Click For Lowest Price

New 2026 Newmar Supreme Aire 4129

Motor Home Super C - Diesel

Stock #6145

McKee RV

Year-End Clearance Sales Event

1 of 56

+56

MSRP: $801,084

Payments From: $3,879 /mo.

42ft long
37,000 lbs
Sleeps 4

3 slides
12.8L Detroit DD13
525 HP

See All Specs

Specifications

Sleeps	4	Slides	3
Length	41 ft 11 in	Ext Width	8 ft 6 in
Ext Height	13 ft 2 in	Int Height	6 ft 11 in
Interior Color	Sable / Summit - Saguaro	Exterior Color	Portage
Hitch Weight	20000 lbs	GVWR	41000 lbs
Dry Weight	37000 lbs	Cargo Capacity	4000 lbs
Fresh Water Capacity	150 gals	Grey Water Capacity	85 gals
Black Water Capacity	52 gals	Furnace BTU	50000 btu
Generator	8.0kW Cummins Onan Diesel Quiet	Fuel Type	Diesel
Miles	1197	Engine	12.8L Detroit DD13
Chassis	Freightliner Cascadia 116	Horsepower	525 hp
Fuel Capacity	100 gals	Wheelbase	349 in
Available Beds	King	Torque	1850 ft-lb
Refrigerator Type	Whirlpool	Refrigerator Size	19.7 cu ft
Convection Cooking	Yes	Cooktop Burners	2
Shower Size	40" x 30"	Number of Awnings	2
Axle Weight Front	18000 lbs	Axle Weight Rear	23000 lbs
Water Heater Type	Oasis	AC BTU	30000 btu
TV Info	LR 50" 4K LED TV on Lift, BR Samsung LED TV	Awning Info	Nova Side
Washer/Dryer Available	Yes	Gross Combined Weight	61000 lbs
Shower Type	Shower w/Seat	Electrical Service	50 amp
VIN	1FVAHTDV4TLWH5065

Description

Newmar Supreme Aire Super C diesel motorhome 4129 highlights:

Freightliner Cascadia 116
Detroit DD13 - 500Hp / 1,850 lb-ft Of Torque
DT12 Transmission
Onyx Package
Theater Seats
Booth Dinette
In Floor Heat
Dishwasher
Stacker Washer / Dryer
960 Ahr Lithium Ion Battery W/2 3,000W Pure Sine Inverters
Starlink
Power Shades
Carefree Window Awning Package

You will feel right at home in this motorhome! The full rear bathroom has a 40" x 32" shower with a seat to freshen up in each morning, a wardrobe and a safe, and a Splendide two-piece stacked washer and dryer. Inside the master suite is a king bed slide for more interior space, a dresser with shirt wardrobes on either side, and a Samsung LED TV. The half bathroom is conveniently next to the kitchen so you can get back to preparing dinner on the all electric flush mount induction cooktop. The hide-a-leaf dinette is a comfortable place to enjoy meals and play card games.

Each one of these Newmar Supreme Aire Super C diesel motorhomes are built with an industry-exclusive full-paint Masterpiece Finish exterior! They are powered by a hefty 525HP 12.8L Detroit DD13 diesel engine with a 1850 lb./ft. of torque and held together by a Freightliner Cascadia 116 chassis. A 8 kW Cummins diesel generator powers the units and the Nav-N-Go navigation system that comes with the 12.3" Xite dash monitor system will keep you right on track, and the Detroit Assurance Safety System will make the drive that much easier. This system includes object detection, intelligent high beams, pedestrian detection, and more safety features for your peace of mind. The full air-ride cab is exclusive to the Newmar Super C motorhomes and the plushier air-ride captain's chairs with 12V lumbar control welcomes you with comfort. Every model comes with stylish appointments and many conveniences, come find the perfect one for you today!

