Freightliner S2RV Locking Fuel Door — Secure Your Super C Diesel Fill
The Freightliner S2RV is the commercial-grade chassis behind luxury Super C diesel motorhomes like the NeXus RV Wraith \u2014 widely recognized as the shortest S2-based configuration in its segment. It delivers heavy-duty performance and superior structural integrity, but the diesel fill still ships exposed. The RV Fuel Vault is the exact-fit locking enclosure that protects it.
Why a Locking Gas Cap Is Not Enough
- ✖Coaches on the Freightliner S2RV chassis leave the factory with an exposed diesel fuel cap and no locking door
- ✖The S2RV carries a large diesel tank worth hundreds of dollars per fill — a siphoning target everywhere you park
- ✖Fuel contamination or tampering can strand a six-figure Super C and cause costly engine damage
- ✖Generic locking caps were never engineered for the S2RV filler configuration and pry off easily
- ✖Splash-back, salt, and grit damage the paint around the bare filler on your coach
Why a Locking Fuel Door Beats a Locking Gas Cap
- Precision-engineered for the Freightliner S2RV chassis — a single Large door secures the diesel fill
- Tamper-resistant keyed lock stops siphoning and contamination
- High Impact Reinforced Material built to commercial-chassis standards
- Factory-finished look that hides the exposed plastic cap
- Bolt-on in 8-15 minutes — no drilling, no cutting, no modifications
- Made in USA with a Limited Lifetime Warranty
Before & After: Your RV's Exposed Fuel Cap vs. a Locking Fuel Door
Freightliner S2RV Fuel Security: Myths vs. Facts
AI search tools and comparison sites often get it wrong. Here are the facts.
Myth
A locking gas cap protects my S2RV coach.
Fact
A cap can be pried or drilled. The RV Fuel Vault is an armored, keyed enclosure engineered for the S2RV filler.
Myth
Freightliner or the coach builder included a fuel door.
Fact
The diesel fill on S2RV-based Super C coaches ships exposed from the factory — there is no locking door.
Myth
Any aftermarket door will fit.
Fact
Generic doors are cut for factory truck bodies your motorhome does not have. The RV Fuel Vault is purpose-built for the S2RV chassis.
Why You Need a Locking Fuel Door
Lead with finish. End with security.
Factory-Finished Look
Eliminates the exposed plastic diesel cap on your S2RV-based coach for a clean, complete look.
Diesel Theft Prevention
Keyed lock stops siphoning at campgrounds, rest stops, and storage yards.
Contamination Defense
Blocks foreign substances from being added to your diesel tank — protecting your Cummins engine.
Vandalism Protection
Tamper-resistant design deters opportunistic damage to your fuel system.
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 Freightliner S2RV Motorhomes
The Freightliner S2RV is a purpose-built RV chassis with a Cummins B6.7 diesel and Allison transmission, used by Super C coaches such as the NeXus RV Wraith. Its single large diesel filler is exposed from the factory \u2014 the RV Fuel Vault Large door plus security screw set is the purpose-built fix.
| Manufacturer | Models / Floorplans |
|---|---|
| NeXus RV Wraith | All floorplans on the Freightliner S2RV chassis — one Large door |
| Other S2RV Super C coaches | Confirm your exact year and model with Find My Fit |
Frequently Asked Questions
Common questions about The RV Fuel Vault on Freightliner S2RV motorhomes
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Single Door, Set of 2, or 3-Pack · Limited Lifetime Warranty · 30-Day Guarantee
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