"Your source for new and used Newmar Trailers and Newmar RVs - A Service of RVUSA.com"

A Service of


2018 Newmar Mountain Aire 4047 500HP, Rear Steer TAG - For Sale in Winter Garden, FL.

  • Stock #9320
  • Year2018
  • ManufacturerNewmar
  • MakeNewmar
  • ModelMountain Aire
  • Floorplan4047 500HP, Rear Steer TAG
  • TypeDiesel Pusher
  • ConditionNew
  • Mileage1,161
  • Length40' 0"
  • MSRP$615,241.00
  • Sale Price$429,900.00
  • Sale! In Stock Special
  • ChassisSpartan K3
  • Engine ManufacturerCummins
  • Engine ModelISX 11.9L 500HP
  • Fuel TypeDiesel
  • InteriorHawthorn w/ Essex Features, Bermuda Maple Glazed C
  • ExteriorCustom King Aire Ashford. This coach pops!
  • Sleeps4
  • Water Capacity (Fresh)105
  • Water Capacity (Black)45
  • Water Capacity (Grey)65
  • Air Conditioners3
  • A/C Spec15k W/Heat Pumps
  • GVWR54000
  • Slideouts3
  • Dry Weight43700
  • Payload Capacity10300
  • Tow/Hitch Weight15000

Looking for power? This 40' luxury coach sits on a Spartan® K3 chassis with the STAR platform, fueled by a Cummins® 500 horsepower diesel engine, and complemented with an Allison 4000 auto transmission. This thing will run!

This custom Mountain Aire is equipped with State of the Art Comfort Drive with the Rear Steer Passive TAG Axle, a 360 degree camera system and the Adaptive Cruise with Collision Avoidance System. Don’t let the 40-foot length fool you. Although this Mountain Aire is compact, having one full-wall slide and two regular slide-outs, there is plenty counter space, cabinet space, and room to sprawl out and relax!

  • Upgraded Climate Control: All electric coach with heated floors, (3) oversized central 15K roof ACs with heat pumps. Hydronic heat!
  • Upgraded Appliances & Electronics: Residential Refrigerator, Induction Cook Top, Central Vacuum, Dishwasher, Washer/Dryer, Basement Freezer. Xite Radio with Navigation, Front 40" TV, Exterior 40" TV and Entertainment, WiFi Ranger Sky3 Router, WiFi Cellular Prep, Multi Dish Prep, Solar Prep, Sirius Prep, Surge Protector.                                                                                                                
  • Upgraded Comforts: Window Awning Pac, Power MCD Shades, Heated Seats, Sleep Number mattress, Docking Lights, LEDs Under Slide, Safe, Keyless Entry with Stainless Steel Trim, (3) Slide Trays.

To learn more about this Newmar Mountain Aire, give Independence RV a call at (844) 335-3010 and speak with one of the knowledgeable representatives about this luxury diesel pusher.  Independence RV is just a few minutes away from the famous Central Florida theme parks and attractions. 


Sales: Open Monday - Friday 9:00 a.m. - 6:00 p.m. Saturday 9:00 - 5:00 p.m. Closed Sundays.

Parts & Service: Monday - Friday 8:00 a.m. - 5:00 p.m. Closed on weekends. 

12705 West Colonial Dr. Winter Garden, FL 34787 




  • Dryer
  • Enclosed Water Tank
  • Icemaker
  • Microwave
  • Oven
  • Refrigerator
  • Residential Refrigerator
  • Stainless Appliances
  • Stove Top Burner
  • Washer
  • Water Heater


  • 50 Amp Service
  • Air Conditioning
  • Auxiliary Battery
  • Batteries
  • Converter
  • Fantastic Fan
  • Generator
  • Inverter
  • Slide-out Battery Tray
  • Solar Panels


  • AM/FM/CD
  • Backup Camera
  • Blu-Ray Player
  • CD Player
  • CO Detector
  • DVD Player
  • GPS Navigation
  • Heat Pump
  • LP Detector
  • Satellite Prepped
  • Smoke Detector
  • Surround Sound System
  • Televator TV
  • TV
  • TV Antenna


  • Air Assist Suspension
  • Alloy Wheels
  • Automatic Leveling Jacks
  • Awning
  • Backup Monitor
  • Black Tank Flush
  • Custom Paint
  • Diamond Shield Paint Protection Film
  • Egress Door
  • Exterior Speakers
  • Exterior Stereo
  • External Shower
  • Fiberglass Sidewalls
  • Full Body Paint
  • Hitch
  • Keyless Entry
  • Leveling Jacks
  • Outside Entertainment Center
  • Power Awning
  • Power Entrance Step
  • Power Roof Vent
  • Roof Vent
  • Side View Cameras
  • Skylight
  • Slideout
  • Slide-out Awning
  • Thermal Pane Windows
  • Tinted Windows


  • 6-Way Power Driver's Seat
  • Air Mattress
  • Bath & 1/2
  • Central Vacuum
  • Day/Night Shades
  • Free Standing Dinette w/Chairs
  • Glass Shower Door
  • Heated Floor
  • King Size Bed
  • Medicine Cabinet
  • Non-Smoking Unit
  • Pantry
  • Recliner(s)
  • Roof Vents
  • Self Contained
  • Shower
  • Toilet
Independence RV Sales
12705 W. Colonial Drive
Winter Garden, Florida 34787
Toll-Free: 866-387-4268
Phone: 407-877-7878
Fax: 407-573-0127
Site: http://www.independencerv.com/

More Listings

Contact Seller

Need Advice?

Join us on our popular forums at www.rvtalk.com where hundreds of RV enthusiast just like you ask questions, share opinions, and enjoy each others company - You'll be glad you did.

Our RV Destinations section will give you a starting point to plan your next journey or camping trip. Designed to provide everyone from full timers to occasional campers a complete resource, this section has links to campgrounds, resorts and local areas of interest all over the US.

Finally, our RV Insurance sections allow you to get quotes from the top providers.