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Scan to view the latest Inventory at our Campers Inn RV of Louisville Location
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+69-
Sleeps 5
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3 Slides
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Bath and a HalfRear Bath
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42ft Long
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42,500 lbs
4118 Floorplan
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 |
| 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 |
Description
Newmar Mountain Aire Class A Diesel Motorhome 4118 – Luxury Travel at Its Finest
Step into a world where luxury, power, and craftsmanship come together seamlessly. The Newmar Mountain Aire 4118 is built for travelers who demand the very best, offering a residential feel paired with the strength and performance of a premium diesel coach. From the spacious bath and a half layout to the stunning interior design and advanced construction, this coach delivers a first–class experience in every mile. Whether youre relaxing with friends, exploring coast to coast, or settling in for long term travel, the Mountain Aire 4118 elevates every adventure.
Key Features
Interior Living and Comfort
With two spacious sofas, an 84 inch hide a bed and a 62 inch jackknife sofa, theres room to unwind, entertain, or stretch out after a long day on the road. The hide a leaf dinette provides a comfortable space for meals or work, and the power lift Samsung LED TV ensures easy viewing from every seat.
Chef Inspired Kitchen
Cooking becomes a pleasure with a stainless steel 30 inch convection microwave with air fryer feature, a large Whirlpool 19.7 cu. ft. refrigerator, pantry storage, and a convenient cabinet pull out. A half bath located near the kitchen adds easy access during meal prep and makes hosting guests more convenient.
Luxury Bedroom Suite
Retreat to the private master suite featuring a king bed slide, dual shirt wardrobes, a dresser, and a Samsung LED TV. Attached is a full rear bath with a 40 x 32 shower with seat, linen cabinet, wardrobe, and a Splendide two piece washer and dryer for ultimate onboard convenience.
Performance and Construction
Built on the Spartan K3 tag axle chassis with 525 HP and 1,695 lb ft of torque, the Mountain Aire delivers confident handling and powerful performance. Newmars industry exclusive full paint Masterpiece Finish ensures a stunning exterior that lasts, while the fiberglass roof and integrated gutter rail add long term durability. Hydraulic leveling jacks simplify setup at any campsite.
Exterior Features
The exterior shower offers quick cleanups after outdoor activities, and the gel coated fiberglass sidewalls and caps showcase the signature Newmar quality from every angle.
Features
Standard Features
Exterior
- Full-Paint Masterpiece Finish™ with Cut & Buff with Beta Fusion Protection on Front Cap
- Lighted Newmar Badge in Front Grill
- Convex Exterior Mirrors with Remote Control, Defrost, Turn Signals and Side View Cameras
- Chrome Power Baggage Door Locks, Keyless Entrance Door with Touch Pad and Door Bell
- Entrance Door with Automatic Step
- Rear Hitch for Towing Car
- Assist Handle at Entrance Door
- Mud Flaps
- Rear Protective Tow Guard with Stainless Steel Newmar Name Cutout
- Undercoating
- Hydraulic Leveling Jacks
- Stainless Steel Exterior Trim Pieces and Entrance Door Kick Panel
- Storage Bins in Pegboard Compartment
Optional
- Stainless Steel Trim Kit for Onyx Package
- Stainless Steel Trim Kit for Exterior Compartment Doors
- Flag Pole Bracket
- Storage Tray 24" x 56" Non-Power Location-Bay 2
- Storage Tray 24" x 56" Non-Power Location-Bay 3
- Storage Tray 24" x 58" Power Location-Bay 2
- Storage Tray 24" x 58" Power Location-Bay 3
