Sierra 4003MB Fifth Wheel by Forest River

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  • Factory Standards
    17 Cubic FT Stainless Refrigerator (12V), Stainless Range with Cast Iron Grates, Solid Surface Countertops, Stainless Apron Sink with Strainer, Commercial Style Kitchen Faucet, 30" Over-the-Range Stainless Microwave, Countertop Extension, Designer Backsplash
    Electric Leveling System, Goodyear Tires with 7,000lb axles, 2" Rear Receiver Hitch and 4-Pin Connector (n/a 3990FL, 4002FB), Two 15,000BTU Air Conditioners, Anti-lock Braking System, Tire Pressure Monitoring System, 60,000BTU On Demand Water Heater, 40,000BTU Furnace, BoonDocker Solar System-200W Panel with controller & battery, MORryde Steps with Strut (wherever available), Heated and Enclosed Holding Tanks (12V pads), Washer and Dryer Prep, King Wi-Fi Extender System and Olypmus Antenna, Underbelly Armor, Soft Close Residential Drawers & Cabinets Throughout, 50" Flat Screen Television, 4 Camera Security Prep with Back-Up Cam, Full Coach Water Filter System, Power Fan in Bathroom(s), Enclosed, One-Piece Docking Station, Color Matched Gel coated Fiberglass Exterior, Aerodynamic Two Tone Fiberglass Painted Front Cap with Lights, High Efficiency Radiant Foil (Roof and Floor), Spare Tire, Lippert LatchXtend Door Handle, Outdoor Grill/Griddle, Ceiling Paddle Fan (where available)
    Interior Decor
    Factory Options
    Replaces Standard Dinette Bench Seat
    3990FL No Dinette Slide
  • <!– 06/13/23 –>


    • 4 or 6 point electric level up system
    • Quad MORryde® step above with strut
    • Color match high gloss gel coated colored exterior fiberglass
    • Painted two tone aerodynamic fiberglass front cap with improved turning radius
    • Underbelly Armor
    • Enclosed and heated dump valves
    • 16” Spare tire kit
    • Large tinted windows with 80/20 UV prohibitor
    • Electric awning with LED light strip
    • Lippert Ladder Prepped
    • Power front jacks with spring loaded snap pins
    • 16” E-Rated Radial tires
    • Automotive-style fender skirts
    • Hitch light
    • Porch light with interior switch
    • 30 lb. double LP tanks with auto change over
    • Two exterior speakers
    • Rain gutters with extra long drip spouts (prevents black streaking)
    • Insulated heavy duty slam lock baggage doors
    • Exterior foldable grab handle
    • Unobstructed pass thru area
    • Upgraded aluminum rims
    • Oversized friction hinge entry door
    • GoPower 190W roof mounted solar panel with controller and battery


    • Stainless steel appliances
    • Rustic wood plank linoleum
    • Decorative backsplash
    • Two color coordinated interiors (Cocoa, Pearl)
    • Soft close full extension drawer glides
    • Stainless steel under mounted kitchen sink
    • LED lighting throughout
    • Recessed residential lighting
    • Accent lighting over dinette
    • Mocha accent crown molding over kitchen cabinets
    • Extra large picture windows throughout
    • Vented side windows in slideouts
    • TV antenna with booster
    • Solid wood drawer fronts with birch sides
    • Upgraded raised panel cabinet doors with designer rails
    • Bedroom slideout fascia
    • Memory foam mattress
    • Teddy Bear® bunk mats
    • 50” flatscreen TV
    • Premium soundbar with built in DVD player
    • Designer window treatment accented per décor
    • Ceiling fan
    • Tri-fold hide-a-bed sofa
    • Residential stain resistant carpet
    • Quilted bedspread


    • High Performance 15K A/C (second A/C prep)
    • 16 cu. ft. 12V refrigerator
    • Living room A/C
    • Floor ducted 35,000 BTU furnace
    • 30” OTR stainless steel microwave
    • Three burner high output range with 22” oven
    • Interior monitor panel for holding tanks
    • Satellite and cable hookup with RG-6 cable for high quality picture
    • Porcelain foot flush toilet(s)
    • 10 Gal. DSI water heater
    • 65 Amp converter
    • Power fan bathrooms
    • Heated Holding Tanks (12V)


    • Welded aluminum-framed, vacuum bonded laminated superstructure
    • 3/8″ roof decking
    • Cambered powder coated frame with rust prohibitor
    • Fully enclosed underbelly
    • 5” truss roof rafters
    • R-10 sidewall construction
    • Laminated sidewalls
    • Laminated slideout walls


    • Smoke alarm
    • Fire extinguisher
    • Breakaway switch (Battery hook-up required)
    • Dead-bolt lock on entry door
    • LP/CO gas detector
    • Fire escape windows
  • Specification Imperial Metric
    Cargo Capacity 2,891 lbs 1,311.34 kg
    Dry Weight 12,609 lbs 5,719.35 kg
    GVWR 15,500 lbs 7,030.68 kg
    Pin Weight 2,010 lbs 911.72 kg
    Overall Length 42' 9" 13.03 m
    Overall Width 96" 243.84 cm
    Black Water Tank 50 gal 189.27 l
    Fresh Water Tank 50 gal 189.27 l
Retail Price $93,122
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** All information contained on this website is believed to be accurate at the time of publication. However, during the model year, product revisions occur and manufacturers reserve the right to make these changes without notice. This includes pricing, colors, materials, equipment, and specifications as well as the addition or discontinuation of models shown on this website.