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New
Fifth Wheel

2026 Keystone Sprinter 3980FBS

Length: 42.98
Slides: 4
Sleeps: 8
Dry Weight: 12881
Stock#: M3792
VIN# 4YDFSTU27T4530297

Sale Price

$77,887

MSRP Price

$97,194

Est. Payment*

$520 mo.

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2026 Keystone Sprinter 3980FBS Details

Stock#: M3792
VIN#: 4YDFSTU27T4530297
Year: 2026
RV Type: Fifth Wheel

This RV is for sale at our

Mt. Vernon Location

The 2026 Keystone Sprinter 3980FBS is a brand new fifth wheel crafted to offer exceptional space and comfort for families and groups ready to embrace the freedom of RV living. Designed with a generous sleeping capacity of 8, this RV ensures everyone can rest comfortably after a day filled with adventure. Its four expansive slide outs dramatically increase the interior living space, providing a bright and open environment perfect for socializing, dining, or relaxing. You will appreciate the dedicated bunkhouse, which adds versatile sleeping arrangements and extra privacy, making this model great for families with children or guests. Equipped with powerful front and rear level jacks, set up becomes effortless and stable regardless of campsite terrain. Outside, two spacious awnings create inviting shaded areas that extend your living space outdoors, perfect for meals or enjoying nature. Weighing in with a dry weight of 12,881 pounds and a GVWR of 16,700 pounds, this RV strikes a balance between substantial build quality and reliable towing capacity. Every feature has been thoughtfully placed to enhance convenience while on the road or at your destination. The new condition and zero mileage assure you of a pristine RV experience ready for endless journeys. Located in Mt. Vernon, the Keystone Sprinter 3980FBS embodies flexibility, comfort, and style demanded by discerning travelers. As a family owned, award winning local RV dealer with multiple locations in Sumner, Everett, Kent, and Mt. Vernon Washington, Poulsbo RV here to help you find the perfect RV. Stock#: M3792, VIN: 4YDFSTU27T4530297.
Bathroom (Standard)
Bathroom Flooring Type (Vinyl)
Bathroom Location (Rear / Center)
Bathroom Medicine Cabinet (Standard)
Bathroom Medicine Cabinet Location (Rear / Center)
Bathroom Mirror (Standard)
Bathroom Mirror Location (Rear / Center)
Bathroom Sink (Standard)
Bathroom Sink Location (Rear / Center)
Bathroom Vent / Fan System (Standard)
Bathroom Vent / Fan System Location (Rear / Center)
Bed Spreads (Standard)
Beds (Standard)
Bluetooth Audio (Yes)
Bunkhouse (Yes)
Door Type (Plastic / Glass)
Fireplace (Standard)
Full Size Master Bedroom Closet (Yes)
Kitchen / Living Area (Standard)
Kitchen / Living Area Flooring Type (Vinyl)
Kitchen Location (Center)
Kitchen Table Configuration (Bench Seats)
Layout (Oven / Stove)
Living Area Location (Center)
Master Bedroom (Standard)
Master Bedroom Door Style (Conventional Door)
Master Bedroom Flooring Type (Vinyl)
Master Bedroom Location (Front / Center)
Master Bedroom Mirror Doors (Yes)
Master Bedroom Shades / Curtains (Yes)
Material (Vinyl)
Max Sleeping Count (8)
Microwave Oven (Standard)
Mobile App Instrumentation (Yes)
Number Of Bathrooms (2)
Number Of Bunk Beds (4)
Number Of Convertible / Sofa Beds (1)
Number Of King Size Beds (1)
Number Of Oven Burners (3)
Number Of Radios (1)
Number Of Recliner / Rockers (2)
Number Of Televisions (1)
Oven / Stove (Standard)
Oven Depth (in) (21)
Oven Depth (mm) (533.4)
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)
Satellite (Yes)
Satellite TV System (Standard)
Shower (Standard)
Shower Location (Rear)
Sink / Faucet (Standard)
Speaker Location(s) (Interior / Exterior)
Speakers (Standard)
Television (Standard)
Toilet (Standard)
Toilet Location (Rear / Center)
Toilet Type (Porcelain)
Wi-Fi Capable (Yes)
Wireless / Connectivity (Standard)
Awning (Standard)
Awning Length (ft) (25)
Awning Length (m) (7.6)
Body Material (Aluminum)
Construction (Standard)
Doors (Standard)
Exterior Shower (Standard)
Leveling Jack Type (Front Power / Rear Power)
Leveling Jacks (Standard)
Number of Awnings (2)
Number of Doors (1)
Number of Slideouts (4)
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)
Air Conditioning (Standard)
Air Conditioning Prewiring (Prewiring) (Yes)
Air Conditioning Type (Automatic)
Back-Up Camera (Prewiring) (Yes)
Battery (Standard)
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) (30000)
Heater (Standard)
Heater Type (Automatic)
Hitch Lights (Standard)
Prewiring (Prewiring) (Standard)
Propane Tank Gauge (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)
Trailer Level Gauge (Standard)
Voltage Meter (Standard)
Washer / Dryer Prewiring (Prewiring) (Yes)
Water Heater Pump Power Mode (Electrical)
Water Heater Tank (Standard)
Water Pump Power Display (Standard)
Air Conditioning (Standard)
Air Conditioning Prewiring (Prewiring) (Yes)
Air Conditioning Type (Automatic)
Back-Up Camera (Prewiring) (Yes)
Battery (Standard)
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) (30000)
Heater (Standard)
Heater Type (Automatic)
Hitch Lights (Standard)
Prewiring (Prewiring) (Standard)
Propane Tank Gauge (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)
Trailer Level Gauge (Standard)
Voltage Meter (Standard)
Washer / Dryer Prewiring (Prewiring) (Yes)
Water Heater Pump Power Mode (Electrical)
Water Heater Tank (Standard)
Water Pump Power Display (Standard)
Curtains / Shades (Standard)
Interior Decor (Standard)
Interior Wood Finish (Yes)
Paint (Standard)
Wallpaper (Yes)

