New 2019 Mountain Aire 4550 Motor Home Class A - Diesel

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Mountain Aire 4550 Description

Newmar Mountain Aire class A motor home 4550 highlights:

  • Quad Slide Outs
  • Hide-a-Leaf Dinette
  • Walk-Through Bathroom
  • King Bed


Come load up your family, your camping gear, and head out to your favorite quiet campground with this quad slide out Mountain Aire 4550! For your meals you can sit at the hide-a-leaf dinette. The walk-through bathroom has a private toilet along one side of this model and two sinks along the opposite side. At night come retreat to the bedroom where you will find a king bed, plenty of storage with the dresser, wardrobe, adjustable shelves, or you can even keep up with your laundry if you choose to add the optional washer/dryer!


Each Mountain Aire showcases the industry exclusive full-paint Masterpiece finish. Inside you will enjoy the sense of style from the custom-made chrome wall sconces to the textured fabric window treatments. In the living area enjoy a chaise lounge or a pair of recliners. As you travel from one destination to another enjoy the heated captain's chairs which include a queen-sized passenger seat with a footrest. In the dashboard there is a wireless charging pad for your mobile devices.


Mountain Aire 4550 Specifications

Sleeps 6
Slides 3
Length 44 ft 10 in
Ext Width 8 ft 6 in
Ext Height 13 ft 2 in
Int Height 6 ft 11 in
Interior Color Niagra, Palisade, Paloma, Windsor
Exterior Color Niagra, Palisade, Paloma, Windsor
Hitch Weight 15000 lbs
Gross Weight 54000 lbs
Dry Weight 44400 lbs
Cargo Weight 9600 lbs
Fresh Water Capacity 105 gals
Grey Water Capacity 65 gals
Black Water Capacity 45 gals
Furnace BTU 50000 btu
Generator 12.5 KW Cummins Onan
Fuel Type Diesel
Engine Cummins ISX
Chassis Freightliner SL
Horsepower 500 hp
Fuel Capacity 150 gals
Wheelbase 294 in
Number Of Bunks 1
Available Beds King
Torque 1645 ft-lb
Refrigerator Size 19.7 cu ft
Convection Cooking Yes
Cooktop Burners 2
Shower Size 50" x 34"
Number of Awnings 1
Axle Weight Front 20000 lbs
Axle Weight Rear 20000 lbs
Axle Weight Tag 14000 lbs
AC BTU 45000 btu
Awning Info Power
Gross Combined Weight 69000 lbs
Shower Type Shower w/Seat
Electrical Service 50 amp

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Newmar is a company built around the Christian faith, specifically the beginning of the Mennonite faith in 1525 under the guidance of Ulrich Zwingli, and the founding of the Amish fellowship under Jacob Amman in 1693.


At Newmar, we believe that a motor coach is more than just a vehicle, it’s a passport to countless hours of fun and a lifelong memories taken from quality time spent with family and friends.


For over 50 years, we’ve applied our principles to the creation of motor coaches that have allowed people all over the world to live the RV lifestyle. And we’ll continue to so for countless generations to come. It’s why we take pride in every rivet, weld, and mechanical function.