We work hard not to be undersold

Features

Standard Features (2026)

Exterior

Exterior Full-Paint Masterpiece Finish™ with Clearcoat
Painted Power Baggage Door Locks, Keyless Entrance Door with Touchpad & Door Bell
Entrance Door Assist Handle
Entrance Door Automatic Step
Convex Exterior Mirrors with Defrost & Remote Control
Front Cap Beta Fusion Protection
Hydraulic Leveling Jacks
Mud Flaps
Power Lock On Cockpit Doors
Rear Cap Storage
Stainless Steel Exterior Trim Pieces On Rear Cap
Tow Guard Rear Protective with Stainless Newmar Name Cutout
Undercoating

Optional

Black Aluminum Powder Coat Trim Kit For Exterior Compartment Doors, Onyx Package
Flag Pole Bracket
Stainless Steel Trim Kit For Exterior Compartment Doors
Blanco Full-Painted Exterior Graphics
Crestone Full Painted Exterior Graphics
Palisade Full Painted Exterior Graphics
Redcloud Full Painted Exterior Graphics
Shavano Full Painted Exterior Graphics
Special Order Exterior Colors
Artisan Series Custom Paint Process

Construction

16" On-Center Aluminum Frame Sidewalls & Roof Construction
Egress Door with Ladder System* (Floor Plan Specific)
Fiberglass Roof and Integrated Gutter Rail
Foam Insulation 5/8" Laminated in Sidewalls & Ceiling
Gelcoated Fiberglass Exterior Sidewalls, Front & Rear Caps
Polar Pak R19 Batten Insulation in Roof
Slideout Automatic Lock Arms On Non Hydraulic - Paddle Style
HWH Flat Floor Slideout

Chassis

Anti-Lock Braking System
Back-Up Alarm
Battery Disconnect For Chassis Battery
Cruise Control
D.A.S.S - Auto On/Off Headlights, Intelligent High Beams, Auto Rain Sense Wipers
D.A.S.S - Object Detection, Active Brake Assist, Pedestrian Detection, Adaptive Cruise Control
Detroit Assurance Lane Departure Warning System
Electronic Stability Control
120 Gallon Fuel Capacity
20K Rear Hitch For Towing with 2" Reducer and Drawbar with 2" and 2-5/16" Ball
30K Rear Hitch For Towing Includes Draw Bar with 2-5/16" Ball
Remote Keyless Entry System For Cab Doors
Freightliner®, Cascadia 525 HP, Single Axle, 38' and 41' Supreme Aire
Freightliner®, Cascadia 600 HP, Tandem Axle, 43' and 45' Supreme Aire
Aluminum Wheels

Optional

Freightliner®, Cascadia 525 HP, Single Axle, 38' and 41' Supreme Aire, Onyx Package
Freightliner®, Cascadia 600 HP, Tandem Axle, 43' and 45' Supreme Aire, Onyx Package

Windows, Awnings & Vents

Bunk Windows (Floor Plan 4540)
Fan-Tastic® Vent with Rain Sensor in Kitchen & Bathroom
Girard® G2000 Power Side Awning with Wind Sensor, Remote Control & LED Lights
Sky Window in Cockpit with Power Shade
Skylight Above Shower
Slideout Covers
Power Windows For Driver & Passenger
Frameless Double-Pane Tinted Safety-Glass Windows

Optional

Carefree® Window Awning Package of Three, One-Bedroom, One-Off Door Side Living Room, One-Door Side Living Room
Charcoal Tweed Awning - Must Be Ordered with Option B005 Special Order Exterior Graphics
Girard® Nova Two Side Awnings
Hogan Sparrow Awning - Must Be Ordered with Option B005 Special Order Exterior Graphics
Kitchen Window* (See Floor Plan for Availability)

Air Conditioning & Heating

Two 15K BTU Air Heat Pump Conditioners with Remote Control Thermostat (38' & 41' Floor Plans)
Three 15K BTU Air Heat Pump Conditioners with Remote Control Thermostat (43' & 45' Floor Plans)
Air Conditioning Drainage System For Roof
Chinook Dual Loop Heat with Continuous Hot Water
Dash Heater & Air Conditioner
Wall Mounted Sensors For Heating & Air Conditioning

