Which RV Fuel Vault fits a Ford E-450 or E-350 Class C?

The large door, RVFV-1002L, with the SS100 security screw pack. It is $169.95. Confirm your exact coach in Find My Fit.

Will it fix a “Check Fuel Inlet” warning?

It can help when dust on the exposed cap seal is the cause. Check for a loose or damaged cap or an EVAP fault first.

Does it fit E-350 and E-450 Class C coaches from the 1990s and 2000s?

The factory fill area has been largely unchanged for decades, and our fitment records go back to the 1990s. Confirm your year in Find My Fit.

How long is the install?

8–15 minutes with hand tools or an impact driver. No drilling.

What about Class A gas coaches?

Class A gas motorhomes on the Ford F53/Workhorse chassis are covered too — see the F53 / Workhorse fuel door replacement page.

Class C Ford E-Series

Ford E-350 / E-450 Class C Fuel Door Replacement

Class C motorhomes on the Ford E-350 and E-450 chassis use one exposed gas fill. The large RV Fuel Vault door (RVFV-1002L) with SS100 security screws bolts over the factory fill pocket in 8–15 minutes and locks.

Order Now — From $159.95

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The RV Fuel Vault — Locking Fuel-Door Enclosure — locking fuel door for motorhomes

Why a Locking Gas Cap Is Not Enough

✖Most E-350/E-450 Class C coaches leave the factory with an exposed gas cap and no locking door
✖Where a factory door exists, the thin plastic cracks and the latch wears out
✖Dust on the exposed cap seal is a common cause of the Ford “Check Fuel Inlet” warning
✖Locking gas caps can be picked — one of our customers lost fuel inside a locked storage lot

Why a Locking Fuel Door Beats a Locking Gas Cap

Large door RVFV-1002L with SS100 security screws — the standard E-350/E-450 fit
Uses the factory screw holes — no drilling or cutting
Keyed lock; factory cap stays in place, so the EVAP seal is untouched
Fits Coachmen, Thor, Winnebago, Jayco, Forest River, Nexus, Gulf Stream, Phoenix USA, East to West and more
Limited Lifetime Warranty and $500 No-Siphon Promise
Made in the USA

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

✖ Factory E-Series fill

✓ RV Fuel Vault installed

How It Installs — 8–15 Minutes, No Drilling, No Cutting

Confirm the coach in Find My Fit

Remove the factory bezel screws around the fill pocket (leave the cap in place)

Align the large RV Fuel Vault door with the factory screw holes

Secure with the SS100 security screws — do not over-tighten

Test the lock with both keys

Frequently Asked Questions

Common questions about The RV Fuel Vault on Ford E-350 / E-450 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