- Storage Tray 26" x 90" Power Location-Bay 2
- Storage Tray 26" x 91" Non-Power, Location-Bay 2
- Storage Tray 40" x 90" Power, Location-Bay 2
- Storage Tray 40" x 90" Power, Location-Bay 3
- Storage Tray 42" x 91" Non-Power, Location-Bay 2
- Storage Tray 42" x 91" Non-Power, Location-Bay 3
- Storage Tray 43" x 56" Non-Power, Location-Bay 3
- Storage Tray 43" x 56" Non-Power, Location-Bay 4
Construction
- Fiberglass Roof and Integrated Gutter Rail
- Gelcoated Fiberglass Exterior Sidewalls, Front and Rear Caps
- Aluminum-Frame Sidewalls & Roof Construction, 16" on Center
- 5/8" Foam Insulation Laminated in Sidewalls & Ceiling
- Polar Pak R19 Batten Insulation on Roof
- Automatic Mechanical Lock Arms on Non Hydraulic Slideout Rooms-Paddle Style
- Egress Door with Ladder System
Chassis
- Spartan K3 Tag Axle 525 HP
- Air Leveling System
- Aluminum Wheels
- Electronic Chassis Information Center in Dash
- Electronic Stability Control
- Cruise Control
- Comfort Drive™ Steering with Power Column & Adjustable Control
- Steering Wheel Nine Function Switch Pod in Center on Spartan® Chassis
- Recessed Fuel Fills with Crossover to Fill from Either Side
- Back-Up Alarm
- Anti-Lock Braking System
- Chassis Battery Disconnect
- Automatic Headlights ON/OFF
- Push Button Engine Start
- Glass Dash Instrumental Panel
- On Guard Collision Mitigation Adaptive Cruise System with Adj. Following Distance Control on Spartan Chassis
- Tire Pressure Monitoring on Tag Axle Chassis
- Mobile Eye Lane Tracking and Lane Departure Warning System
- Valid Digital Glare Free Dash on Spartan® Chassis
- Valid Generation 3 TPMS System on Spartan® Chassis
Optional
- Spartan Chassis Onyx Package
- Curt Spectrum Integrated Brake Control on Spartan Chassis
- Blind Spot Detection
Mechanical and Electrical
Windows, Awnings, and Vents
- Frameless Double-Pane Tinted Safety-Glass Windows
- Fantastic® Vent with Rain Sensor in Kitchen, Bathroom and Enclosed Stool Room
- Hardwood Louvered Cover on Fantastic® Vent in Kitchen
- Skylight Above Shower*
- Girard Package-Two Nova Side Awnings, Slideout Covers, Entrance Door & Power Window Awnings
- One Piece Tinted Windshield
- Driver Side Power Window
- Large Non-Ventilated Living Room and Dinette Windows
Optional
- Kitchen Window
Air Conditioning and Heating
- Three 15K BTU Penguin™ Heat Pump Central Air Conditioners with Remote Control Thermostat on 41’ and 45’ Floor Plans
- Two 15K BTU Penguin™ Heat Pump Central Air Conditioners with Remote Control Thermostat on 38’ Floor Plan
- Chinook Dual Loop Heat with Continuous Hot Water
- Dash Heater and Air Conditioner
- Driver & Passenger Dash Overhead Ventilation System
- Wall Mounted Sensors for Heating and Air Conditioning
- Roof Air Conditioning Drainage System
- Electric Radiant Heat Installed Below Main Floor Tile
Electrical
- 10 Kw Cummins Onan® Diesel Generator on 38’ Floor Plans
- 12.5 Kw Cummins Onan® Diesel Generator on 41' and 45' Floor Plans
- 50 Amp Electrical Service with Flexible Cord with Automatic Transfer Switch
- Eight 6-Volt AGM House Batteries
- Battery Disconnect Switch for House Battery
- 10 Watt Solar Panel to Charge Chassis Battery
- 3000 Watt True Sine Inverter
- 12 Volt Auxiliary Receptacle on Dashboard
- Emergency Engine Start Switch
- Engine Block Heater
- Energy Management System
- Exterior Security Lights
- Midship Side Turn Signals
- LED Lights Recessed in Ceiling and Underneath Overhead Cabinets
- Accent Lights in Feature Ceiling, Slideout Fascia Trim and Lambrequins
- LED Lighting in Pull Out Pantry, Kitchen and Bathroom Base Cabinets
- LED Lights in Exterior Storage Compartments on Automatic Switches
- LED Lights Installed Under Door Side Slideouts
- Lights in Wardrobes
- Manually Operated Hold-To-Run Slideout Switch