Optional

Electric Radiant Heat Installed Below Floor Tile
Electric Radiant Heat Installed Below Main Floor Tile

Electrical

Automatic Generator Start On Low Battery Or Temperature Setting
Battery Disconnect Switch For House Battery
Cable TV Connection
50 Amp Electrical Service with Flexible Cord and Automatic Transfer Switch
Energy Management System
Engine Block Heater
Exterior Security Light, One Installed on Door Side
Eight 6V AGM House Batteries
Interior Courtesy Lights
3000W Pure Sine Inverter
LED Lights in Exterior Storage Compartments on Automatic Switches
Recessed LED Lights in Ceiling & Underneath Overhead Cabinets
Midship Side Turn Signals
Multiplex Lighting Control System
10.1" Multiplex Monitor System in Center of Coach with Interior Lighting & HVAC Controls
Newmar App
12.5 kW Cummins Onan® Diesel Generator (43' & 45' Floor Plans)
8.0 kW Cummins Onan® Diesel Quiet Series Generator (38' & 41' Floor Plans)
Power Rewind Reel with 33' Cord (Floor Plan Specific)
Power Rewind Reel with 50' Cord (Floor Plan Specific)
Reading Lights at Head of Bed - Dimmable with Adjustable Aim
110V Recept in Bed Overhead with Two Pass Through Ports
110V/USB Recept at Head of Each Bunk Area (Floor Plan 4540)
Slideout Switch Manually Operated Hold To Run
10W Solar Panel to Charge Chassis Battery
Solar Prep with 6 Gauge Wire Ran From Roof to House Battery Compartment (N/A with L020 Option)
Spare Fuses in Chassis Fuse Panel
Spare Fuses in House Fuse Panel
Transfer Switch with Surge Protector
USB Outlet at Dash For Driver Use
USB Outlet at Dinette & Bedroom Night Stand

Optional

50 Amp/120/240V Cord Connection For Stacker Trailer
Exterior Security Lights, Two Door Side, Two Off Door Side, One Rear
640 AHR Lithium Ion Battery System with Two 3000W Pure Sine Inverters
960 AHR Lithium Ion Battery System with Two 3000W Pure Sine Inverters
Four 120W Flexible Solar Panels on Roof

Plumbing & Bath

Aqua Miser® Shower System
Auto Fill For Fresh Water Tank
Demand Water System
Exterior Shower Located On Off Door Side
150 Gallon Fresh Water Tank
Power Reel For Water Hose
Sewage Holding Tank Rinse
Solid-Surface Shower Walls with Glass Door
Dometic® 321 China Bowl or Macerator China Bowl Stool (Varies Per Floor Plan)
Water Filter for Entire Unit

Optional

Fold-Down Shower Seat
Hot Water Line Run To Front Door Side Storage Bay

Cabinets & Furniture

Sable Maple Hardwood Cabinets - Suede Finish
Concealed Cabinet Door Hinges
Extended Rotation Concealed Cabinet Door Hinges For Washer and Dryer
Soft-Close Cabinet Drawers
Cabinet Drawers with Dove Tail Sides with Self Closing Full Extension Ball Bearing Guides
Mesh Cell Phone Holder at Each Bunk Bed (Floor Plan 4540)
Flush Cooktop Cover, Matching Countertop Material
Super Polished Solid-Surface Countertop in Bathroom and Bedroom
Super Polished Solid-Surface Countertop in Kitchen, Undermount Sink & Sink Covers
Williamsburg Convertible Booth Dinette (Floor Plan Specific)
Drawers Underneath Dinette Booth Seats
Driver & Passenger Seat Covers To Match Interior Decor
Driver & Passenger Seats Air Ride with Pneumatic Lumbar & Swivel
Lifts On Bed Top
Plush Pillow Top Mattress
Molded Silverware Divider Tray
Push-to-Release Pantry Drawer Slides
Pullout Pantry Shelves (See Floor Plans for Availability)
Ultrafabric Sofa and Front Seats
Villa Furniture

