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Supreme Aire

2023 45' Newmar Supreme Aire 4509 CA Compliant

Stock#: 8342

In Stock!

As Low As* : $803,277.00
Call for Best Price!

This is a big moment for us at IWS. We are proud to welcome Newmar to the IWS family. Over the years, we have had the privilege to experience Newmar through the Class A industry, and we have always been impressed with their quality and their incredible interior. When Newmar announced they are bringing a Super C to the market, our ears immediately perked up. We are proud to be partners with Newmar and represent their brand. We are bringing along their Super Star line, as well as their Supreme Aire line. This coach is the Newmar Supreme Aire. It is built for those that are looking for more power, the latest innovations in driver safety technology, and the finest interior finishes in the industry. With the Detroit Diesel DD13 engine, you can feel the power beneath you with 505 HP and 1,850 ft. lbs of torque. The Supreme Aire is built on the Freightliner M2-112 chassis, which boasts the On-Guard Collision Mitigation System. The Supreme Aire sets the tone for the industry with its interior finish as well as Villa furniture, heated tile flooring, and Newmar’s signature style cabinetry finishes. We can’t wait for you to join us on this journey with Newmar!


This coach is In Stock!

*As Low As Is Price Based Upon Conditional Rebates. Contact Us For More Details


Standard Chassis Features

  • Freightliner M2-112 Chassis with Premium Air Mounted Cab
  • Detroit Diesel DD13 Engine-505 Hp with 1,850lb ft Torque
  • Allison 4000 TRV 6 Speed Automatic Transmission
  • On Guard Collision Mitigation System
  • 18,000lb Detroit Front Axle with Taper Leaf Heavy Duty Suspension
  • 40,000lb Detroit R Series Tandem Rear Axle with Hendrickson PRIMAAX EX Rear Air Suspension
  • GVWR 58,000lb GCWR 72,000lb
  • 3.91 Gear Ratio
  • 30,000lb Towing Capacity
  • Full Double Steel Frame Construction (7/16″ Thick Steel)
  • 1400 sq Inch Aluminum Radiator for Heavy Duty Applications
  • 300 AMP Brushless Pad Mount Alternator for House Battery Charging while Driving
  • Bendix Air Disc Front and Rear Brakes
  • Michelin X Line Energy Z 315/80R22.5 20 Ply Radial Front Tires
  • Michelin X Line Energy Z 295/80R22.5 16 Ply Radial Rear Tires
  • Alcoa Ultra One 22.5″ 10 Hub Aluminum Front Wheels
  • Alcoa Ultra One 22.5″ 8.25″ Hub Aluminum Rear Wheels (Outside Wheels)
  • Driver Controlled Locking Differential
  • LED Headlights
  • Anti Lock Braking System
  • Chassis Battery Disconnect
  • Electronic Stability Control
  • Air Horns
  • Engine Block Heater
  • Power and Heated Remote Control Mirrors
  • Power Window and Power Door Locks
  • Electronic Cruise Control
  • 18″ Leather Wrapped Steering Wheel with Tilt & Telescoping Features
  • Tire Pressure Monitor
  • 5 Year/100,000 mile Chassis Warranty
  • 5 Year/100,000 mile Engine Warranty
  • 5 Year/Unlimited miles Transmission Warranty

Note – “Chassis Specs Are Subject to Change Without Notice”

Standard Exterior Features

  • 45′ Mid-Entry Floorplan, One and a Half Bath, (3) Slides – 4509
  • Gel coated Fiberglass Exterior Sidewalls, Front and Rear Caps
  • One Piece Fiberglass Roof and Integrated Gutter Rails
  • Aluminum Framed Sidewalls and Roof Construction with 16′ on Center Cross Members
  • Convex Exterior Mirrors with Defrost and Remote Control
  • Chrome Exterior Mirrors
  • Keyless Entry with Key Pad and Doorbell for Front Entry Door
  • Side Swing Baggage Doors; with Remote Lock / Unlock Painted Paddle Latches
  • Chrome Handle Power Baggage Door Lock in Lieu of Painted Door Handles
  • LED Lights Inside Of Storage Compartments
  • Large Entry Door Assist Handle
  • Radius RV Entrance Door w/Screen and Deadbolt
  • Fiberglass Molded Tank Covers and Cab Entry Steps
  • Automatic Hydraulic Triple Entrance Step
  • Mud Flaps Behind Rear Wheels
  • Undercoat Underside of Coach
  • Newmar Signature Fiberglass Rear Cap with Stainless Steel Exterior Trim Pieces with Storage
  • Newmar Signature Fiberglass Front Cap and Transition
  • Chrome LED Docking lights on Rear Wheel Skirts & Rear Bumper
  • Egress Door with Ladder System


