Prevent Sugar, Water & Sand in Your RV Gas Tank
A single handful of the wrong substance \u2014 sugar, water, sand, DEF, or windshield-washer fluid \u2014 can destroy your RV\u2019s engine overnight. The RV Fuel Vault is an armored, tamper-proof locking fuel door that physically seals the filler neck on Super C, Class C, and Class A motorhomes.
The Problem
- ✖Sugar in the tank dissolves slowly in hot fuel — by the time the engine fails, the damage is catastrophic ($5,000–$25,000)
- ✖Water-in-tank attacks modern diesel injection systems within hours — even a cup is enough to hydrolock pump seals
- ✖Sand or dirt poured through the open fuel neck destroys high-pressure injector tips and fuel-filter assemblies
- ✖Disgruntled ex-partners, vandals, or campground bullies only need 30 seconds alone with your RV to wreck it
- ✖Most comprehensive insurance policies exclude deliberate fuel tampering — the owner pays for the repair
- ✖An exposed OEM fuel cap can be hand-unscrewed by anyone — no tools required, no lock to bypass
The Solution
- Armored 3/16″ fiber-filled polymer physically covers the fuel neck — no one can pour anything into your tank
- Tamper-proof keyed lock with recessed cylinder — no exposed lock to pick or break
- Blocks sugar, water, sand, DEF, bleach, and any other contaminant at the source
- Doubles as anti-siphon protection — two security layers in one armored shield
- Factory-finished look replaces the ugly exposed cap on Super C, Class C, and Class A motorhomes
- Single Door $84.95 • Set of 2 $149.95 • 3-Pack $224.95. Limited Lifetime Warranty. Made in Sarasota, Florida.
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 NowProudly Made in the USA · Patent Pending 19/632,042