Optional

Chestnut Glazed Maple Hardwood Cabinets - High Gloss Finish
Chestnut Glazed Maple Hardwood Cabinets - Suede Finish
Morel Glazed Maple Hardwood Cabinets - High Gloss Finish
Morel Glazed Maple Hardwood Cabinets - Suede Finish
Sable Maple Hardwood Cabinets - High Gloss Finish
Sedona Glazed Maple Hardwood Cabinets - High Gloss Finish
Sedona Glazed Maple Hardwood Cabinets - Suede Finish
Summit Maple Hardwood Cabinets - High Gloss Finish
Summit Maple Hardwood Cabinets - Suede Finish
Two-Tone Summit/Chestnut Glazed Maple Hardwood Cabinets - High Gloss Finish
Two-Tone Summit/Chestnut Glazed Maple Hardwood Cabinets - Suede Finish
Two-Tone Summit/Morel Glazed Maple Hardwood Cabinets - High Gloss Finish
Two-Tone Summit/Morel Glazed Maple Hardwood Cabinets - Suede Finish
Two-Tone Summit/Sable Maple Hardwood Cabinets - High Gloss Finish
Two-Tone Summit/Sable Maple Hardwood Cabinets - Suede Finish
Two-Tone Summit/Sedona Glazed Maple Hardwood Cabinets - High Gloss Finish
Two-Tone Summit/Sedona Glazed Maple Hardwood Cabinets - Suede Finish
Bunk Beds To Convert To Wardrobe (Floor Plan 4540)
Convertible Dinette with Two Fixed & Two Folding Chairs That Face To Window Or Fore/Aft Seating
Euro Booth Dinette with Two Table Leaves and Two Folding Chairs
48" Love Seat Sofa with TV Lift (Floor Plan 4129)
84" Theater Seating (Powered) with Reading Lights (Floor Plan 4540)
87" Theater Seating (Powered) with Reading Lights, 58" Trifold Sofa (Floor Plan 4505)
74" Theatre Seating (Powered), 35" Booth Dinette (Floor Plan 3827)
74" Theatre Seating (Powered), 35" Euro Dinette (Floor Plan 3827)
74" Theatre Seating (Powered) with Reading Lights & Lighted Cup Holders (Floor Plans 4129 & 4341)
Cab Over Bunk with Skylight (3827, 4129, 4341 and 4505 Floor Plans)

Appliances

Air Horns
All-Electric Flush Mount Induction Cooktop
110V Heat Pads For Holding Tanks
30" Stainless Steel Microwave Convection with Air Fryer Feature
19.7 Cu. Ft. Whirlpool® Refrigerator
Washer and Dryer Prep

Optional

Central Vacuum with Tool Kit
Dishwasher in A Drawer with Stainless Steel Front Located Below Cooktop
Fireplace in Living Area (Floor Plan 4129)
Freezer Electrical Prep (110V and 12V) Without Tray
Freezer On Pull-Out Tray in Exterior Compartment
Stacked Two-Piece Splendide® Washer and Dryer

Interior

Fitted Non-Quilted Bedspread & Accent Pillows
Decorative Wall Art
Designer Feature Ceiling
Interior Passage Inlayed Three Panel Design Doors
Interior Assist Handle at Main Entry Door
MCD Window Shades
Power Stepwell Cover
Tile Floor in Kitchen, Bathroom, Bedroom & Living Areas
Wastebasket in Kitchen Base Under Sink
Integrated Window Blind System On Entry Door

Optional

Brighton Interior Decor
Saguaro Interior Decor
Palisades Interior Decor
Auto Motion Power Window Shades
Safe Located in Wardrobe