  • High Intensity Exterior LED Security Light, One Installed on Passenger Side
  • Mid-Ship Side Turn Signals
  • Exterior LED Accent Lights Underneath Curb Side Slides (Solid Color)


  • 30,000lb. Adjustable Hitch with 2″ Reducer and Drawbar with 2″ and 2″-5/16″ Ball (2,000lb. Tongue Rating)
  • Rear Protective Tow Guard with Stainless Steel Newmar Letters
  • Electronic Trailer Brake Controller Prep


  • 5/8″ Bead Foam Insulation Laminated in Ceiling in Conjunction with Polar Pak Batten Insulation and Kraft Vapor Barrier (R-24 Roof Value)
  • 5/8″ Bead Foam Insulation Laminated in Sidewall in Conjunction with Polar Pak Batten Insulation and Kraft Vapor Barrier (R-11 Sidewall Value)
  • 5/8″ Floor Decking in Conjunction with Polar Pak Batten Insulation and Polyethylene Moisture Barrier (R-16 Floor Value)
  • Insulated Basement and Cargo Compartments (R-4 Basement Value)


  • Full 4 Color Paint with Masterpiece™ Graphics with Clearcoat Finish
  • Beckford Full Painted Exterior Graphics
  • Diamond Shield Paint Protection


  • Automatic Mechanical Lock Arms on Slide out Rooms-Scissor Style
  • HWH Premium Flush Floor Slide with Tile Floor
  • Newmar Signature Hardwood Slide Out Fascia
  • Removable Transport Pads for Under Slide out Rollers
  • Awning Slide Toppers on All Slide Outs


  • (2) Girard Nova Roof Mounted Awnings (Two Stage)
  • Carefree Powered Window Awning


  • Skylight over Shower
  • Window Treatment- Fabric Valance over the Top of Window
  • Bonded Thermopane Frameless Windows
  • Power Operated Day/ Night Roller Shades with Auto Motion Feature
  • Sky Window with Power Shade integrated in Aerodynamic Front Cap

Added Exterior Options

  • Flag Pole Bracket **Added Option
  • Storage Tray 39″ x 56″ Non-Power, Location-Bay 5**Added Option


  • IWS Outside Lighting Package**Added Option
    • (2) High Intensity Exterior L.E.D Light Package
    • (1) Light Driver Side
    • (1) Light Passenger Side
  • Exterior LED Accent Lights Underneath Road Side Slides (Solid Color)**Added Option


  • 60″ x 15″ Window in Kitchen**Added Option

Standard Interior Features

  • 7′ Interior Height
  • Premium Padded Vinyl Ceiling with Designer Feature Panels
  • Cab Rail Privacy Curtains
  • Decorative Wall Coverings with Accent Coverings in Slide Out Rooms
  • Hardwood Raised Panel Design Interior Passage Doors
  • Interior Assist Handle at Main Entry Door
  • Power Stepwell Cover
  • Quilted Bedspread with Accent Pillows
  • Wastebasket in Kitchen Base Under Sink
  • Shoe Storage Shelves Recessed in Rear Cap of Wardrobe
  • Cathedral Ceiling in Rear


  • Avalon Interior Décor Package


  • Hide-A-Leaf Dinette Table with Two Fixed and Two Folding Chairs with LED TV On Power Lift Behind
  • Designer Bedspread with Pillows
  • Deluxe Padded Headboard
  • Air Ride Driver and Passenger Seats with Pneumatic Lumbar Support
  • Lifts on Bed Top
  • Safe Located In Bedroom Wardrobe