2026 Keystone Sprinter 3980FBS Floorplan

Let us help you find your RV.
It’s easy to look for RVs online, but it’s not always easy to find the right RV.
Payments Beginning at
$520 mo.
* On approval of credit. Loan term length 240 months at 7.99% APR.

2026 Keystone Sprinter 3980FBS Video

2026 Keystone Sprinter 3980FBS 3-D Viewer

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Get Pre-Approved

Payments Beginning at $520 mo.
* On approval of credit. Loan term length 240 months at 7.99% APR.
This RV is made by Keystone a leading manufacturer in the RV industry, known for delivering quality and dependable recreational vehicles.
The RV is a Fifth Wheel, this is a versatile choice for camping, road trips, and extended travel.
The length of this RV is 42.98 feet. It provides ample room for travel and adventure, offering a spacious design that meets a variety of needs.
The floor plan name is 3980FBS, also know as the model number.
The UVW (Unloaded Vehicle Weight) of this RV is 12881 pounds. It offers a perfect balance for towing, and efficiency.
This RV is equipped with 4 slide outs. It is thoughtfully designed to maximize space, comfort, and functionality for all travelers.
This RV is located at our Mt. Vernon store.
The average payment is about $520 per month on approval of credit.

Yes you can apply for RV financing on our website. Click here to apply online.

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*RV information, pricing, features, options, and availability are subject to change without notice. While we strive for accuracy, please contact Poulsbo RV to confirm current pricing, availability, specifications, features, and included equipment prior to purchase. Photos may be representative and may not reflect the actual unit in stock. Please confirm the RV is currently in stock before visiting. Sold units may take 7–10 days to be removed from our website. Advertised prices exclude applicable sales tax, license, registration, and government fees. A negotiable documentary service fee of up to $200 may be added to the sale price. Pre-delivery inspection services may be included at an additional cost. Charges vary based on the year, type, and condition of the RV.*

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More Fifth Wheel Choices at Poulsbo RV

Today’s luxury fifth wheels offer more comfort, technology, and residential features than ever before, and at Poulsbo RV, you can compare a wide variety of premium fifth wheel brands, floorplans, and luxury styles all in one place.

