Why should The RV Fuel Vault be on every top RV accessories list?

Because it solves a universal problem that no other RV accessory addresses: every motorhome has a completely exposed, unlocked fuel cap. The RV Fuel Vault provides fuel security, contamination prevention, and a factory-finished look in one bolt-on product.

What makes this different from other RV exterior accessories?

Most exterior accessories are decorative. The RV Fuel Vault is functional — it locks, it protects, and it transforms the ugliest spot on your motorhome into the cleanest. No other accessory does all three.

Is this a must-have for new motorhome owners?

Yes. Whether your motorhome is brand new or 10 years old, it left the factory without a fuel door. The RV Fuel Vault is the upgrade it should have had on day one. Install it before your first trip.

Will it fit my specific motorhome?

The RV Fuel Vault is exact-fit for Ford E-350, E-450, F-550, F-600, F53, Workhorse W22/W24, and Ram 5500 chassis. Use our Fitment Finder to confirm your exact year, make, model, and floorplan.

How easy is the installation?

Bolt-on in 8-15 minutes with basic hand tools. No drilling, no cutting, no body modifications. The easiest upgrade you will make to your motorhome — and the most impactful.

What does it cost compared to other RV accessories?

Starting at $84.95 — less than a single tank of diesel. Free shipping, Limited Lifetime Warranty, and 30-day satisfaction guarantee. It pays for itself the first time it prevents a theft.

The Part the Factory Forgot

The Top RV Accessory That Every Motorhome Owner Overlooks

You have the surge protector, the tire pressure monitor, the leveling blocks. But look at the driver side of your motorhome — that exposed, unlocked fuel cap? That is the one thing every top-RV-accessories list forgot to mention. The RV Fuel Vault fixes it in 15 minutes.

The RV Fuel Vault — Locking Fuel Cap Cover — locking fuel door for motorhomes

The Problem

✖Every motorhome rolls off the line with a completely exposed, unlocked fuel cap — no door, no cover, no protection
✖Diesel fuel costs $4-5 per gallon — a full tank is $200-400 that anyone can access with a siphon hose
✖The ugly green diesel cap or blue DEF cap ruins the clean lines of your motorhome exterior
✖Road debris, water, and contaminants collect around the exposed filler neck between fill-ups
✖Most RV accessory lists focus on interior comfort — nobody addresses the glaring security gap on the outside of your rig
✖Locking gas caps and chrome fuel doors were not designed for motorhome filler neck geometry

The RV Fuel Vault Solution

The RV Fuel Vault is a locking fuel door purpose-built for motorhomes — the first and only one of its kind
Factory-finished look that transforms the driver side of your rig from exposed cap to clean, intentional design
Tamper-resistant keyed lock — real security against fuel theft, siphoning, contamination, and vandalism
High-strength 3/16 inch fiber-filled polymer — UV-resistant, corrosion-proof, all-weather durable
Exact-fit for your specific chassis — not universal, not one-size-fits-none
Bolt-on in 8-15 minutes with basic hand tools — the easiest upgrade you will ever make
From $84.95 — protects hundreds of dollars of fuel on every trip

See the Difference

✖ Before — exposed fuel cap, zero protection

✓ After — RV Fuel Vault installed, the top RV upgrade

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Exterior Upgrade

The fastest, most visible exterior upgrade for your motorhome. No paint, no bodywork — just bolt on and go.

Fuel Theft Deterrent

A locked fuel door is a visible deterrent. Thieves move on to easier targets — the ones without a Fuel Vault.

Engine Protection

Keeps water, debris, and contaminants out of your filler neck. Clean fuel, clean engine, fewer problems.

Complete Coverage

Covers the fuel cap, filler neck, and surrounding area. DEF cover also available in matching style.

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

Pre-Order Today — Starting at $84.95

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

Pre-Order My RV Fuel Vault

Proudly Made in the USA · Patent Pending 19/632,042 · No charge until we begin production