  • Maple Hardwood Face Frame Cabinets with Mitered Raised Panel Doors
  • Concealed Hinges on Cabinet Doors
  • Molded Silverware Divider Tray
  • Soft close Full Extension Ball Bearing Drawer Guides Throughout
  • Cedar Lined Rear Closet
  • Pull-Out Pantry Shelves with Travel Latch


  • Deluxe Carpeting with Pad, Living Room Slide out and Bedroom
  • Electric Radiant Floor Heat Throughout Entire Coach


  • Polished Solid Surface Kitchen Countertops
  • Stainless Steel Deep Bowl Kitchen Sink with Solid Surface Covers
  • Polished Solid Surface Countertop in Bathroom and Bedroom


  • Whirlpool® 19.7 Cf. Refrigerator
  • All Electric Flush Mount Induction Cooktop with Matching Countertop Cover
  • Stainless Steel Convection Microwave Oven
  • Splendide® Two-piece Stacked Washer/Dryer
  • Central Vacuum with Tool Kit

Added Interior Options


  • 74″ Powered Theater Seating with Reading Lights and Lighted Cup Holders in lieu of Hide-A-Bed Sofa (4051) **Added Option
  • Sleep Number R5 Radius Corner Air Mattress**Added Option


  • “Raised Panel Stain Color: Driftwood Glazed Maple**Added Option
  • (60 Sheen Matte Finish)**Added Option


  • IWS Signature Series™ Custom Hand Picked Flooring – King Aire Wooden Olive **Added Option


Standard Water system Features

  • Porcelain Electric Macerator Toilet
  • Water Heater Bypass System
  • 60 Gal Gray Waste Storage Tank & 40 Gal Black Waste Storage Tank.
  • 150 Gallons Fresh Water Storage Tank
  • 12 Volt Black and Gray Tank Dump Valves
  • Water Management Systems Monitor Panel
  • Black Tank Flush
  • 110 Volt Holding Tank Heaters – Both Gray and Black Tanks
  • Whole House Water Filtration
  • Aqua Miser Shower System
  • Tiled Shower with Glass Door
  • Fold Down Shower Seat
  • Flush Handles on Swinging Bath Doors
  • Power Retractable Water Hose Reel
  • 12 Volt High Capacity, On-Demand Water Pump
  • Exterior Shower
  • Auto Fill in Water Works Compartment

Added Water system Options

  • Assist Handle in Shower **Added Option
  • Sani Con Macerator Sewage System**Added Option
  • Hot Water Line Run to Front Door Side Storage Bay**Added Option

Standard Mechanical Features

  • Oasis Hydronic Zone Diesel Heat with Continuous Hot Water
  • Fan-Tastic Vent with Rain Sensor in Kitchen and Bathroom
  • 4-Point Auto Leveling System
  • (3) 15,000 BTU Penguin Low Profile Roof A/C w/Heat Pumps – 45′
  • Ducted Heating and Air Conditioning
  • LP/CO & Smoke Detectors, Fire Extinguisher
  • Roof A/C Purge Pumps with Condensation Lines to bottom of coach
  • Wall Mounted Temperature Sensors for Heating and A/C
  • 12.5 KW Onan Quiet Diesel Generator
  • Battery Disconnect Switch for House Batteries
  • 10 Watt Solar Panel to Charge Chassis Batteries*****
  • Automatic Generator Start System
  • 50 AMP Electrical Service with Flexible Cord on Power Cord Reel with Automatic Transfer Switch and Surge Protector
  • SilverLeaf Multiplex Electrical and Lighting System with LCD Display Touch Screen
  • Secondary Multiplex Touch Screen in Bedroom
  • USB/110V Charging Outlets at Bedroom Nightstands and Dinette
  • Emergency Engine Start Switch
  • USB Outlet at Dash for Driver Use
  • Manually Operated Hold-To-Run Slideout Switch
  • Spare Fuses in Chassis and House Fuse Panels
  • Energy Management System
  • Dimmable/Adjustable Reading Lights at Head of Bed
  • Energy Efficient LED Flush Mount Ceiling Lighting Throughout
  • Interior Courtesy Lights
  • LED Accent Lights in Feature Ceiling, Slideout Fascia Trim and Lambrequins
  • LED Lighting in Pull-Out Pantry, Kitchen and Bathroom Base Cabinets
  • LED Lights Installed Under Door Slide Slideouts
  • 110 Volt Receptacle in Bed Overhead with Two Pass-Through Ports
  • LED Lights in Wardrobe Closet

