Used 2023 Grand Design Solitude 378MBS
+108 - SALE PRICE: $79,995
- List: $90,998
- You Save: $11,003
-
Sleeps 7
-
4 Slides
-
Walk-Around Queen BedBunkhouse
-
40ft Long
-
14,344 lbs
378MBS Floorplan
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 |
Description
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!
- Washer/Dryer
- Free Standing Dinette
- Middle Bunkhouse/Office
- Two Power Awnings
Features
Standard Features (2023)
Exterior
- Exterior Spray Port (Door Side)
- Front Cap Windshield (3550BH, 2930RL, 380FL, 382WB)
- King Jack Antenna
- High-Gloss Gel Coat Exterior Sidewalls
- Color Matched Fender Skirt
- TPO Roof Covering w/ Limited Lifetime Warranty
- Slam-Latch Baggage Doors
- Magnetic Entry and Baggage Door Catches
- Entry Door w/Privacy Glass
- Frameless Tinted Windows
- Painted Gel Coat Fiberglass Front Cap
- Roof Ladder
- 17.5" Spare Tire (Undermount)
- Power Patio Awning with Integrated LED Lighting
- Sewer Hose Storage Area
- Easy Clean Solid Surface Steps
- Keyed Alike
- SolidStep Quad Entry Steps
Construction
- Drop Frame Chassis
- Upgraded Axle Hangers
- 5-Side Aluminum Cage Construction
- Walk-On Roof
- Fully Enclosed Underbelly w/ Heated Tanks and Storage
Running Gear
- Heavy Duty 7,000 lb. Axles
- 17.5" H- Rated Aluminum Wheels
- MORryde® CRE3000 Suspension System
- ABS Braking System
Frame & Chassis
- 101" Widebody Construction
- MORryde® Pin Box
- Slide-Out Selector Valves
Interior
- Double Tri-Fold Hide-A-Bed Sofas (375RES, 378MBS, 380FL, 382WB, 390RK)
- Leaded Glass Cabinet Door Inserts (Select Areas)
- Under Step Shoe Storage (Most Models)
- Plywood Drawer Bottoms
- Premium Roller Shades
- Hardwood Window Treatments
- Congoleum Flooring w/3-Year Warranty
- Hallway Handrail
- Hardwood Cabinet Doors
- Signature Wall Mounted Dinette Table w/4 Padded Chairs
- Theatre Seating
- Tri-Fold Hide-A-Bed Sofa
- Smoke Detector, LP Alarm, Carbon Monoxide Alarm
Kitchen
- Oversized Kitchen Pantry
- LED Rope Lighting in Pantry
- Residential Kitchen Faucet with Pullout Sprayer
- Real Tile Backsplash
- Hardwood Kitchen Light Soffit
- Dishwasher Prep (280RK, 310GK, 345GK, 372WB, 373FB, 390RK)
- Hutch with Flip-Top Hidden Storage (380FL, 382WB, 390RK)
- Washer/Dryer Prep
- Solid Surface Countertops & Sink Covers
- Stainless Steel Undermount Kitchen Sink
Electrical
- 55 Amp Converter
- Under Unit LED Light Kit
- Solar Prep (10 gauge wiring with universal MC4 connectors)
- Exterior Security Light
- 50 Amp Service w/ Detachable Power Cord
- 12-Volt Battery Disconnect
- Recessed LED Ceiling Lighting
- Interior LED Accent Lighting
HVAC
- Kitchen 12-Volt High Power MaxxAir Fan with Rain Sensor
- Stealth A/C System
- 35k BTU High Capacity Furnace
- Attic Vent
- High Capacity Heat Ducts
Plumbing
- On Demand Water Heater
- Whole House Water Filtration System
- All-In-One Enclosed and Heated Utility Center
Bedroom
- Residential Style Headboard
- Under Bed Storage Area
- Individually Switched Reading Lights Over Bed
- 60" x 80" Queen Bed
- Window Above Master Bed Headboard
- Pull-Out Ottoman at Bed Base
- Dresser w/ Flip-Top Hidden Storage
- Night Stands with USB Ports
- Bedside 110-Volt Outlets (2)
Bathroom
- One-Piece Fiberglass Shower with Glass Door
- Porcelain Toilet
- Undermount Lav Sink
Appliance
- Professional Grade Stainless Steel Cooktop w/ Built-in Oven
- Stainless Steel 12 Cu. Ft. 4-Door Refrigerator
- Microwave
Electronics
- Back-Up Camera Prep
- Tire Linc TPMS System
- Satellite/Cable Prep
- Exterior Cable/Satellite Plug-In
- LED Smart TV in Living Area
- Rockford Fosgate Stereo Ent. System w/ HDMI and App Controls
- Exterior Speakers
Peace of Mind Package
- Exterior Cable/Satellite Plug-In
- Pull-Out Ottoman at Bed Base
- Dresser w/ Flip-Top Hidden Storage
- MORryde® Pin Box
- MORryde® CRE3000 Suspension System
- ABS Braking System
- 17.5" Spare Tire (Undermount)
- Slide-Out Selector Valves
- Power Patio Awning with Integrated LED Lighting
- Sewer Hose Storage Area
- Kitchen 12-Volt High Power MaxxAir Fan with Rain Sensor
- Washer/Dryer Prep
- Whole House Water Filtration System
- Easy Clean Solid Surface Steps
Max Built Construction Package
- Satellite/Cable Prep
- 101" Widebody Construction
- Heavy Duty 7,000 lb. Axles
- 17.5" H- Rated Aluminum Wheels
- High-Gloss Gel Coat Exterior Sidewalls
- Color Matched Fender Skirt
- 5-Side Aluminum Cage Construction
- Walk-On Roof
- TPO Roof Covering w/ 18-Year Warranty
- Slam-Latch Baggage Doors
- Magnetic Entry and Baggage Door Catches
- Entry Door w/Privacy Glass
- Frameless Tinted Windows
- Painted Gel Coat Fiberglass Front Cap
- Exterior Security Light
- Roof Ladder
- 50 Amp Service w/Detachable Power Cord
- 12-Volt Battery Disconnect
Residential Living Package
- LED Smart TV in Living Area
- Rockford Fosgate Stereo Ent. System w/ HDMI and App Controls
- Exterior Speakers
- Night Stands with USB Ports
- Bedside 110-Volt Outlets (2)
- Keyed Alike
- SolidStep Quad Entry Steps
- Stealth A/C System
- Stealth A/C System
- Premium Roller Shades
- Hardwood Window Treatments
- Congoleum Flooring w/3-Year Warranty
- Hallway Handrail
- Recessed LED Ceiling Lighting
- Interior LED Accent Lighting
- Hardwood Cabinet Doors
- Signature Wall Mounted Dinette Table w/4 Padded Chairs
- Theatre Seating
- Tri-Fold Hide-A-Bed Sofa
- Smoke Detector, LP Alarm, Carbon Monoxide Alarm
- Solid Surface Countertops & Sink Covers
- Stainless Steel Undermount Kitchen Sink
Weather-Tek Package
- 35k BTU High Capacity Furnace
- Fully Enclosed Underbelly w/ Heated Tanks and Storage
- Attic Vent
- High Capacity Heat Ducts
- All-In-One Enclosed and Heated Utility Center
See us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
Save your favorite RVs as you browse. Begin with this one!
Loading
*All calculated monthly payments are an estimate for qualified buyers only and do not constitute a commitment that financing or a specific interest rate or term is available. Financing terms may not be available in all Campers Inn locations. Campers Inn RV Sales is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual inventory in stock on our lot. Please contact us for availability as our inventory changes rapidly.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.