Close STOCK12392N
VIN4X4FSAS29TJ048419
Floor Plan
New 2026 Forest River Sandpiper 3990FL near Lapeer, MI
- MSRP
- $97,040
- Discount
- - $21,045
- Sale Price
- $75,995
View Description
Details
The 2026 Forest River Sandpiper 3990FL is the kind of fifth wheel that stops people in their tracks—a true must-see if you want luxury, space, and that “we finally upgraded” feeling the second you walk in.
Up front, it’s a full-on front-living-room wow factor with room for…The 2026 Forest River Sandpiper 3990FL is the kind of fifth wheel that stops people in their tracks—a true must-see if you want luxury, space, and that “we finally upgraded” feeling the second you walk in.
Up front, it’s a full-on front-living-room wow factor with room for everyone to sprawl out, laugh loud, and stay awhile—theater seating + opposing tri-fold sofas make it feel like a high-end lounge on wheels. Add the big pop-up TV, and you’ve got the perfect setup for movie nights, game days, and hosting friends like you’re at your own vacation home.
Then there’s the feature buyers don’t expect until they see it: the hidden loft and a half. It’s the ultimate bonus space—perfect for extra sleepers, a kids’ hangout zone, or that “everything has a place” storage room that keeps the rest of the coach looking clean, open, and classy.
And this one isn’t just pretty—it’s built for real camping. The 4-season capability and residential feel make it a unit you can enjoy longer throughout the year, with comfort and quality that shows in every detail.
If you’re looking for a fifth wheel that feels high-end, spacious, and unforgettable—the Sandpiper 3990FL is the one you need to walk through. Come see it in person and make it yours before someone else does.(more)
Up front, it’s a full-on front-living-room wow factor with room for everyone to sprawl out, laugh loud, and stay awhile—theater seating + opposing tri-fold sofas make it feel like a high-end lounge on wheels. Add the big pop-up TV, and you’ve got the perfect setup for movie nights, game days, and hosting friends like you’re at your own vacation home.
Then there’s the feature buyers don’t expect until they see it: the hidden loft and a half. It’s the ultimate bonus space—perfect for extra sleepers, a kids’ hangout zone, or that “everything has a place” storage room that keeps the rest of the coach looking clean, open, and classy.
And this one isn’t just pretty—it’s built for real camping. The 4-season capability and residential feel make it a unit you can enjoy longer throughout the year, with comfort and quality that shows in every detail.
If you’re looking for a fifth wheel that feels high-end, spacious, and unforgettable—the Sandpiper 3990FL is the one you need to walk through. Come see it in person and make it yours before someone else does.(more)
Model
3990FL
Stock #
12392N
VIN
4X4FSAS29TJ048419
Slideouts
5
Pull Type
Fifth Wheel
GVWR
15375
Payload
2936
Length
43
Sleeping Capacity
8
Dry Weight
12439
View Details
Features
Safety
Carbon Monoxide Detector (Standard)
Emergency Exit(s) (Standard)
Number Of Emergency Exits (1)
Propane Alarm (Standard)
Smoke Detector (Standard)
Exterior
Awning (Standard)
Awning Length (ft) (20)
Awning Length (m) (6.1)
Body Material (Aluminum)
Construction (Standard)
Doors (Standard)
Leveling Jack Type (Front Power / Rear Power)
Leveling Jacks (Standard)
Number of Awnings (1)
Number of Doors (1)
Number of Slideouts (5)
Pass-Thru Storage (Standard)
Power Retractable Awning (Yes)
Power Retractable Slideout (Yes)
Rear Bumper Drain Hose Carrier (Standard)
Roof Vents (Standard)
Sidewall Construction (Fiberglass)
Sky Light (Standard)
Slideouts (Standard)
Interior
Bathroom (Standard)
Bathroom Flooring Type (Vinyl)
Bathroom Location (Center)
Bathroom Medicine Cabinet (Standard)
Bathroom Medicine Cabinet Location (Center)
Bathroom Mirror (Standard)
Bathroom Mirror Location (Center)
Bathroom Sink (Standard)
Bathroom Sink Location (Center)
Bathroom Vent / Fan System (Standard)
Bathroom Vent / Fan System Location (Center)
Bed Spreads (Standard)
Beds (Standard)
Bluetooth® Audio (Yes)
Brand Name (JBL)
Bunkhouse (Yes)
Ceiling Fan (Standard)
Door Type (Plastic / Glass)
Fireplace (Standard)
Full Size Master Bedroom Closet (Yes)
