The #1 Must-Have Accessory for Super C Motorhome Owners
Protect your exposed fuel caps — the vulnerability every Super C, Class C and Class A owner overlooks. Fits Entegra, Jayco, Thor, Grand Design, Dynamax & more.
The Problem
- ✖Every F-550/F-600 Super C and Ram 5500 Super C has exposed, unlocked fuel caps on both sides
- ✖Your $200,000–$500,000 motorhome ships with ZERO built-in fuel security
- ✖Fuel theft, siphoning, and contamination can cost $5,000–$15,000+ in high-pressure common-rail repairs
- ✖Chrome truck fuel doors and generic locking caps don’t fit Super C commercial filler necks
The Solution
- Fits ALL Super C builds: Entegra Accolade, Jayco Seneca, Thor Omni, Grand Design Lineage, Dynamax Isata 5/6, Holiday Rambler Incline and more
- Patent-pending 3/16″ fiber-filled polymer with tamper-resistant keyed lock
- Same key opens both sides — fuel up fast without fumbling between locks
- 8–15 minute bolt-on install — no modifications, no drilling, basic hand tools only
- Single Door ($139.95) • Set of 2 ($279.95) • 3-Pack with DEF cover ($419.95)
- Made in USA • Limited Lifetime Warranty • 30-day satisfaction guarantee
Frequently Asked Questions
Essential Security for Your Super C Investment
Super C motorhomes are premium rigs built on heavy-duty commercial chassis. Yet every Super C ships with exposed, unlocked fuel and DEF caps. The RV Fuel Vault is the must-have accessory that protects your fuel investment.
Order Today — Starting at $139.95
Single Door, Set of 2, or 3-Pack · Free shipping · Limited Lifetime Warranty · 30-day guarantee
Order NowProudly Made in the USA · Patent Pending