+6 -
40ft long
-
Sleeps 7
-
3 slides
-
Cummins ISB-XT 6.7L
-
360 HP
3901 Floorplan
Specifications
| Sleeps | 7 | Slides | 3 |
| Length | 39 ft 11 in | Ext Width | 8 ft 5 in |
| Ext Height | 12 ft 6 in | Int Height | 7 ft |
| Interior Color | Mondovi III, Cambria III, Naples | Exterior Color | Full Body Paint; Cobalt, Acadia, Luna, Santorini |
| Hitch Weight | 10000 lbs | GVWR | 35320 lbs |
| Fresh Water Capacity | 91 gals | Grey Water Capacity | 51 gals |
| Black Water Capacity | 51 gals | Tire Size | 275/80R 22.5 |
| Furnace BTU | 40000 btu | Generator | Onan RV QD 8000 Diesel |
| Fuel Type | Diesel | Engine | Cummins ISB-XT 6.7L |
| Chassis | Freightliner XC-R | Horsepower | 360 hp |
| Fuel Capacity | 100 gals | Wheelbase | 270 in |
| Number Of Bunks | 1 | Available Beds | King Tilt-A-View |
| Torque | 800 ft-lb | Refrigerator Type | Double Door Residential w/In Door Water and Ice |
| Refrigerator Size | 21.4 cu ft | Convection Cooking | Yes |
| Cooktop Burners | 2 | Shower Size | 52" x 30" |
| Number of Awnings | 1 | LP Tank Capacity | 105 lbs |
| Water Heater Type | Tankless | AC BTU | 30000 btu |
| Basement Storage | 215 cu. ft. | TV Info | LR 43" LED Smart HDTV and 55" LED Smart HDTV, BR 32" LED Smart TV, Ext. 40" LED TV |
| Awning Info | 20' Power Lateral Arm with LED Lighting | Washer/Dryer Available | Yes |
| Gross Combined Weight | 45320 lbs | Shower Type | Standard |
| Electrical Service | 50 amp |
Description
Thor Motor Coach Aria Class A diesel motorhome 3901 highlights:
- Full and Half Bath
- Ten Seatbelts
- 68" Sofa Bed
- Drop-Down Cab Bunk
- Stackable Washer/Dryer
- Exterior LED TV
2026 Thor Motor Coach Aria 3901 | Order Now!
Step into the 2026 Thor Motor Coach Aria 3901 and experience a diesel Class A motorhome designed for travelers who want space, sophistication, and effortless comfort. With three expansive slide outs, this coach opens into a residential-style retreat featuring captain’s chairs that swivel, a mid-coach half bath, and a rear full bath with dual sinks—perfect for long trips, guests, and everyday convenience.
Entertaining is easy and enjoyable thanks to generous seating and multiple seatbelts that let you bring everyone along. Relax in the Dream Dinette, stretch out on the tri-fold sofa, or unwind in the reclining theater seats. The living area invites cozy evenings with a fireplace and two LED TVs, creating the perfect atmosphere for movie nights or relaxing downtime.
Cooking becomes a pleasure with the well-equipped kitchen featuring a convection microwave oven, electric induction cooktop, and a 21.4 cu. ft. double-door residential refrigerator. A dedicated pantry ensures you have room for every ingredient. When the day winds down, retreat to the walk-through bedroom where the Tilt-A-View inclining king bed delivers customized comfort before you enter the spa-like full bathroom.
Behind the wheel, the Aria 3901 offers a driving experience as refined as its interior. Its VFS front axle with a 55-degree wheel cut, Air-Ride suspension, and Sachs shock absorbers create a smooth, confident ride. The driver enjoys a 10.1" touchscreen dash radio with Bluetooth and Sirius/XM prep, along with leatherette reclining/swivel captain’s chairs for premium comfort mile after mile.
Throughout the coach, high-end craftsmanship shines with Wyndham cabinetry, solid-surface countertops, designer tile backsplash, and a large double-bowl stainless steel sink with pull-down sprayer. From the oversized full-height shower to the thoughtfully designed storage solutions, the Aria 3901 elevates every aspect of RV living.
