Used 2023 Grand Design Solitude 378MBS Fifth Wheel

“Like-New Feel, Gently Broken-In, Road-Tested Fun.” Loaded in Options, This Unit Features a Kitchen Island; Free Standing Dinette; Middle Bunkhouse/Office; Washer/Dryer; Outdoor Grill/Mini Refrigerator; Two Power Awnings!
Sale Pending Video Tour
2023 378MBS Features and Options

Grand Design Solitude fifth wheel 378MBS highlights:

  • Middle Bunkhouse/Office
  • Kitchen Island
  • Free Standing Dinette
  • Washer/Dryer
  • Outside Beverage Cooler & Grill
  • Two Power Awnings

 

2023 Grand Design Solitude 378MBS Fifth Wheel – For Sale at Campers Inn RV

Luxury, space, and four-season comfort — the 2023 Grand Design Solitude 378MBS Fifth Wheel is the ideal choice for families, full-timers, and RVers who refuse to compromise on quality. Designed with a versatile mid-bunk floorplan, high-end residential features, and Grand Design’s unmatched build quality, this fifth wheel offers everything you need to live and travel in comfort and style.

Now available at Campers Inn RV, your trusted Grand Design dealer with over 50 years of experience helping adventurers find their perfect RV.


Key Features of the 2023 Solitude 378MBS:

  • Spacious Mid-Bunk Room – Ideal for guests, kids, or a mobile office with a tri-fold sofa and built-in storage.

  • Loft Area Above Bunkroom – Perfect for additional sleeping or storage space.

  • Private Front Master Bedroom – King-size bed, large wardrobe slide, under-bed storage, and washer/dryer prep.

  • Residential Kitchen – Full-size appliances, solid-surface countertops, kitchen island, pantry, and ample cabinetry.

  • Wide Open Living Area – Theater seating, free-standing dinette, entertainment center with TV and fireplace.

  • Full Bath – Large residential shower with skylight, porcelain toilet, and plenty of vanity storage.

  • Climate-Controlled Comfort – Four-season insulation, fully enclosed and heated underbelly, Whisper Quiet A/C system.

  • Outdoor Ready – Huge pass-through storage, solar prep, automatic leveling, and MORryde suspension for smooth towing.

 

Why Buy from Campers Inn RV?

 

  • Family-Owned Since 1966 – Trusted name in the RV industry for nearly 60 years.

  • Nationwide Locations – Coast-to-coast support, service, and convenience.

  • No Hidden Fees – Transparent pricing and no surprises at signing.

  • Factory-Certified Service – Trained technicians ready to support your RV long after the sale.

  • RV Matchmakers On Staff – Our experts help you find the RV that’s truly right for your needs.


Perfect for Full-Time RV Living, Remote Work, or Extended Adventures

Whether you're traveling the country with your family or setting up a seasonal home base, the 2023 Grand Design Solitude 378MBS offers the space, comfort, and reliability you need. The mid-bunk layout gives you unmatched flexibility, while the residential features make it easy to live on the road without giving up modern comforts.


Request More Info or Schedule a Walk-Through Today!

Your next adventure starts here. Let’s get you on the road!

Options:
  • Washer/Dryer
  • Free Standing Dinette
  • Middle Bunkhouse/Office
  • Two Power Awnings
What Our Customers Are Saying

Loving our camper!

Randy was awesome to deal with! Everything went smoothly and the prices were descent! Randy was good about keeping in touch with repairs and helpful! Loving our camper! - RaeLynn
Price: $90,998
You Save: $11,003
Sale Price: $79,995
Campers Inn
Location: Raynham MA
Stock# 108085Z


2023 378MBS Specifications
Sleeps 7
Slides 4
Length 40 ft 2 in
Ext Width 8 ft 5 in
Ext Height 13 ft 5 in
Int Height 8 ft 1 in
Hitch Weight 2686 lbs
GVWR 16800 lbs
Dry Weight 14344 lbs
Fresh Water Capacity 81 gals
Grey Water Capacity 106 gals
Black Water Capacity 53 gals
Tire Size ST215/75R 17.5 LRH
Furnace BTU 35000 btu
Number Of Bunks 1
Available Beds Queen
Refrigerator Type 12V
Refrigerator Size 20 cu ft
Cooktop Burners 4
Shower Size 48" x 30"
Number of Awnings 2
Axle Weight 7000 lbs
LP Tank Capacity 30 lbs.
Water Heater Type Tankless On Demand
AC BTU 30000 btu
TV Info LR LED Smart TV, BR LED TV
Awning Info 20' and 11' Power w/Integrated LED Lighting
Axle Count 2
Washer/Dryer Available Yes
Number of LP Tanks 2
Shower Type Shower w/Seat
Electrical Service 50 amp
VIN 573FS4222PAA13990
For more information Contact Us
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