New 2026 Forest River RV Sierra 3990FL Fifth Wheel
FREIGHT, PREP, DETAIL AND WALK-THROUGH INCLUDED! ALSO, NATIONAL SHIPPING AVAILABLE!
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2026 3990FL Features and Options
New 2026 Forest River Sierra fifth wheel 3990FL highlights:
- Full and Half Lofts
- King Bed
- Walk-In Shower
- Front Living Area
- Two Tri-Fold Hide-A-Beds
- Theater Seating
What Our Customers Are Saying
Stopped in cuz steps wouldn’t retract fully and was having problems with water heater. They were really booked, but took time to help us so we could get on the road again very nice people. - Rae
Sale Price:
$72,980
Recreation USA
Location: South Myrtle Beach, SC
Stock# 15669
Location: South Myrtle Beach, SC
Stock# 15669
Stock# 15669
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2026 3990FL Specifications
| 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 |
| Refrigerator Size | 17 cu ft |
| 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 w/LED Light Strip |
| Axle Count | 2 |
| Washer/Dryer Available | Yes |
| Number of LP Tanks | 2 |
| Shower Type | Shower w/Seat |
| Electrical Service | 50 amp |
| VIN | 4X4FSES25TJ054936 |
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