Available to Order from Campers Inn RV of Naperville
This Available to Order unit lets you secure the exact model, floorplan, and features you want, backed by Campers Inn RV of Naperville’s expert guidance and seamless order process—ensuring your custom-built motorhome arrives exactly the way you envision it.
Call and connect with you RV Matchmaker today! (815) 726-1900
Why Buy From Campers Inn RV?
At Campers Inn RV, we’re more than just a dealership—we’re your camping partner for life. With over 50 years of trusted service, we offer:
- Nationwide support through one of the largest RV dealer networks
- Experienced, knowledgeable staff focused on customer satisfaction
- Transparent pricing with no hidden surprises
- Trusted service departments offering long-term RV support
- Extensive inventory selection to help you find the perfect model
- Family-owned dealership devoted to honesty, care, and long-term relationships
Features
Standard Features (2026)
Construction & Exterior
- Freightliner® XC-R Raised Rail Chassis with Atlas™ Foundation
- Cummins® ISB-XT 6.7L Engine with 360HP and 800 lb.-ft. Torque
- STEALTH Black-Out Package
- CHROME Package (optional)
- 160-amp, 12-volt Alternator
- In-Block, 750 Watt Engine Heater
- 6 Speed Allison MH-3000 Automatic Transmission
- 100-gallon Fuel Tank with Dual Fills
- Air-Ride™ Suspension
- VFS Front Axle with 55° Wheel Cut
- Full Air Front & Rear Drum Anti-Lock Brakes
- Exhaust Brake
- Sachs® Shock Absorbers
- One-Piece Fiberglass Front & Rear Caps
- One-Piece Windshield
- Premium One-Piece Domed Roof Membrane
- Full-Body Paint Packages with Gel-Coat Sidewalls
- Invisible Front Paint Protection
- Automatic Leveling Jacks with Touchpad Controls
- Side-Hinged Locking Compartment Doors with Gas Pistons
- Basement Pass-Through Storage
- Easy Slide Storage Tray
- Power Entry Door & Patio Lateral Arm
- Awnings with Integrated LED Lighting
- Slideout Room Topper Awnings
- Patio Light (Both Sides)
- Roof Ladder
- Frameless Dual Pane Windows
- 10,000-lb. Trailer Hitch with 7-pin Round Connector
Automotive & Cockpit
- 14” Touchscreen Dash Radio with Bluetooth®, Apple CarPlay®/Android Auto® & Sirius/XM® Radio Prep
- Heated/Power Mirrors with Integrated Side View Cameras
- Blind Spot Detection
- Leatherette Reclining/Swivel, Power Adjustable Captain’s Chairs with Lumbar Support (Passenger Seat has Electric Footrest)
- Keyless Entry System
- Tilt/Telescoping Steering Column
- Cruise Control
- Air Horns
- Fog Lights
- Emergency Engine Start & Generator Start Switch on Dash
- Map Lights & Dash Fans
- Driver & Passenger Overhead Storage Cabinetry
- Wireless Phone Charger with USB Ports Located Next to Passenger Seat
- Power Solar & Privacy Shades on Windshield
- Manual Solar & Privacy Shades on Side Windows
- Electric Step Cover
- Double-Electric Entry Step
- Thor Insignia Puddle Light at Entry Door
- 295/75R 22.5” Radial Tires
- Black Chrome “Thor Motor Coach” Mud Flap
- Stealth Package: Includes Black Aluminum
- Wheels, Headlight Bezels, Logos & TMC Emblem
- Power Drop-Down Hide-Away Overhead Bunk with Cotton Cloud™ Mattress
- Chrome Package: Includes Polished Aluminum Wheels, Chrome Headlight Bezels, Logos & TMC Emblem (Optional)
Interior
- Porcelain Tile Flooring
- Central Vacuum System
- Ceiling Ducted Whisper Air™ Central Cooling System
- Soft Vinyl Ceiling
- LED Lighting
- Chalet Collection Two-Tone Cabinetry with Satin Nickel Hardware
- Full Extension Metal Ball Bearing, Soft Closing Drawer Guides
- Window Privacy Roller Shades
