2006 Newmar Mountain Aire 4309
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Smart Money Highlights
A 42′ 6″ 2006 Newmar Mountain Aire 4309 diesel pusher with four slide-outs on a Spartan tag-axle chassis, with a 400 hp Cummins ISL, 61,765 miles, and 10,000 lbs of towing capacity.
Chassis Power
400 HP | Cummins ISL Diesel
61,765 Miles | Diesel | 10,000 lbs Towing
Unit Specifications
Class A Diesel Pusher | 42′ 6″
Spartan Tag-Axle Chassis | 50 Amp
Mountain Aire 4309 Floorplan
Power On Your Terms
7,500W Diesel Generator + 2,000W Inverter
Automatic Generator Start | 4 Coach Batteries
Electric Fireplace
Built into the entertainment center beneath the living-area TV, across from the dinette.
Auto Hydraulic Leveling
Four-point hydraulic jacks with automatic control and air dump for quick, level setup.
Hydronic Heat + Hot Water
Hydronic heating system that also supplies continuous hot water.
“This 2006 Newmar Mountain Aire 4309 is a 42′ 6″ Class A diesel pusher with four slide-outs, built on a Spartan tag-axle chassis with independent front suspension, powered by a 400 hp Cummins ISL and an Allison transmission, with 61,765 miles on the odometer. The certification tag rates it at 44,200 lbs GVWR and 54,200 lbs GCWR, leaving 10,000 lbs of towing capacity for a toad or trailer. Inside, the 4309 floorplan pairs an 84″ sofa and a Corian galley on one side with a dinette and an electric fireplace entertainment center on the other, plus two pantries and a china hutch. The rear private bedroom has a king bed and is served by a 38″ x 38″ shower, a separate toilet room, and a washer/dryer combo. Four-point hydraulic auto-leveling, two ducted air conditioners, hydronic heat with continuous hot water, and a 7,500-watt diesel generator with automatic start round out a coach set up for long stays.”
Feature Explorer
Filter specifications to find what matters to you.
🍳 Kitchen
- • Polished Corian countertops with undermounted sink and flush sink covers
- • Three-burner recessed cooktop with Corian range cover
- • 30″ convection microwave oven
- • Refrigerator with icemaker and in-door ice/water dispenser
- • Two pantries plus china hutch
- • Filtered drinking-water dispenser at kitchen sink
- • Fan-Tastic vent fan
📺 Entertainment
- • Three flat-screen TVs
- • Electric fireplace below living-area TV
- • Theater seating
- • Sony surround sound system
- • Satellite prep with phone and TV jacks
- • Pleated day/night shades
- • Recessed ceiling mood lighting
🛌 Sleeping
- • Rear private bedroom with king bed (72″ x 80″ per factory floorplan)
- • 84″ living-area sofa converts to a bed
- • Bed lifts for under-bed storage
- • Wardrobe with sliding mirror doors
- • Chest of drawers and bedroom overhead storage
- • 38″ x 38″ shower and separate toilet room
🌳 Outdoor Living
- • Power patio awning, encased (21′ per factory specs)
- • Power entry-door awning and two window awnings
- • Exterior TV with outside TV, cable, and satellite hookups
- • Outside refrigerator
- • Exterior wash station (hot/cold water) and automatic rewind water-hose reel
- • Lighted pass-through basement storage
⚙️ Cockpit & Mechanical
- • Cummins ISL 400 hp diesel with Allison MD3000MH transmission
- • Spartan chassis with independent front suspension and tag axle
- • Two-stage engine compression brake
- • Four-point hydraulic auto-leveling with air dump
- • Power driver and passenger seats, both swivel
- • Tilt-and-telescope steering and adjustable pedals
- • Backup camera: installed. Side cameras: installed
🏗️ Build Quality
- • Full-body paint with Diamond Shield front protective film
- • Fiberglass sidewalls with fiberglass front and rear caps
- • One-piece molded fiberglass roof
- • Aluminum-framed walls, 16″ on-center framing
- • Tinted windows and enclosed underbelly
- • Ceramic tile flooring in kitchen, bath and entry
- • Four slide-outs with slide toppers and power lock arms
💧 Systems
- • Two ducted roof air conditioners
- • Hydronic heating system with continuous hot water
- • 7,500-watt diesel generator on pullout tray with automatic start
- • 2,000W inverter and four coach batteries
- • 50 amp service with power-cord reel
- • Washer/dryer combo: installed
- • Whole-unit water filter
⭐ Notable Equipment
- • Electric fireplace (factory option)
- • Hydronic heating and continuous hot water (factory option)
- • Washer/dryer combo
- • Exterior TV and outside refrigerator
- • Aluminum wheels
- • Light maple raised-panel cathedral cabinetry
Capacities & Dimensions
Tire Information
The tire date code recorded at intake is 3822, which means manufacture in the 38th week of 2022, roughly four years old at the time of listing. The federal certification tag calls for 305/70R22.5 tires. As general guidance, RV tires are typically replaced at around six years of age regardless of tread depth, and can reasonably be run as long as ten years provided they are inspected annually by a professional tire company after the six-year mark. This motorhome does not carry a spare tire. We encourage buyers to review the DOT code on each tire with us during inspection.