1990–2027 Thor Motor Coach Chateau Locking Fuel Door
The RV Fuel Vault is confirmed to fit the Thor Motor Coach Chateau on the Chevrolet 4500, Ford E-350, Ford E-450 chassis. Here are the covered floor plans and the exact parts for your rig.
Covered floor plans
Thor lists 2025 Chateau 22B, 22E, 21Z and ESpec Essential 22Z on the Chevrolet chassis (Single Round Door).
Parts that fit
RV Fuel Vault — Large Standard Single
VerifiedRVFV-1002L
Oversized single door for Class C (E-350/E-450), Class A (F-53/Workhorse), and motorhomes with larger fuel cap openings. Security screws included.
$169.95
ViewSecurity Screw Pack — Single Door (13 pc)
VerifiedRVFV-SS100
Tamper-resistant security screws with Safety Torx Driver Bit — 13 screws (12 + 1 extra). Each door requires 1 pack. We include 1 extra screw because things can happen during installation — like stripping or breaking a screw while mounting add-on components.
$19.95
ViewStandard Large Fuel Cap Housing Bezel, Factory Replacement
VerifiedRVFVB-9002L
Factory Replacement Fuel Cap Housing Bezel, Large. Fits large single fuel-fill housings on Class A gas coaches such as the Ford F53 chassis.
$89.95
ViewRV Fuel Vault + Bezel Bundle — Large Single
VerifiedRVFV-BDL-1002L
Complete protection bundle: RV Fuel Vault Large Standard Single door + matching Large Fuel Cap Housing Bezel. Save by bundling! Security screws included.
$259.90
ViewRV Fuel Vault — Round Door Single
VerifiedRVFV-1001R
Single locking fuel door for any rig with a round factory bezel and an exposed (green diesel) fuel cap — including Super C motorhomes on Chevrolet/GMC medium-duty chassis and travel trailers & fifth wheels with an onboard fuel station (toy haulers). Locks over the exposed cap to stop tampering and fuel theft. Round-bezel security screws included. Designed to Fit on GMC and Chevy Chassis.
$159.95
ViewSecurity Screw Pack — Round Bezel Single (5 pc)
VerifiedRVFV-SS105
Tamper-resistant security screws with Safety Torx Driver Bit — 5 screws for one round-bezel door (includes a spare). Each round-bezel door requires 1 pack.
$19.95
ViewLock Dirt & Dust Cap — Single Door (1 cap)
VerifiedRVFV-DC100
Optional upgrade — a snug cap that covers the RV Fuel Vault lock face to keep road dirt, dust and grime out of the lock barrel so your key always turns clean. 1 cap for a single door. Price is per cap, installed on your door before it ships.
$9.95