CamperHardlyKnowHer

Thor Motor Coach Aria 3401

Class Abuilt 2017–25Mixed build tierCommon on the used market
WHAT ONE COSTS
price not published

The maker never published an MSRP for this floorplan. Unknown is not cheap — treat any asking price against comparable models, not against zero.

THE SPECS
Length34.8 ft
Height (incl. A/C)12.5 ft
Width8.4 ft
Interior height7.0 ft
GVWR32,400 lb
Dry weightnot published
Sleeps4
Slide-outs2
Fresh water91 gal
Grey water51 gal
Black water51 gal
Air conditioning30,000 BTU
Awning20 ft
Fuel100 gal
Engine / chassisCummins ISB-XT 6.7L 360HP/800 lb-ft, Freightliner XC-R, Allison MH-3000
GeneratorOnan RV QD 8000 diesel

A missing row means the maker never published that figure — unknown, not zero.

WHERE PEOPLE SLEEP
  • King bed with Tilt-A-View inclining mechanism(Permanent)72×80
  • Power drop-down hide-away overhead cockpit bunk(Stow-away)48×74
  • Driver-side leatherette sofa bed (optional)(Convertible)
HOW IT'S BUILT — 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Thor Motor Coach (Mixed tier): Thor Aria

YEAR BY YEAR — WHAT CHANGED
  • 2017Introduced
  • 2020Listed at 34'-7"; overhead bunk 48×76
  • 2021Length listed 34'-9"; brochure width shown 96" (101" before and after)
  • 2024Furnace up to 40,000 BTU; overhead bunk 48×74
  • 2026Dropped from the lineup
FINDING ONE

Common — usually several for sale within a day’s drive. Why: Thor Motor Coach is a volume manufacturer; 9-year production run. Estimated from build volume and production span — not a count of live listings.

THE READ

The short one - under 35 ft so it fits state and national park sites that turn away 40-footers, but still a real diesel pusher with a king bed.

OTHER ARIA FLOORPLANS
Is the 3401 your #1 — or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about — set your priorities as sliders and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from manufacturer spec sheets, retrieved 2026-07.