New 2026 Forest River RV Sandpiper 3990FL Fifth Wheel
Experience ultimate comfort and convenience with the Forest River Sandpiper 3990FL, featuring a spacious upper loft for kids and a chef-inspired kitchen with a center island and pantry.
Forest River Sandpiper 3990FL Fifth Wheel – Family-Friendly Luxury & Spacious Design
Top Features:
- Shower with a Seat for added comfort
- Outside Storage for all your gear
- Theater Seating for cozy movie nights
- Kitchen Island with extra counter space
- Upper Loft perfect for kids or guests
Step into the Forest River Sandpiper 3990FL fifth wheel, where luxury meets functionality. This impressive RV features a full loft area designed for little ones, complete with two bunk mats, dual wardrobe bookcases, and a wardrobe/cabinet for generous storage.
The main living area is built for relaxation and entertainment, offering five slide-outs for maximum space. Enjoy the front living room with dual hide-a-bed sofas and a 50" flat screen TV, ideal for movie nights or hosting guests. When evening comes, the living room easily transforms into a sleeping space, while you retreat to the private rear bedroom featuring a king bed slide-out, wardrobe, and a closet with washer/dryer prep—perfect for full-time RV living.
The central kitchen is a chef’s dream, equipped with a 12V refrigerator, kitchen island, ample counter space, a pantry, and a hutch to showcase your favorite dishes. The full bathroom is conveniently located and accessible to all.
Built for Comfort, Durability & Convenience
Forest River Sandpiper fifth wheels are crafted with:
- Welded aluminum framed vacuum bonded laminated superstructure
- Cambered powder-coated frame with rust prohibitor
- Fully enclosed underbelly for enhanced protection
Enjoy large tinted windows with 80/20 UV protection, or upgrade to optional dual-pane windows for added insulation. Hassle-free features include:
- 60K BTU on-demand water heater
- Full-coach water filtration system
- Tire pressure monitoring system
- Electric leveling system
Inside, you’ll find stainless steel appliances, solid surface countertops, Beachside Sundance linoleum flooring, and recessed residential lighting—all designed to make your RV feel like home.
Ready to explore in style? Don’t miss your chance to own the Sandpiper 3990FL—where comfort, space, and family-friendly features come together.
Great service, super friendly and very patient answering a hundred questions. Finance lady Christen was very helpful in getting us the best deal. All wonderful people, thank you all so much. - Tricia
You Save: $19,131
Sale Price: $78,995
Stock# 106890
| Sleeps | 8 |
| Slides | 5 |
| Length | 43 ft 6 in |
| Ext Width | 8 ft |
| Ext Height | 13 ft 4 in |
| Hitch Weight | 2825 lbs |
| GVWR | 15375 lbs |
| Dry Weight | 12439 lbs |
| Cargo Capacity | 2936 lbs |
| Fresh Water Capacity | 50 gals |
| Grey Water Capacity | 80 gals |
| Black Water Capacity | 50 gals |
| Tire Size | 16" |
| Furnace BTU | 40000 btu |
| Available Beds | King |
| Refrigerator Type | 12V Stainless |
| Cooktop Burners | 3 |
| Number of Awnings | 1 |
| LP Tank Capacity | 30 lbs |
| Water Heater Capacity | 60000 gal |
| Water Heater Type | On Demand Tankless |
| AC BTU | 30000 btu |
| TV Info | LR 50" Flat Screen TV |
| Awning Info | 20' Electric with LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
| VIN | 4X4FSAS25TJ048465 |
Sandpiper 3990FL Reviews
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