Is RV fuel theft really that common?

Yes and rising. With diesel at $4-5/gallon, a 50-100 gallon motorhome tank is a $200-500 target. Thieves know RV fuel caps are unprotected and can be siphoned in minutes. Campgrounds, truck stops, storage lots, and even driveways are all reported theft locations.

Why not just use a locking gas cap?

Locking gas caps are a minimal deterrent. They can be defeated in seconds with channel locks, a screwdriver, or even a sharp twist. They also do nothing to protect the filler neck from contamination. The RV Fuel Vault is a full door with a tamper-resistant lock — real security, not theater.

What about anti-siphon devices?

Anti-siphon inserts can clog, restrict fuel flow, and are specific to cap diameter. They also do nothing to prevent contamination or vandalism. The RV Fuel Vault addresses all threats with a single bolt-on product.

How quickly can I install it?

8-15 minutes with basic hand tools. No drilling, no cutting. Install it the day it arrives and your fuel is protected immediately.

How much does it cost?

Starting at $84.95. Free shipping. Limited Lifetime Warranty. Compare that to a $200-500 tank of stolen diesel or a $5,000 engine repair from contaminated fuel.

Stop Fuel Theft Before It Starts

The Best RV Fuel Theft Protection Is a Locking Fuel Door

RV fuel theft is rising across the country. Thieves target motorhomes because they know the fuel cap is completely exposed \u2014 no door, no lock, nothing. A siphon hose and 5 minutes is all it takes to drain your tank. Locking gas caps are easily defeated. The only real protection is a locking fuel door that covers the entire filler neck. That is exactly what The RV Fuel Vault does.

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

The Problem

✖RV fuel theft is increasing — campgrounds, truck stops, driveways, storage facilities are all targets
✖A standard fuel cap can be removed in seconds — no tools needed to start siphoning
✖Locking gas caps provide minimal deterrent — easily defeated with channel locks or a screwdriver
✖A 50-100 gallon tank of diesel is worth $200-500 — and completely unprotected from the factory
✖Contaminated fuel from sugar, water, or debris can destroy injectors and pumps — a $5,000+ repair
✖You lock your doors, your storage bays, your hitch — but your fuel has zero security

The RV Fuel Vault Solution

A full locking fuel door with tamper-resistant keyed lock — not just a cap, but a door that blocks all access
Covers the entire filler neck area — thieves cannot even see the cap, let alone access it
High-strength 3/16″ fiber-filled polymer — cannot be pried off with basic tools like a locking gas cap
Prevents siphoning, contamination, vandalism, and unauthorized fueling — all in one product
Purpose-built for motorhome chassis — exact-fit, not a universal product
Bolt-on in 8-15 minutes — immediate protection from the moment you install it
Starting at $84.95 — less than the cost of a single tank of stolen diesel

See the Difference

$Exposed fuel cap \u2014 easy target for thieves$

✖ Exposed fuel cap \u2014 easy target for thieves

$RV Fuel Vault \u2014 locked, sealed, protected$

✓ RV Fuel Vault \u2014 locked, sealed, protected

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Stop Siphoning Cold

A tamper-resistant lock and full door coverage means thieves cannot access your fuel cap at all — they move on to an easier target.

Prevent Fuel Contamination

Sugar, water, and debris in your tank can destroy your engine. The RV Fuel Vault seals everything out.

Overnight Peace of Mind

Whether you are at a campground, truck stop, or boondocking — your fuel is locked and protected while you sleep.

Insurance That Pays for Itself

At $84.95, it costs less than one tank of stolen diesel. It pays for itself the first time a thief walks past your rig.

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

Compatible Chassis & Models

Manufacturer	Models / Floorplans
Ford E-350 / E-450	Class C — Coachmen, Thor, Winnebago, Jayco, East to West, Entegra, Forest River, Gulf Stream
Ford F-550 / F-600	Super C — Thor, Dynamax, Entegra Accolade/Accolade XL, Jayco, Renegade
Ford F53	Class A — Coachmen, Thor, Winnebago, Tiffin, Fleetwood, Newmar, Holiday Rambler
Workhorse W22/W24	Class A — Coachmen Mirada, Thor Windsport/Hurricane
Ram 5500	Super C — 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 $84.95

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 19/632,042 · Est. delivery by July 4, 2026