Audio, Video & Accessories

Cat6 TV Cables
CB Prep with Antenna
Digital Dash Displays with 12" A-Panel Cluster & 10" B-Panel Infotainment with Xite Cam Monitor & Apple CarPlay®
Exterior Entertainment Center with 43" Samsung® 4K LED TV & Soundbar
10 BC Fire Extinguisher, Carbon Monoxide, Smoke Detectors
High Definition Component Wiring
Rear View Color Monitor System with Audio
Satellite Dish Prep On Roof
Bose® Sound System Soundbar
TV Jack and 110V Recept in Door Side Exterior Storage Compartment
50" Samsung® 4K LED TV on Televator in Living Area
Samsung® 4K LED TVs in Living & Bedroom Areas (TV Sizes Vary Per Floor Plan)
Winegard® Rayzar Automatic Digital TV Antenna
Xite HD 360 Camera System with Grid Lines and Tri-View Rear Camera

Optional

Two Camera Rear Prep For Use with Stacker Trailer
SiriusXM® Radio Capability with Antenna (Does Not Include Monthly Subscription)
Satellite Prep Ground Tripod Dish On Off Door Side with A/B Switch
Starlink Internet System
Two 19" Skyworth TV/DVD Monitors - One at Each Standard Bunk (Floor Plan 4540)
Universal Remote Control
Universal Toll Module
WiFiRanger Denali/Spruce LTE
WiFiRanger Everest with Aspen Interior Router
Winegard® Automatic Open Face SWM Satellite Dish - For DIRECTV® Standard/HD & In Motion DIRECTV® Standard with Auto Stow & Dash Indicator
Winegard® Automatic Open Face Satellite Dish & Winegard® In Motion - for DISH® with Auto Stow & Dash Indicator
Winegard® Automatic Open Face Satellite Dish - For DISH® HD & Bell HD TV SK2-100 with Auto Stow & Dash Indicator
Winegard® Automatic Open Face SWM Satellite Dish - For DIRECTV® Standard/HD SK2-300 with Auto Stow & Dash Indicator
Winegard® In Motion Dome Satellite Dish - For DISH® Standard/HD, DIRECTV® Standard & Bell Canada (RTL-20B)

Please 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.

Favorite RVs

Save your favorite RVs as you browse. Begin with this one!

Highly recommend McKee RV.
The best RV buying experience ever. We have purchased 7 RV's, from a Travel Trailer to a Class A and this was by far the best experience ever. Jim, Jamie and John treated us like family, no phony sales pitch, no hidden agenda just honest, genuine people. The Sales Manager was also outstanding and again, ... More »

GerriLynn
We had a great experience with McKee RV.
We had a great experience with McKee RV. We purchased a 2021 Forest River Sabre. We found it online and the price was a great deal. We made the 4 hour drive and the camper was exactly what it looked like in the pictures. The unit was clean and they made sure we were well taken care of. Everyone ... More »

Kellie
Highly recommended
This team made buying a new RV quick and easy! I worked with Randy and and other members of the team and they went out of their way to make things happen. They are very customer oriented and made sure everything was perfect with our new purchase before leaving. Highly recommended!

Bobbie

We are here to help, call us at
515-304-3673 or Contact Us

We are here to help!

515-304-3673
Contact Us
Click For Lowest Price

McKee RV Advertised pricing reflects all applicable manufacturer rebates and dealer finance discounts. Advertised prices do not include taxes, title, license fees, or dealer fees. Manufacturer images, specifications, and features may be used in place of actual units in stock. Please contact us @515-304-3673 for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.

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.

New 2026 Newmar Supreme Aire 4129

Tell us about the RV you currently own

Your Contact Information

Tell us about the RV you currently own

Your Contact Information

New 2026 Newmar Supreme Aire 4129

4129 Floorplan

Specifications

Description

Features

Tell us about the RV you currently own

Your Contact Information

Tell us about the RV you currently own

Your Contact Information