2026 Forest River Sierra 3990FL
New Fifth Wheel in Mesa, Arizona, 85213
Unit Specs
- Stock #348072
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelSierra
- Floorplan3990FL
- Type Fifth Wheel
- ConditionNew
- Length43' 0"
- Width8' 0"
- Height13' 0"
- VIN4X4FSES22TJ055395
- MSRP $114,792.00
- Price Get Price
- Need to know your payment? Use our RV Loan Calculator!
- Sleeps8
- Slideouts5
View a video of this 2026 Forest River Sierra 3990FL RV on YouTube!
2026 Forest River Sierra 3990FL Features
2026 Forest River Sierra 3990FL Specifications
Height
13' 4"
Length
43' 6"
Width
8' 0"
Dry Weight
12,439 lbs
GVWR
15,375 lbs
Hitch Weight
2,825 lbs
Payload Capacity
2,936 lbs
Refrigerator Capacity
16 cu ft
Sleep Capacity
10
Water Capacity - Black
50 gal
Water Capacity - Fresh
50 gal
Water Capacity - Grey
80 gal
# Awnings
1
# Axles
2
# Doors
1
# Slides
5
Hitch
Fifth Wheel
# A/C
2
A/C Spec
Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C
2026 Forest River Sierra 3990FL Literature
Unit Specs
- Stock #348072
- Year2026
- ManufacturerForest River
- Make Forest River
- ModelSierra
- Floorplan3990FL
- Type Fifth Wheel
- ConditionNew
- Length43' 0"
- Width8' 0"
- Height13' 0"
- VIN4X4FSES22TJ055395
- MSRP $114,792.00
- Price Get Price
- Need to know your payment? Use our RV Loan Calculator!
- Sleeps8
- Slideouts5
Estimated Payment-
Email Seller
Request More Info on this 2026 Forest River Sierra 3990FL Offered for sale by General RV Center
Related Searches:
Similar Units From General RV Center
New 2026 Forest River Columbus 389FLH
New 2026 Forest River Sierra 3710HBFB
New 2025 Forest River RiverStone 421FK
New 2026 Forest River Columbus 377DS
New 2026 Forest River RiverStone 442MC
New 2025 Forest River Sierra 3880BH
New 2026 Forest River Sierra 3800RK
Recent stories from our Blog
Similar Units for Rent
2026 Forest River Sierra 3990FL Gallery
Click on images to see them enlarged in a slideshow format