- D/S Leatherette Sofa Bed (3901 & 4000 )
- Leatherette Power Reclining Theater Seating with Footrests, Heat, Massage, USB Charging Ports & Cup Holders - On Inverted Power Circuit (3702 & 3901)
- Leatherette Dream Dinette® Booth with Wireless Charger on Table Top & Dual Child Safety Tethers
- Electric Fireplace with Remote Control (3702 & 3901)
- Asheville Collection Two-Tone Cabinetry with Chrome Finish Hardware (Optional)
- D/S Leatherette Sofa Bed (3702)(Optional)
- P/S Leatherette Sofa Bed (3901 (Optional)
- Kitchen
- Residential Refrigerator with In-Door Water & Ice Dispenser
- Two Burner Electric Induction Cooktop
- Designer Tile Backsplash
- Stainless Steel Over-the-Range Convection Microwave Oven with Air Fryer
- Solid Surface Countertops
- Pop-Up Wireless Phone Charger with Outlets & USB Charge Ports in Kitchen Countertop
- Large Double Bowl Stainless Steel Sink with Single Handle Faucet & Pull-Down Sprayer
- Solid Surface Sink Covers
- 12-volt Attic Fan with Cover
Bedroom & Bathroom
- King Size Bed with Tilt-A-View® Inclining Bed Mechanism
- Bedspread with Throw Pillows
- Wireless & USB Charging Ports
- Bunk Beds - Converts to Closet (4000)
- Electric Fireplace with Remote Control (3702)
- 110-Volt Outlet on Inverted Circuit for CPAP Machine
- Foot Flush Porcelain Toilet
- Macerator Toilet (3901 & 4000)
- Oversized Full Height Fiberglass Shower with Glass Door
- Oxygenics® Shower Head
- Skylight in Shower
- Second Full Height Fiberglass Shower and Tub with Glass Door (4000)
- 12-volt Attic Fan w/Cover in Bathroom
Entertainment
- 55” & 42” LED Smart TV in Living Area (3901)
- 50” LED Smart TV in Living Area (3702 & 4000)
- 32” LED Smart TV in Cockpit Overhead (3702 & 4000)
- 32” LED Smart TV in Bedroom
- Sound Bar with Bluetooth®
- Exterior 40” TV on Swivel Bracket with Sound Bar with Bluetooth®
- TV Prep & USB Charge Port in Bunk Beds (4000)
- Cable TV & HDMI Video Distribution
- Satellite Mounting Backer in Roof
- Winegard® ConnecT™ 5G / WiFi Extender / TV Antenna
Electrical & Plumbing
- Onan® RV QD 8000 Diesel Generator
- Automatic Generator Start
- Automatic Transfer Switch with Power Protection
- 50-amp Shoreline Power Cord
- 12-volt Electric Power Cord Reel
- Aqua-Hot® 250D Hydronic Furnace & Water Heating System
- 2000-watt Pure Sine Inverter/100-amp Converter
- Triple Roof Air Conditioners with Heat Pump in Front Living Area
- Energy Management System
- Four (4) Auxiliary House Batteries
- Battery Disconnect Switch
- Rapid Camp+® Multiplex Wiring Control System with 7” Screen, WiFi-App-Enabled & SurgeGuard® Electrical Protection
- 100-watt Solar Charging System controlled via Multiplex Panel
- Exterior GFCI Recept
- Enclosed & Heated Holding Tanks
- E-Z Flow Water Panel with Whole-House Water Filtration
- Black Tank Flush System
- 360° Siphon® Holding Tank Vent Cap
- Outside Shower
- Stackable Washer & Dryer
- 400-watt Additional Solar Charging System (Option)
See us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
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*All calculated monthly payments are an estimate for qualified buyers only and do not constitute a commitment that financing or a specific interest rate or term is available. Financing terms may not be available in all Campers Inn locations. Campers Inn RV Sales is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual inventory in stock on our lot. Please contact us for availability as our inventory changes rapidly.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.