- Automatic Generator Start on Low Battery or Temperature Setting
- Cable TV Connection
- Interior Courtesy Lights
- USB Outlet at Dinette & Bedroom Night Stand
- USB Outlet at Dash for Driver Use
- Power Rewind Wheel with 50’ Cord*
- Recessed Docking Lights
- KIB Touch Screen Interior Light and Shade Controls
- Secondary Multiple Touch Screen in Bedroom
- Silverleaf® Multiplex Electrical Wiring System
- Rozie Remote Internet Connection for Silverleaf Multiplex System
- Newmar App to Control Numerous Features from Personal Device
- Solar Prep with Six Gauge Wire from Roof to House Battery Compartment
- Spare Fuses in Chassis and House Fuse Panels
- Wireless Phone Charger Pad in Driver Area
- Wireless Charging Mat Built into Passenger Console
- 110 Volt Recept in Bed Overhead with Two Pass Through Ports
- 110 Volt/USB Outlet at Head of Each Bunk*
- Dimmable with Adjustable Aim Reading Lights at Head of Bed
- Transfer Switch with Surge Protector
- Dash Radio, Cameras and Monitors to Power-up from both House Batteries and Ignition
Optional
- LED Strip Lighting Installed Under Off Door Side Slideouts
- Four Flexible 100 Watt Solar Panels on Roof
- Lithium Ion 640 AHR Battery System with Two 3000W Pure Sine Inverters
- Lithium Ion 960 AHR Battery System (Three Batteries) with Two 3000W Pure Sine Inverters
Plumbing
- Demand Water System
- Sewage Holding-Tank Rinse
- Dometic® 321 China Bowl Stool or Macerator Stool*
- Aqua Miser Shower System
- Tiled Shower Walls with Glass Door
- Soap Dispenser in Shower
- Fold Down Shower Seat
- Water Filter for Entire Unit
- Exterior Shower
- Auto Fill for Fresh Water Tank
- Power Water Hose Reel
- Hot Water Line to Generator Area*
- Bladder Tank for Water Pump System
Optional
- Assist Handle in Shower
- RV Sanicon Turbo System
Interior
Cabinets and Furniture
- Sable Maple Hardwood Cabinets-Suede Finish
- Concealed Hinges on Cabinet Doors
- Super Polished Solid Surface Countertop in Kitchen with Under Mounted Stainless Steel Sink and Sink Covers
- Super Polished Solid Surface Countertop in Bathroom and Bedroom
- Cooktop Cover Flush, Matching Countertop Material
- Lifts on Bed Top
- Pullout Pantry Shelves*
- Push to Release Drawer Slides in Pantry
- Soft Close Cabinet Doors*
- Pantry with Space for Serving Trays and Bakeware
- Drawers with Dove Tail Sides with Self Closing Full Extension Ball Bearing Guides
- Leather Sofa and Front Seats with Integrated Seat Belts
- Driver Seat with Vibrator for Haptic Feedback
- Driver and Passenger Seats with Power Headrest
- Driver and Passenger Seats Heated with Power-Lumbar, Recline, Footrest and Standard Width Passenger Seat
- Plush Pillow Top Mattress
- Side Hide-A-Bed Sofa with Memory Foam Mattress*
- Full Height Wardrobes Beside Lav*
- Mesh Cell Phone Holder at Each Bunk Bed*
- Molded Silverware Divider Tray
- Dinette Euro Booth with Two Table Leaves and Two Folding Chairs*
- Bed Base Power Incline Retract with R5 Air Mattress on 3825 Floor Plan
Optional
- Morel Maple Hardwood Cabinets—High Gloss or Suede Finish
- Sable Maple Hardwood Cabinets—High Gloss
- Sedona Maple Hardwood Cabinets—High Gloss or Suede Finish
- Summit Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Morel Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Sable Maple Hardwood Cabinets—High Gloss or Suede Finish
- Two-Tone Summit Maple and Sedona Maple Hardwood Cabinets—High Gloss or Suede Finish
- R5 Radius Corner Air Mattress*
- Power Extenda Flex Dinette
- Combination Desk and Dinette with Buffet Table, Two Fixed and Two Folding Chairs
- Dinette Convertible with Two Fixed and Two Folding Chairs that Face Window
- Euro Booth Dinette with Two Table Leaves and Two Folding Chairs
- Two Recliners with Lampstand and Reading Lights
- Two Ottomans*
- Passenger Seat Queen-Size
- 74" Powered Theater Seating
- 84" Powered Theater Seating
