3901Luxury Travel
Length 39'11"Sleeps 6
The 2026 Thor Motor Coach Aria 3901 is a luxury Class A diesel motorhome built on a powerful diesel chassis, combining premium comfort, refined design, and robust performance.
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Thor Motor Coach Aria
Class A Motorhome
The Thor Motor Coach Aria is a Class A motorhome from Thor Motor Coach, with 1 floorplan in stock at Giant RV from 39'11", sleeping 6. Compare every floorplan side by side, check the specs, and shop live Aria inventory across our Southern California locations.
6Sleeps
39'11"Length
1Floorplans
3Slides
DieselFuel
360 HPPower
10,000 lb.Tow Rating
35,320 lb.GVWR
Why Buy the Thor Motor Coach Aria?
- 1 floorplan in stock from 39'11" — compare them side by side below
- Sleeps up to 6 in the 3901
- Up to 3 slide-outs for extra living space when parked
- Diesel — 360 HP powertrain across the lineup
- Tow up to 10,000 lb. so the car, boat or toys can come along
- Up to 91 gal. fresh water for time away from hookups
- Built for luxury travel travel
- Sold and serviced by Giant RV at four Southern California locations
Floorplans
View All InventoryTop Features
Standard on the Aria
12 standard features from the Thor Motor Coach Aria lineup.
- Freightliner® XC-R Raised Rail Chassis with Atlas™ Foundation
- Cummins® ISB-XT 6.7L Engine with 360HP & 800 lb.-ft. Torque
- 160-amp, 12-volt Alternator
- In-Block, 750 Watt Engine Heater
- 6 Speed Allison MH-3000 Automatic Transmission
- Full Air Front & Rear Drum Anti-Lock Brakes
- VFS Front Axle with 55° Wheel Cut
- Air-Ride™ Suspension
- Exhaust Brake
- Sachs® Shock Absorbers
- 295/75R 22.5” Radial Tires with Aluminum Wheels
- Under-Hood Light
At a Glance
| Model | 3901 |
|---|---|
| Length | 39'11" |
| Slides | 3 |
| Sleeps | 6 |
| GVWR | 35,320 lb. |
| Fresh Water | 91 gal. |
| Best For | Luxury Travel |
Dimensions & Capacities
| Specification | 3901 |
|---|---|
| Length | 39'11" |
| Height | 12'6" |
| Width | 8'5" |
| Interior Height | 7' |
| Awning | 20' |
| Fresh Water | 91 gal. |
| Gray Water | 51 gal. |
| Black Water | 51 gal. |
| Propane | 105 lb. |
| Refrigerator | Full-Size |
| A/C Units | 3 |
| Bathrooms | 2 |
Chassis & Towing
| Chassis | 3901 |
|---|---|
| Fuel Type | Diesel |
| Engine Cylinders | 6 |
| Horsepower | 360 HP |
| Torque | 800 lb-ft |
| Fuel Tank | 100 gal. |
| Wheelbase | 22'6" |
| GVWR | 35,320 lb. |
| GCWR | 45,320 lb. |
| Tow Rating | 10,000 lb. |
| Hitch Rating | 10,000 lb. |
Shop Thor Motor Coach Aria near you
1 unit in stock at one of our Southern California stores.
- Giant RV ColtonShop 1 unit in Colton
1300 E. Santo Antonio Drive, Colton, CA 92324 · (909) 303-1293
Why Buy From Giant RV?
Ready to Experience the Aria?
Shop our selection online or visit one of our 4 Southern California locations today!
People Also Ask
How many floorplans does the Thor Motor Coach Aria come in?
Giant RV currently stocks 1 new Thor Motor Coach Aria floorplan: 3901. Floorplan availability changes as units sell and arrive, so check live inventory or ask a Giant RV specialist about incoming models.
How long is the Thor Motor Coach Aria?
The Thor Motor Coach Aria 3901 measures 39'11" overall.
How many people does the Thor Motor Coach Aria sleep?
Thor Motor Coach Aria floorplans sleep 6, with the 3901 sleeping the most at 6.
How much can the Thor Motor Coach Aria tow?
The Thor Motor Coach Aria is rated to tow up to 10,000 lb. (3901). Always confirm the rating for the exact floorplan and chassis before hitching up.
Is the Thor Motor Coach Aria gas or diesel?
The Thor Motor Coach Aria runs on diesel, with 360 HP and 800 lb-ft of torque.
How much water does the Thor Motor Coach Aria hold?
The Thor Motor Coach Aria carries 91 gal. of fresh water, plus 51 gal. gray and 51 gal. black.
Where can I buy a Thor Motor Coach Aria in Southern California?
Giant RV has new Thor Motor Coach Aria models in stock. Browse live inventory online to see which location has the floorplan you want, or visit us in Colton, Downey, Montclair or Murrieta — financing and trade-ins are available.
Product information, floorplans, features, options and specifications are based on manufacturer data for the units in Giant RV’s inventory and are as accurate as possible. Specifications vary by floorplan, model year and options; check with your Giant RV dealer for current information and specifics. Photographs may show optional equipment.
