# Thor Motor Coach Aria 3901

> Bath and a half, rear bath

3901 is a class a floor plan by Aria (Thor Motor Coach).

## Specs (2027 model year)

| Spec | Value |
| --- | --- |
| Length | 39 ft 11 in |
| Sleeps | 6 |
| Slide-outs | 3 |
| GVWR | 35,320 lbs |
| MSRP | $440,860 |

## Model years

2027, 2026, 2025, 2024, 2022, 2021. Year-specific specs: `https://rvenvy.com/class-a-motorhomes/thor-motor-coach/aria/3901?year={year}`

## Overview

Powering everything is a Cummins ISB-XT 6.7L diesel with 360 horsepower and 800 lb-ft of torque, backed by a 6-speed Allison transmission and Air-Ride suspension — a drivetrain combo that owners consistently credit for the comfortable, confidence-inspiring ride. Inside, the rear bath layout centers on a King bed with Thor's Tilt-A-View inclining mechanism, an oversized full-height fiberglass shower with a skylight overhead, and solid surface countertops — while the cab-over bunk with its power drop-down mechanism adds flexible sleeping space up front. The bath-and-a-half configuration keeps morning routines from bottlenecking, and the outdoor entertainment setup extends the living space outside. Cockpit amenities lean into the premium feel too, with a 14" touchscreen dash radio supporting Android Auto and Apple CarPlay, heated power mirrors with integrated side cameras, and blind spot detection standard.

## Floor plan tags

bath and a half, rear bath

## Inventory

31 units currently for sale priced $112,999 to $339,995: https://rvenvy.com/class-a-motorhomes/thor-motor-coach/aria/3901/inventory

Floor plan diagram: https://images.rvenvy.com/57cf18f4d5c5ba9da7f073bea7ac774904f84ac89568254ca1b6db8065a44cad/1024.webp

Canonical page: https://rvenvy.com/class-a-motorhomes/thor-motor-coach/aria/3901