2026 Newmar Mountain Aire 4551

New Class A in Winter Garden, Florida, 34787

Unit Specs

Discover the epitome of luxury travel with the 2025 Newmar Mountain Aire 4551. This exquisite motorhome offers a harmonious blend of elegance and functionality, designed to make your journeys unforgettable. With its spacious interior, you'll find ample room for relaxation and entertainment, featuring a front living area with comfortable seating options, including a side hide-a-bed sofa and a jackknife sofa. The center kitchen is a chef's dream, equipped with a full-size electric refrigerator and a two-burner cooktop, perfect for culinary adventures on the road. Retreat to the serene center bedroom, where a king-sized bed awaits, promising restful nights. The cleverly designed rear and center bath area ensures convenience, with washer and dryer prep for added practicality. Expansive powered retractable awnings provide shade and protection, allowing you to enjoy the outdoors comfortably. Built on a robust Spartan K3 chassis with a Cummins I6 Diesel Pusher engine, this RV offers impressive power and towing capacity. Experience the ultimate in road travel luxury and adventure with the Mountain Aire 4551. For more information, visit your nearest General RV dealership.

2026 Newmar Mountain Aire 4551 Features


2026 Newmar Mountain Aire 4551 Specifications

General

MSRP

$897,916

Dimensions

Height

13' 2"

Height (interior)

6' 11"

Length

44' 10"

Width

8' 5"

Weights

Dry Weight

44,200 lbs

GVWR

54,000 lbs

Payload Capacity

9,800 lbs

Capacities

Fuel Capacity

150 gal

Refrigerator Capacity

19.7 cu ft

Sleep Capacity

8

Water Capacity - Black

60 gal

Water Capacity - Fresh

105 gal

Water Capacity - Grey

80 gal

Engine/Transmission

Engine Manufacturer

Cummins

Engine Model

Cummins 11.9L, 525HP, 1,695lb-ft torque

Fuel Type

Diesel

Transmission Spec

Allison 6-speed 4000MH

Exterior

# Awnings

1

# Axles

3

# Doors

1

# Slides

3

Chassis

SpartanK3 tag-axle

Electrical

# A/C

3

A/C Spec

15K BTU Penguin™ Heat Pump Central Air Conditioners

*MFG Specs are for base unit. Certain options may change specifications listed. Please consult dealer for more details. Data is provided by a 3rd party. RVUSA.com cannot guarantee the accuracy of the data presented.

2026 Newmar Mountain Aire 4551 Literature


Seller Info

General RV Center

12705 W. Colonial Drive
Winter Garden, FL 34787

Member Since 2005

See 333 Reviews

Unit Specs

Email Seller

Request More Info on this 2026 Newmar Mountain Aire 4551 Offered for sale by General RV Center
General RV Center
General RV Center

12705 W. Colonial Drive
Winter Garden, FL 34787

Phone: Click to Call

campground and travel trailer

Everything about RV life delivered directly to your inbox. The hottest RVs, tips & tricks, recipes, travel destinations, new gadgets & much more!

Child Eating s'mores
2026 Newmar Mountain Aire 4551 Gallery

Click on images to see them enlarged in a slideshow format