Travel in style, power, and comfort with this 2021 Thor Motor Coach Aria 3901, a high-end Class A diesel pusher built for extended adventures and full-time living. With triple slide-outs, a residential layout, and premium features throughout, this coach delivers a true luxury motorhome experience from the driver’s seat to the master bedroom.
Built on a Freightliner chassis and powered by a Cummins diesel engine, the Aria 3901 blends performance, reliability, and upscale living in a stunning, modern coach.
⭐ Key Highlights
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Length: approx. 39’ 2”
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Chassis: Freightliner XC-Series
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Engine: Cummins ISB 6.7L Turbo Diesel (360 HP)
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Transmission: Allison 3000 MH 6-speed automatic
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3 Slide-Outs for massive interior space
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RV King-size bed
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Residential refrigerator
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Automatic leveling jacks
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Up to 10,000 lbs towing capacity
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Onan 8,000-watt Quiet Diesel generator
⚙️ Exterior Features & Systems
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Full-body paint
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Power patio awning + window awnings
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Exterior entertainment center with TV
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LED lighting throughout
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Huge pass-through storage bays
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Side & rear-view cameras
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Automatic hydraulic leveling
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100 gallon fresh water capacity
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10-gallon water heater
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Enclosed, heated underbelly
Built for comfort in all seasons.
📏 Specifications
Feature Details Length 39’ 2” Engine Cummins ISB 6.7L (360 HP) Torque 800 lb-ft Transmission Allison 3000 Fuel Type Diesel Slides 3 Generator Onan Quiet Diesel 8.0 kW Fresh Water ~100 gallons Gray / Black ~75 / 50 gallons LP Tank ~40 gallons Towing Capacity Up to 10,000 lbs Bed Size RV King Washer/Dryer Prep included
🌄 Why Choose the Aria 3901?
The Thor Aria 3901 is perfect for:
✅ Full-time RV living
✅ Luxury road trips
✅ Families & extended stays
✅ Anyone wanting a premium diesel Class A at a great valueIt offers everything you’d expect from a high-end coach – power, beauty, space, and comfort.
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