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  • 1011 O'Malley Drive, Coopersville, MI 49404

2024 Sierra 4003MB


The 4003MB is a king bed, and half bunk loft coach. With 4 slideouts and a bunk loft, this floorplan has enough space for guests.  The island kitchen and theater seating provide a great space to entertain and unwind. The 4003MB is extremely versatile, utilizing the loft for storage when the sleeping space isn’t needed.


Manufacturer Installed Standard Options:


  • Automatic Electric Level-Up System
  • 2″ Towing and Accessory Hitch (N/A 3990FL, 4002FB)
  • 7,000lb axles with Anti-lock Braking System
  • GoPower 200W roof mounted solar panel with controller and battery
  • Quad MORryde® step above with strut
  • Goodyear Radial Tires
  • Color match high gloss gel coated colored exterior fiberglass
  • Painted two tone aerodynamic fiberglass front cap with improved turning radius
  • Underbelly Armor
  • TST Tire Pressure Monitoring System
  • Enclosed and heated dump valves
  • 16” Spare tire kit
  • Large tinted windows with 80/20 UV prohibitor
  • Electric awning with LED light strip
  • Prepped for Lippert On-The-Go Ladder
  • Power front jacks with spring loaded snap pins
  • 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 storage area
  • Upgraded aluminum rims
  • Oversized friction hinge entry door


  • Stainless steel appliances
  • Rustic wood plank linoleum
  • Hidden hinged, soft close drawers and cabinets
  • Solid Surface Countertops
  • Fiberglass one-piece shower with folding teak seat
  • Washer and Dryer Prep
  • Stainless steel under mounted kitchen sink
  • Decorative backsplash
  • Two color coordinated interiors
  • LED lighting throughout
  • Recessed residential lighting
  • Accent lighting over dinette
  • Mocha accent crown molding over kitchen cabinets
  • Extra large, panoramic 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
  • Ceiling fan
  • Tri-fold hide-a-bed sofa
  • Residential stain resistant carpet
  • Quilted bedspread


  • Dual 15,000BTU Ducted Air Conditioners
  • 17 cu. ft. 12V refrigerator
  • 60,000BTU tankless water heater
  • Heated Holding Tanks (12V)
  • 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)
  • 65 Amp converter
  • Power fan in bathroom


  • 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

Note:  Standard features, options, specifications and materials are subject to change without further notice.  

Additional Factory Installed Options:

  • Sierra Towables
  • Sandal Interior Color
  • Summit Interior Package
  • Chef’s Kitchen Package
  • Central Vacuum
  • RVIA Seal
MSRP: $ 94,472
$ 69,995
SAVINGS: $ 24,477
Stock Number R1472
Year 2024
Make Forest River
Model Sierra 4003MB
Class Fifth Wheel
Length 42'9"
Width 96"
Exterior Height TBD
Dry Weight 12550
Hitch Weight 2010
Fresh Water 50 GAL
Availability In Stock
VIN 4X4FSES21RJ053159
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