Instead of being limited to a single manufacturer, our inventory includes lightweight luxury models, residential-style interiors, and full-time living fifth wheels from top brands like Keystone, Forest River, and CrossRoads—giving you more ways to match your RV to the way you travel.

Why should you compare mulitiple Fifth Wheel Brands?

  • More floorplans and layouts to choose from
  • Lightweight, family-friendly, and full-time living options
  • Easier towing choices available in select models
  • Compare luxury features, sizes, and interior styles
  • Find the right balance of comfort, weight, and value

Find the best match with our large selection of choices

Lightweight towing
Arcadia Super Lite

Family camping
Sprinter

Luxury value
Sabre

Residential comfort
Avalanche

Premium full-time living
Alpine

High-end luxury living
Redwood

When you buy from Poulsbo RV, you get what most dealers simply can’t offer.

It’s more than just a purchase; it’s ongoing support from a team that’s ready for everything your RV needs. With convenient service centers, expert service  technicians, and a knowledgeable support staff, you’re never alone on the road when you’re part of the Poulsbo RV family.

Service Departments  

Our expansive service departments are designed with the space, tools, and experienced technicians to handle everything from basic maintenance to major repairs. Whether you own a diesel motorhome or a lightweight towable, we have the capacity and expertise to keep you on the road.

Service Techs

With a large, skilled service team in place, we can serve more RVs more efficiently—delivering quicker turnarounds, dependable repairs, and consistently high-quality results.

RV Parts

We maintain one of the largest RV parts inventories in the region, so you can get what you need, when you need it. And our knowledgeable staff is always here to help you find the right solution.

When you buy from us, service isn’t an afterthought.

From the moment you buy, we’re ready to support you for the long haul.

Four Locations

Family-owned and operated

Over 39 years of RV experience

Award-winning RV dealer

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RV Consignments
Parts and Service

Poulsbo RV Kent

23031 Military RD. South
Kent, WA 98032

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Mon – Fri: 8:30am – 5:00pm
Sat: Closed
Sun: Closed

Mon – Fri: 8:00am – 5:00pm
Sat: 9:00am – 2:00pm
Sun: Closed

Poulsbo RV Sumner

2006 136th Avenue East
Sumner, WA 98390

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Mon – Fri: 8:00am – 5:00pm
Sat: Closed
Sun: Closed

Mon – Fri: 8:00am – 5:00pm
Sat: Closed
Sun: Closed

Poulsbo RV Everett

12218 Highway 99 South
Everett WA, 98204

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Mon – Fri: 8:30am – 6:00pm
Sat: 8:30am – 7:00pm
Sun: Closed

Mon – Fri: 8:30am – 5:30pm
Sat: Closed
Sun: Closed

Poulsbo RV Mt. Vernon

510 Eleanor Lane
Mt. Vernon, WA 98273

Mon – Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Mon – Fri: 8:00am – 5:00pm
Sat: Closed
Sun: Closed

Mon – Fri: 8:00am – 5:00pm
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Financing terms

Payments for Poulsbo RV.com are based on 20% cash down, plus taxes, charges, and licensing, subject to credit approval and tier 1 credit rating by the lender. The payment is subject to change based on credit scores, conditions, model year, RV type, and price. The term length for RV financing varies depending on the year and sale price, with options for 240 months, 180 months, and 120 months. For travel trailers, financing term lengths are usually under 120-180 months, while some Fifth Wheels and Motor Homes can be financed for up to 180 or 240 months. Please contact us for current rates and terms on the RV you are interested in. Please note that searching online for payments on Poulsbo RV is a guideline. Additionally, the dealer may charge a documentary service fee of up to $200.