Why is The RV Fuel Vault considered a must-have RV gadget?

Because it solves a problem every motorhome owner has but most do not realize: your fuel cap is completely exposed. No other RV gadget or accessory addresses fuel security, contamination prevention, and curb appeal in one bolt-on product.

How does it compare to other popular RV gadgets?

Tire pressure monitors protect your tires. Surge protectors protect your electrical. The RV Fuel Vault protects your fuel system — which holds $200-400 worth of diesel. It is the one security gadget most RV owners do not know they need until they see it.

Is this just a locking gas cap?

No. Locking gas caps only cover the cap itself and most do not fit diesel filler necks. The RV Fuel Vault is a complete locking fuel door that covers the entire filler neck area, cap, and surrounding body panel — with a tamper-resistant keyed lock.

Will it fit my 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 — covering Class C, Super C, and Class A motorhomes from Coachmen, Thor, Winnebago, Jayco, Entegra, Dynamax, Fleetwood, Tiffin, and more. Use our Fitment Finder for your exact year, make, model, and floorplan.

How hard is it to install?

Bolt-on installation in 8-15 minutes with basic hand tools. No drilling, no cutting, no body modifications. If you can use a wrench, you can install The RV Fuel Vault. Completely reversible.

High-strength 3/16 inch fiber-filled polymer — an engineered composite reinforced with glass fibers. UV-resistant, corrosion-proof, and virtually unbreakable. Not steel, not chrome, not lightweight plastic.

How much does it cost?

Starting at $139.95 for a single door. Available in single, 2-pack, and 3-pack configurations. Free shipping. Limited Lifetime Warranty. 30-day satisfaction guarantee. Less than a single tank of diesel.

The Part the Factory Forgot

The Best RV Gadget Nobody Is Talking About — Yet

Every best-RV-gadgets list covers the same stuff: tire pressure monitors, surge protectors, backup cameras. Those are great. But none of them solve the problem hiding in plain sight on every Super C, Class C, and Class A motorhome — your completely exposed, unlocked fuel cap. The RV Fuel Vault is the gadget that changes that.

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 a completely exposed, unlocked fuel cap — no door, no cover, no lock
✖Diesel fuel theft at RV parks and campgrounds is rising — siphoning takes minutes and costs hundreds
✖The exposed cap area collects road grime, bugs, and moisture — contamination risk every time you fuel up
✖An ugly green diesel cap or blue DEF cap is the first thing people see on the driver side of your rig
✖Most RV gadget lists focus on convenience and comfort — nobody is talking about the security gap on your fuel system
✖Generic locking gas caps do not fit diesel filler necks reliably and still leave everything exposed

Why a Locking Fuel Door Beats a Locking Gas Cap

The RV Fuel Vault is a locking fuel door that bolts directly over your exposed fuel cap — IS the door your motorhome never had
Tamper-resistant keyed lock stops fuel theft, siphoning, contamination, and vandalism
Factory-finished look — instantly upgrades the driver side of your rig from ugly exposed cap to clean, intentional design
High-strength 3/16 inch fiber-filled polymer — UV-resistant, corrosion-proof, virtually unbreakable
Exact-fit for Ford E-350, E-450, F-550, F-600, F53, Workhorse W22/W24, and Ram 5500 chassis
Bolt-on in 8-15 minutes — no drilling, no cutting, no body modifications, completely reversible
Starting at $139.95 — less than a tank of diesel and protects every fill-up after

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

✖ Every RV gadgets list misses this — exposed fuel cap

✓ RV Fuel Vault installed — the gadget that completes your rig

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Instant Curb Appeal

The exposed fuel cap is the ugliest thing on your motorhome. The RV Fuel Vault replaces it with a clean, factory-finished look.

Real Fuel Security

Tamper-resistant keyed lock. Not a gas cap, not a latch — a real locking door that covers everything.

Contamination Shield

Road grime, water, bugs, and vandals cannot reach your filler neck. Every fill-up is cleaner and safer.

Peace of Mind

Whether you are parked at an RV park, truck stop, or boondocking — your fuel system is locked and protected.

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?

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 $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