Added Mechanical Options

  • 4 Flexible 100 Watt Solar Panels On Roof**Added Option
  • Lithium Battery Upgrade (2) 320 AH Lithium Ion Battery Packs**Added Option
  • (2) 3000 W Pure Sine Inverters**Added Option
  • Solar Prep With 6 Gauge Wire Ran From The Roof To House Battery Compartment**Added Option
  • (2) – 110 Volt Receptacles in Backsplash above Kitchen Counter**Added Option
  • 110/USB Receptacle at Each End of the Sofa**Added Option
  • 110 Receptacle in a Curb Side Compartment**Added Option
  • 110 Receptacle in a Road Side Compartment**Added Option
  • 50 Amp Receptacle Run from Generator to the Rear Compartment on the Road Side**Added Option

Standard Electrical Features

  • Samsung LED 4K TV and DVD Player in Living and Bedroom
  • Samsung 50″ LED 4K TV on Televator in Living Area
  • Bose 700 SoundTouch Soundbar System
  • Bose 500 Subwoofer
  • Xite Dash Radio 9″ Monitor with Rand McNally Navigation
  • Remote Navigation Programming Via SD Card****
  • (2) Bedroom Radio Speaker
  • Color Rear and Side View Cameras
  • Omniview NS360 Camera System
  • Cat 6 TV Cables
  • CB Radio Prep with Antenna
  • 12 Volt Auxiliary Receptacle on Dashboard
  • Cable TV Connection
  • Satellite Dish Prep on Roof
  • Infrared Repeater System to Operate Audio/Visual Components
  • Exterior Park Cable Hookup with 110 Volt Receptacle and TV Jack in Storage Compartment
  • Winegard Rayzar Automatic Digital Tv Antenna
  • Winegard Everest with Aspen Interior Router

Added Electrical Options

  • Exterior Entertainment Ctr. w/ Samsung 43″ LED TV and Soundbar in Storage Compartment**Added Option
  • Sirius/XM Satellite Radio Capability with Antenna (Requires Customer Subscription)**Added Option
  • Rear Camera Prep for Use with a Trailer**Added Option
  • Wingard Trav’ler Direct TV SWM3 HD Stationary Satellite -(Receivers Not Included)**Added Option

This 2023 Newmar Supreme Aire comes with the IWS Advantage Package!

Advantage Package

  • 5 years free roadside assistance.
  • Your motorcoach will be filled with fuel at delivery.
  • Your motorcoach will be filled with propane at delivery.
  • New Apple iPad 32GB with Cellular & WiFi Capabilities with a protective case.
  • Exclusive IWS video library showing you how to use all of the features of your new motor coach, preloaded onto a new iPad.
  • Exclusive access to the Member’s Only section of our website.
  • Exclusive 24 hour access to our service department, 7 days a week.
  • Exclusive one-on-one training on how to use, service, and maintain your new motorcoach.
  • Free night stay at our exclusive RV Park.

This Coachs' Floorplan

Newmar Supreme Aire 4509

This Floor plan may show optional features that are not on every unit.

*Please note that due to changes at factory, specifications, dimensions, features, and options may change at anytime without notice*

Supreme Aire Specifications

MODEL 4051
OVERALL HEIGHT (to top of AC) 13’2″
Wheelbase 309″ + TA
FRESH WATER (gal) 150
BLACK (gal) 40
GRAY (gal) 60

Due to continued improvement, changes in suppliers and design; features, options, appliances, equipment, colors, material specifications, prices, and model availability are subject to change without notice.

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