- 87" Powered Theater Seating
Appliances
- 30” Stainless Steel Convection Microwave with Air Fryer Feature
- All Electric Cooktop Flush Mount Induction
- Air Horns
- 19.7 Cu. Ft. Whirlpool® Refrigerator
- Splendide Two-Piece Stacked Washer/Dryer
- 3.0 Cf Dometic Freezer on Pullout Tray in Exterior Baggage Compartment*
- Storage Shelf Above Freezer
- Central Vacuum with Tool Kit
Optional
- Dishwasher in Drawer with Stainless Steel Front
- Beverage Center Dual Zone
Interior
- Designer Feature Ceiling and Cathedral Ceiling with Added Height on Rear Bath Floorplans*
- Tile Floor in Kitchen, Bathroom, Bedroom and Living Area
- Auto Motion Power Shades and Lambrequins
- Auto Motion Power Shades for Windshield and Driver/Passenger Side Windows
- Hardwood Window Sills
- Hardwood Raised Panel Interior Passage Doors
- Flush Handles on Swinging Bath Doors
- Interior Assist Handle at Main Entry Door
- Fitted Non-Quilted Bedspread with Accent Pillows
- Safe Located in Bedroom Wardrobe
- Waste Basket in Kitchen Base Under Sink
- Maximized Shoe Storage Shelves Recessed in Rear of Wardrobe
Entertainment
Audio and Video
- Samsung® LED TV in Living and Bedroom Areas* (TV Sizes Vary Per Floor Plan)
- 43" Samsung® 4K LED TV in Front Overhead
- 50" Samsung® 4K LED TV on Televator in Living Area*
- Bose® 500 Subwoofer
- Bose® 900 SoundTouch Soundbar in Living Room
- Xite Dash Radio with Apple CarPlay®, Ultra-Wide 20" Screen with Nav-N-Go Navigation System
- Xite HD 360 Camera System with Predictive Grid Lines and Tri-View Rear Camera
- Rear-View Color Monitor System with Audio
- Winegard Rayzar Automatic Digital TV Antenna
- Satellite Dish Prep on Roof
- Two Bedroom Radio Speakers
- TV Jack and 110-Volt Recept in Door Side Exterior Storage Compartment
- Cat 6 TV Cables
- Infrared Repeater System to Operate Audio and Visual Components
- WiFi Ranger Denali/Spruce LTE
- 10 Bc Fire Extinguisher, Smoke Detector, Propane and Carbon Monoxide Detector
Optional
- Radio SiriusXM® Capability with Antenna (Does not include monthly subscription)
- Exterior Entertainment Center in Sidewall with 43" Samsung® 4K LED TV and Soundbar
- Exterior Entertainment Center in Storage Compartment with 43" Samsung® 4K LED TV and Bose® Soundbar
- WiFi System Everest with Aspen Interior Router
- Winegard Automatic Open Face Satellite Dish-for DISH HD and Bell HD TV
- Winegard Automatic Open Face SWM Satellite Dish-for DIRECTV Std/HD and In-Motion DIRECTV Std, DISH Std/HD
- Winegard Automatic Open Face SWM Satellite Dish-for DIRECTV Std/HD
- Winegard Automatic Open Face Satellite Dish and Winegard In-Motion-for DISH Network
- Winegard Automatic In Motion Dome Satellite Dish
- Extra Monitor on Passenger Side
- Rear Camera (2) Prep for Use with Stacker Trailer
- Universal Toll Module
- Starlink Internet System
See us for a complete list of features and available options!
All standard features and specifications are subject to change.
All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.
Due to the current environment, our features and options are subject to change due to material availability.
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*All calculated monthly payments are an estimate for qualified buyers only and do not constitute a commitment that financing or a specific interest rate or term is available. Financing terms may not be available in all Campers Inn locations. Campers Inn RV Sales is not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual inventory in stock on our lot. Please contact us for availability as our inventory changes rapidly.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.
Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. Where an image has a stock image indicator, please confirm specific unit details with your dealer representative.



