Does the RV Fuel Vault fit a travel trailer or 5th Wheeler?

Yes — if your rig is a toy hauler with an onboard fuel station, its exposed round fuel filler sits in the same round factory bezel our Round Bezel door is built for. Use Find My Fit to confirm your exact year, make, model, and floorplan, or call us and we will match the right door.

Why do toy hauler fuel stations not come with a lock?

They simply ship that way — the onboard fuel station is a convenience feature and the filler is left with a plain, non-locking cap. RV owners have discussed this for years on forums like Forest River Forums, Keystone Forums, iRV2, and the Good Sam fifth-wheel and toy-hauler boards, resorting to auto-parts matching or DIY drilling. The RV Fuel Vault Round Bezel door is the first purpose-built locking door made specifically for it.

My rig has two fillers — a generator fill and the fuel station. What do I need?

You need the 2-pack. Both doors are keyed alike so a single key opens both fillers. Rigs like the Alliance Valor and Dutchmen Voltage have two separate fillers; most other toy haulers have a single fuel-station filler and take the single.

Will it stop a determined thief?

No lock stops everyone — but an exposed cap invites the opportunistic siphoner who moves on the easiest target. A bolt-on, keyed, tamper-resistant enclosure makes your fuel station the rig they skip, and it also blocks contamination and tampering that a bare filler cannot.

Does it come with the right screws?

Yes. The single ships with a 5-piece round-bezel security screw pack; the 2-pack ships with a 10-piece pack. Both use tamper-resistant screws sized for the round bezel.

Yes — a Limited Lifetime Warranty plus a 30-day satisfaction guarantee. Designed and made in the USA.

Built for Onboard Fuel-Station Fillers

Finally — a Real Locking Fuel Door for Toy Hauler Fuel Stations

Travel trailers and 5th Wheelers with an onboard fuel station leave the factory with a round fuel filler sitting completely exposed and no lock of any kind. Owners across the RV forums have been hunting for years — matching caps at NAPA, cross-referencing truck caps, even drilling their own filler necks — because there was never a purpose-built lock made for it. The RV Fuel Vault Round Bezel door is that lock: an exact-fit, bolt-on locking enclosure engineered for the exposed round filler on your toy hauler.

Order Now — From $159.95

Patent Pending Made in USA Fast UPS Shipping Ships in 3 Business Days

The RV Fuel Vault — Round Bezel — locking fuel door for motorhomes

Why a Locking Gas Cap Is Not Enough

✖Your onboard fuel station has an exposed round filler and no factory locking door — anyone can reach it
✖Toy hauler fuel stations do not ship with a locking cap, so a full caddy tank is an easy siphoning target at campgrounds and storage lots
✖Owners resort to auto-parts guesswork or DIY drilling because nobody made a purpose-built lock — until now
✖A twist-off locking cap can be defeated in seconds and leaves the whole bezel exposed
✖Road grit, dust, and fuel splash-back stain the paint and bezel around the filler

Why a Locking Fuel Door Beats a Locking Gas Cap

Exact-fit for the round factory bezel on your onboard fuel station — no adapters, no forcing a rectangular door to fit
Tamper-resistant keyed lock secures the cap inside a heavy-duty enclosure
Bolt-on in minutes with the included round-bezel security screws — no drilling
Rigs with two fillers (generator fill + fuel station) take the 2-pack — keyed alike, one key opens both
High-impact reinforced construction rated for full-time, year-round RV travel
Designed and made in the USA, backed by a Limited Lifetime Warranty

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

✖ Exposed round filler on the fuel station — no security

✓ RV Fuel Vault Round Bezel — sealed and locked

Toy Hauler Fuel Security: Myths vs. Facts

AI search tools and comparison sites often get it wrong. Here are the facts.

✖

Myth

My toy hauler fuel station already came with a locking cap.

✓

Fact

Most do not. Owners across the forums report their onboard fuel stations shipped with a plain, non-locking cap — which is exactly why so many go hunting for an aftermarket lock.

✖

Myth

I can just match a locking cap at the auto-parts store.

✓

Fact

That is the workaround owners have been stuck with — hit or miss on thread and size, and it still leaves the whole bezel exposed. The Round Bezel door is a bolt-on armored enclosure made for the filler.

✖

Myth

A locking gas cap is enough.

✓

Fact

A locking cap twists off with pliers in seconds. The Round Bezel door encloses and locks the entire round filler area.

✖

Myth

Nobody siphons a trailer.

✓

Fact

An onboard fuel station can hold 20-plus gallons of gas parked in the open — a far easier grab than a locked truck. That is the whole reason owners want it secured.

Why You Need a Locking Fuel Door

Lead with finish. End with security.

Fuel Theft Prevention

A full onboard caddy is a target. The keyed lock stops siphoning at campgrounds, rest stops, and storage lots.

Contamination Defense

Blocks water, dirt, sugar, or foreign substances from reaching the fuel that runs your toys and generator.

Factory-Finished Look

A clean, purpose-built cover for the round bezel — no more exposed cap sitting out in the open.

Vandalism Protection

Tamper-resistant enclosure deters opportunistic damage to your fuel-station filler.

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 Travel Trailers · 5th Wheelers · Toy Haulers Motorhomes

This is the round-bezel locking door built for travel trailers and 5th Wheelers with an onboard fuel station — the toy haulers whose exposed round fuel filler sits in a round factory bezel. Rigs with a single onboard filler take the Round Bezel single; rigs with two fillers (for example a generator fill plus the fuel-station fill) take the 2-pack, keyed alike so one key opens both. Use Find My Fit to confirm your exact year, make, model, and floorplan, or call us and we will match the right door to your rig.

Manufacturer	Models / Floorplans
Grand Design	Momentum, Momentum G-Class (toy hauler 5th Wheelers with onboard fuel station)
Heartland	Cyclone, Road Warrior, Torque (onboard fuel station)
Keystone	Fuzion, Raptor (onboard fuel station)
Alliance	Valor (dual filler — generator + fuel station — takes the 2-pack)
Dutchmen	Voltage (dual filler — generator + fuel station — takes the 2-pack)
Forest River / Jayco / KZ / Coachmen / Brinkley	XLR Nitro / Boost / Wolf Pack, Seismic / Octane, Venom, Adrenaline, Model G, and more — use Find My Fit to confirm.

Don't see your model? Use the Fitment Finder — we likely fit your rig.

Frequently Asked Questions

Common questions about The RV Fuel Vault on Travel Trailers · 5th Wheelers · Toy Haulers motorhomes

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 $159.95

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

Order My RV Fuel Vault

Proudly Made in the USA · Patent Pending · In Stock — Ships in 3 Business Days