I already have TPMS — why do I need The RV Fuel Vault?

TPMS monitors your tire pressure to prevent blowouts. The RV Fuel Vault protects your fuel system from theft, contamination, and vandalism. They solve completely different problems — and both are essential for a well-protected motorhome. If you’re the kind of owner who invests in TPMS, this is a no-brainer addition.

Is it as important as TPMS?

Different kind of important. A TPMS prevents tire failures that could be dangerous. The RV Fuel Vault prevents fuel theft (losing $200-500 of diesel) and contamination (which can cause $5,000+ in engine damage). Both protect your investment and your safety.

How does installation compare?

Much simpler than TPMS. No sensors to attach, no monitor to mount, no pairing to configure. The RV Fuel Vault is a pure bolt-on — 8-15 minutes with basic hand tools. No drilling, no cutting.

Will it fit my motorhome?

Fits Ford E-350, E-450, F-550, F-600, F53, Workhorse W22/W24, and Ram 5500 chassis — virtually every Super C, Class C, and Class A motorhome. Use our Fitment Finder for your exact year, make, model, and floorplan.

How much does it cost?

Starting at $84.95. Free shipping. Limited Lifetime Warranty. 30-day satisfaction guarantee. Less than a single TPMS sensor replacement — and it protects your fuel on every trip.

The Part the Factory Forgot

You Monitor Your Tires with TPMS \u2014 But Your Fuel Cap Has Zero Protection

A tire pressure monitoring system is one of the smartest safety investments for your motorhome \u2014 real-time alerts before a blowout ruins your trip. But while you\u2019re monitoring what\u2019s underneath your rig, there\u2019s a glaring gap on the outside: your fuel cap is completely exposed. No door, no lock, no protection. The RV Fuel Vault fixes that in 15 minutes.

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

The Problem

✖You invested in TPMS to prevent blowouts — smart move. But your fuel system has zero protection.
✖Every motorhome leaves the factory with a completely exposed, unlocked fuel cap — no door, no cover
✖TPMS protects your tires from catastrophic failure — but nothing protects your fuel from theft or contamination
✖Diesel costs $4-5/gallon — your 50-100 gallon tank is an easy target for thieves
✖Contaminated fuel can cause engine damage far more expensive than a tire replacement
✖You’re proactive about safety — your fuel system deserves the same attention as your tires

The RV Fuel Vault Solution

The RV Fuel Vault locks and covers your exposed fuel cap — the perfect safety companion to your TPMS
Tamper-resistant keyed lock stops fuel theft, siphoning, contamination, and vandalism
Protects your engine from contaminated fuel — prevention is cheaper than repair
High-strength 3/16″ fiber-filled polymer — UV-resistant, corrosion-proof, all-weather durable
Exact-fit for your specific chassis — Ford E-350, E-450, F-550, F-600, F53, Workhorse, Ram 5500
Bolt-on in 8-15 minutes — even simpler than installing your TPMS sensors
Starting at $84.95 — less than a single TPMS sensor replacement, protects every fill-up

See the Difference

$TPMS on your tires \u2014 but your fuel cap is wide open$

✖ TPMS on your tires \u2014 but your fuel cap is wide open

$RV Fuel Vault installed \u2014 now your fuel is protected too$

✓ RV Fuel Vault installed \u2014 now your fuel is protected too

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Complete Your Safety Setup

TPMS prevents tire disasters. The RV Fuel Vault prevents fuel disasters. Now your rig is protected on all fronts.

Prevent Engine Damage

Contaminated fuel can destroy injectors and pumps — a $5,000+ repair. The RV Fuel Vault seals out water, dirt, and tampering.

Factory-Finished Look

Transforms the driver side from ugly exposed cap to clean, intentional design — matching the care you put into the rest of your rig.

Simpler Than TPMS

No sensors, no wireless, no batteries. Just bolt it on in 15 minutes with basic hand tools.

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

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Proudly Made in the USA · Patent Pending 19/632,042 · Est. delivery by July 4, 2026