Do Anti-Theft Fuel Caps Actually Work on Motorhomes?

## Do Anti-Theft Fuel Caps Actually Work on Motorhomes? **Anti-theft fuel caps provide minimal protection on motorhomes.** They're designed for passenger cars with standard filler necks — not for the commercial chassis filler necks on Ford E-450, F-550, F53, Ram 5500, and Workhorse platforms. ### Where Anti-Theft Fuel Caps Fall Short **Fit problems:** Commercial chassis filler necks have different dimensions. A cap designed for a Ford F-150 won't properly seal or lock on a Ford F-550 or E-450. **Security problems:** The lock on a $15–$25 cap can be twisted off with channel-lock pliers, drilled out in 20 seconds, or pried off with a screwdriver. **Coverage problems:** An anti-theft cap only protects the cap opening. The filler neck area remains exposed. ### The Honest Answer Anti-theft fuel caps are better than a standard cap with no lock. But they are not real security — especially on a motorhome where the stakes are high. ### What Actually Works: A Full Locking Enclosure **[The RV Fuel Vault](/#pre-order)** goes beyond the cap: - **Tamper-resistant keyed lock** — not a simple tumbler - **3/16" fiber-filled polymer body** — resists prying, drilling, and impact - **Full filler neck coverage** — no gap for hoses, contaminants, or tools - **Precision fit** for your specific chassis - **Factory-finished appearance** Starting at $99.95. A fraction of one fuel theft incident. *Patent Pending · Made in USA · Limited Lifetime Warranty*