New 2026 Newmar Mountain Aire 4118 Motor Home Class A - Diesel

King Bed, Full Rear Bath, Jack-Kinfe Sofa, Private Master Suite, Dual Wardrobes - Campers Inn RV of Louisville 812-282-7718
Bed King Bath Rear
2026 4118 Features and Options

Newmar Mountain Aire 4118 Class A Diesel Motorhome for Sale at Campers Inn RV of Louisville

The Newmar Mountain Aire 4118 Class A diesel motorhome redefines luxury travel with unmatched craftsmanship, powerful performance, and a true residential feel. Designed for those who expect the best on the road, this premium coach combines elegant interior design with advanced engineering to deliver a first class experience on every journey. Whether you are traveling coast to coast or settling in for extended stays, the Mountain Aire 4118 offers comfort, style, and confidence every mile of the way.

From its spacious bath and a half layout to its refined living areas, this motorhome is built to elevate every adventure.

Key Features

Spacious Living and Entertainment Area
Relax in comfort with two sofas, including an 84 inch hide a bed and a 62 inch jackknife sofa. The hide a leaf dinette provides a versatile space for dining or working, while the Samsung LED TV on a power lift ensures great viewing from anywhere in the living area.

Chef Inspired Kitchen
Prepare meals with ease using the stainless steel 30 inch convection microwave with air fryer feature and the large Whirlpool 19.7 cubic foot refrigerator. A pantry and cabinet pull out provide convenient storage, and the nearby half bath adds extra functionality when entertaining guests.

Private Master Suite
The luxurious master bedroom features a king bed slide, dual shirt wardrobes, a dresser, and a Samsung LED TV. This space is designed for relaxation and comfort after a day of travel.

Full Rear Bathroom
Enjoy a residential style bathroom with a 40 x 32 shower with seat, linen cabinet, wardrobe storage, and a Splendide two piece washer and dryer for added convenience.

Bath and a Half Layout
The additional half bath near the kitchen makes it easy for guests to access a restroom without entering the master suite.

Exterior Shower
An exterior shower provides a convenient way to rinse off gear, pets, or outdoor equipment before stepping inside.

Powerful Performance and Construction

Built on the Spartan K3 tag axle chassis, the Mountain Aire 4118 delivers 525 horsepower and 1,695 lb ft of torque for smooth, confident driving. This advanced platform provides excellent stability and control, even on long distance journeys.

The exterior features Newmar’s industry exclusive full paint Masterpiece Finish, offering a striking appearance and long lasting durability. A fiberglass roof with an integrated gutter rail helps manage water runoff, while gel coated fiberglass sidewalls and caps provide strength and weather resistance.

Hydraulic leveling jacks make setup quick and easy, so you can spend more time enjoying your destination.

Luxury Inside and Out

Every detail inside the Mountain Aire is designed with comfort and elegance in mind. High end finishes, thoughtful storage solutions, and premium materials create a welcoming environment that feels like home. Whether you are relaxing in the living area, preparing meals in the kitchen, or unwinding in the master suite, you will appreciate the quality and attention to detail throughout.

Why Choose Campers Inn RV of Louisville

At Campers Inn RV of Louisville, we are dedicated to helping you find the perfect luxury motorhome for your lifestyle. Our experienced team provides expert guidance, a wide selection of premium RVs, and a customer focused buying experience.

We offer competitive financing options, a professional service department, and a fully stocked parts and accessories store to support you throughout your RV ownership journey.

Visit Campers Inn RV of Louisville today to explore the Newmar Mountain Aire 4118 and experience luxury diesel motorhome travel at its finest.

 
 

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What Our Customers Are Saying

This is how America should be!

Wow! I haven't had this kind of service in quite a while. Todd made me a great deal on an RV, without any bs hassle. Caden knows his stuff and got my RV ready to go all while singing cadence. I absolutely loved working with these gentlemen! They are truly a better breed of man. Keep up the outstanding work and service! I'd highly recommend them! This is how America should be! Thanks again y'all! Cheers! - Shawn
Price: $945,427
Campers Inn
Location: Louisville KY
Stock# 111009
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RV ID: 3400633#
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2026 4118 Specifications
Sleeps 5
Slides 3
Length 41 ft 10 in
Ext Width 8 ft 6 in
Ext Height 13 ft 2 in
Int Height 6 ft 11 in
Interior Color CAMDEN
Hitch Weight 15000 lbs
GVWR 54000 lbs
Dry Weight 42500 lbs
Cargo Capacity 11500 lbs
Fresh Water Capacity 105 gals
Grey Water Capacity 80 gals
Black Water Capacity 60 gals
Furnace BTU 50000 btu
Fuel Type Diesel
Engine Cummins 11.9L
Chassis Spartan K3 Tag Axle
Horsepower 525 hp
Fuel Capacity 150 gals
Wheelbase 282 in
Available Beds King
Torque 1695 ft-lb
Refrigerator Type Whirlpool
Refrigerator Size 19.7 cu ft
Convection Cooking Yes
Cooktop Burners 2
Shower Size 40" x 32"
Number of Awnings 2
Axle Weight Front 20000 lbs
Axle Weight Rear 20000 lbs
Axle Weight Tag 14000 lbs
Water Heater Type Demand
AC BTU 45000 btu
TV Info LR Samsung LED TV, BR Samsung LED TV, Overhead 43" Samsung 4K LED TV
Awning Info Nova Power
Washer/Dryer Available Yes
Gross Combined Weight 69000 lbs
Shower Type Shower w/Seat
Electrical Service 50 amp
VIN 4VZVU1E1XTC096304
For more information Contact Us

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