Eliminates the exposed plastic cap — your rig finally looks complete.

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

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