Kitchen / Living Area (Standard)
Kitchen / Living Area Flooring Type (Carpet / Vinyl)
Kitchen Location (Center)
Kitchen Table Configuration (Chairs)
Layout (Oven / Stove)
Living Area Location (Front)
Master Bedroom (Standard)
Master Bedroom Door Style (Conventional Door)
Master Bedroom Flooring Type (Vinyl)
Master Bedroom Location (Rear)
Master Bedroom Mirror Doors (Yes)
Master Bedroom Shades / Curtains (Yes)
Material (Vinyl)
Max Sleeping Count (8)
Microwave Oven (Standard)
Number Of Bathrooms (1)
Number Of Bunk Beds (2)
Number Of Convertible / Sofa Beds (2)
Number Of King Size Beds (1)
Number Of Oven Burners (3)
Number Of Radios (1)
Number Of Recliner / Rockers (2)
Number Of Sofas (2)
Number Of Televisions (1)
Oven / Stove (Standard)
Oven Depth (in) (24)
Oven Depth (mm) (609.6)
Overhead Fan (Yes)
Power Vent Fan (Standard)
Radio (Standard)
Recliners / Rockers (Standard)
Refrigerator (Standard)
Refrigerator Power Mode (Electric)
Refrigerator Size (Full-Size)
Retractable Roof Antenna (Standard)
Shower (Standard)
Shower Location (Center)
Sink / Faucet (Standard)
Sink Cover / Cutting Boards (Standard)
Sofa (Standard)
Sofa Material (Vinyl)
Speaker Location(s) (Interior / Exterior)
Speakers (Standard)
Television (Standard)
Toilet (Standard)
Toilet Location (Center)
Toilet Type (Porcelain)
Wi-Fi Capable (Yes)
Wireless / Connectivity (Standard)
Mechanical
Air Conditioning (BTUs) (30000)
Air Conditioning (Standard)
Air Conditioning Prewiring (Prewiring) (Yes)
Air Conditioning Type (Automatic)
Back-Up Camera (Prewiring) (Yes)
Battery (Standard)
Battery Converter Amps (65)
Battery Power Converter (Yes)
Black Water Holding Tank Gauge (Standard)
Brakes (Standard)
Cable Prewiring (Prewiring) (Yes)
Exterior Flood Lights (Standard)
Exterior Plugs (Standard)
Freeze Proof Insulation (Standard)
Fresh Water Holding Tank Gauge (Standard)
Front Brake Type (Not Applicable)
Gray Water Holding Tank Gauge (Standard)
Ground Fault Plugs (Standard)
Heat Prewiring (Prewiring) (Yes)
Heater (BTUs) (40000)
Heater (Standard)
Heater Type (Automatic)
Hitch Lights (Standard)
Prewiring (Prewiring) (Standard)
Rear Brake Type (Electric Drum)
Rear Hitch (Standard)
Rear Hitch Type (Receiver)
Satellite Prewiring (Prewiring) (Yes)
Size (cm) (5.1)
Size (in) (2)
Solar (Prewiring) (Yes)
Solar Battery Charger (Standard)
TV Antenna Prewiring (Prewiring) (Yes)
Tankless Water Heater (Yes)
Washer / Dryer Prewiring (Prewiring) (Yes)
Water Heater Pump Power Mode (Electrical / Propane)
Water Heater Tank (Standard)
Water Pump Power Display (Standard)
Testimonials
My wife and I would like to thank everyone at International RV world in Bay City for the excellent sales experience and also for the great service in prepping our new 2023 Cedar Creek cottage CCK. Their service department took great care in inspecting...
D
Dale Ricker
Every time I've gone in, Chris has been a fantastic help in the service department. Always going above and beyond! Eddie always does a great job sourcing any parts I may need, and Mike does a phenomenal job cleaning! Great team over there!
J
Jakob Bellon
Best experience with a dealer ever. Wendy and the whole crew were very helpful and very caring. I would recommend RV world to anyone looking for a new or used RV. We are very happy with our fifth wheel.
J
Jeannette Clark
Dealership Information
Sales
Monday9:00am - 6:00pm
Tuesday9:00am - 6:00pm
Wednesday9:00am - 6:00pm
Thursday9:00am - 6:00pm
Friday9:00am - 6:00pm
Saturday9:00am - 5:00pm
SundayClosed
Service
Monday9:00am - 5:00pm
Tuesday9:00am - 5:00pm
Wednesday9:00am - 5:00pm
Thursday9:00am - 5:00pm
Friday9:00am - 5:00pm
SaturdayClosed
SundayClosed
Parts
Monday9:00am - 5:00pm
Tuesday9:00am - 5:00pm
Wednesday9:00am - 5:00pm
Thursday9:00am - 5:00pm
Friday9:00am - 5:00pm
Saturday9:00am - 5:00pm
SundayClosed
Body Shop
Monday9:00am - 5:00pm
Tuesday9:00am - 5:00pm
Wednesday9:00am - 5:00pm
Thursday9:00am - 5:00pm
Friday9:00am - 5:00pm
SaturdayClosed
SundayClosed
Disclaimer
All RV Payments are with approved Tier 1 credit, 10% DOWN and exclude tax, tag, title and fees. Disclaimer **Subject to change without notice. See dealer for complete details. Pictures shown are for illustration purposes only. Actual unit may vary.