2015 Cornerstone

In a class of its own

You'll rule the road thanks to the 2015 Cornerstone's Cummins ISX 600 HP turbocharged engine. And with Cornerstone's well-appointed interiors, you'll rule it like a king: Enjoy quartz countertops, heated porcelain bathroom flooring, a cedar-lined walk-in wardrobe and gourmet kitchen. 

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Ward = wardrobe

Lav = bathroom sink

Med = medicine cabinet

Ohc = overhead cabinets

Fridge = refrigerator

Micro = microwave

Exterior Graphics

Standards & Options


Chassis Spartan K3 chassis
Chassis Battery 2
Hitch 20,000-lb. hitch with 7-pin plug
Engine Cummins 15 liter ISX turbocharged 600 HP engine 1,950 lb-ft torque at 1,200 RPM
Engine Block Heater Yes
Fuel Tank 150-gal. fuel tank (dual fill)
DEF Tank 15-gallon DEF tank
Transmission Allison 4000 MH 6-speed transmission
Alternator 210-amp alternator
Radiator Side-mounted radiator
Front Axle Reyco Granning front axle 20,000-lb. wide track
Rear Axle Ratio 4.30 "Quiet-Gear" rear axle ratio
Tag Axle Tag axle auto weight release
Turning Radius 55-degree wheel cut
Braking System Air Disc brakes on front and rear; All-wheel ABS brakes; Three-stage Jake brake; Pre-wired for electric brake controller
Tires Michelin 365/70R 22.5" tires (Front) + 315/80R 22.5" tires (Rear)
Traction Control Automatic Traction Control
Shocks Front/Rear; 60 mm heavy duty
Front Suspension Reyco Granning IFS independent front air suspension
Rear Suspension Ridewell 246 rear air suspension
Air Connection Remote air connection
Rear Axle Rear axle 20,000-lb., tag axle 14,000-lb.


Frame X-Bridge frames welded into chassis frame; Steel-reinforced front cap and windshield frame
Underbelly Enclosed, insulated and heated floor, and thermostat controlled heating in storage area
Floor 2" x 4" floor truss construction; 3/4" (7) ply plywood main floor decking
Walls Aluma-Tru Superstructure construction on 16" centers; 2-1/2" wall with welded tubular construction; Sidewalls bolted to chassis frame structure; Smooth high-gloss, gel-coat fiberglass exterior walls
Insulation Polar Pack insulation with reflective Flexfoil floor (R-33), roof (R-24), sidewalls (R-16), front and end caps (R-22)
Slideouts Frameless, flush-mounted slideout rooms; Electric-powered slideouts
Roof One-piece, gel-coat fiberglass, 4-1/2" arched aluminum truss roof; Fully decked with 3/8" plywood

Heat, AC, Water & Power

Water Monitoring Yes
Air Conditioning 15,000-BTU low profile central A/Cs (3) with heat pump, digital thermostat and drain tubes with ducted returns
Electrical Hookup 2,800-watt and 2,000-watt Pure Sine wave inverters with (8) 6V glass mat batteries; 50-amp electric service; 50-amp quick-connect power cord with power reel; Surge protector transfer switch; (2) glass mat batteries
Generator Onan 12,500-watt diesel generator with auto gen start and A/C shore sensor
Heating System Aqua-Hot 450 Diesel hydronic water and heating system with in-floor heat throughout
Batteries Holding and fresh water tanks, radiant-heated; Black holding tank sprayer
Power Management Hookup for city water; Power auto rewind water hose
Water Hose w/ Electric Reel 12V on-demand water pump with two switch locations
Black Holding Tank Sprayer Total coach dual system water filter
Black Tank Management SeeLeveL tank monitoring system; Systems monitor panel
Water Filtration Yes


Mirrors Chrome, heated, remote control, side-view mirrors
Exterior Full-body premium paint package; 3M front protective film mask
Entrance Door Aire-Secure travel locks for all passage doors; Lighted heavy-duty grab handle with keypad system; Power bay lock integrated with key fob and touch pad
Entrance Steps Electric-powered, double-step entrance
Windows Frameless, tinted, dual-pane, safety-glass windows
Door Awning Roof-integrated, 2-stage powered roof awning with LED lights; Carefree power entrance door awning with LED lights; Carefree slideout and window awnings
Cargo Features Pass-through storage compartments with powered slideout cargo trays (2); Side-hinged baggage doors with chrome door handles; Carpet trunk liner in cargo bays
Exterior Entertainment Samsung 40" LED HDTV with Sony Dual DIN CD/DVD player and dual speakers
Satellite Dish Winegard in-motion, dome, roof-mounted satellite dish
Rear Mudflap Full-width rear mudflap
TV Antenna Yes


Driver / Passenger Seats 8-way power, lumbar, heated, leather driver and passenger seats with integrated 3-point lap and shoulder safety belts; Passenger seat power footrest
Steering Wheel VIP SmartWheel steering wheel (wood-grain, leather-wrapped) with tilt and telescoping steering column and integrated controls for radio, cruise and wipers; Adjustable foot pedals
Infotainment System(s) Touch-screen AM/FM/CD/DVD with Rand McNally GPS navigation, Bluetooth and (4) speakers; Sirius radio and tuner; CB prep with antenna; JBL Premium sound dash speakers; Samsung 32" LED HDTV
Windshield Ultra-Vision one-piece wrap-around tinted windshield
Cameras Color back-up camera and monitor. Side cameras with turn signals
Visors & Privacy Shade Powered front and roller side sun visors and privacy shades
Power Features 12V auxiliary in-dash receptacle - (1) in center, (1) at driver's area, (1) at passenger's area; Battery boost switch; Chassis battery disconnect; Auxiliary start switch; Touch control for hydraulic leveling jack system; Powered flush stepwell cover
Monitoring System(s) Spartan Message Center with LCD display featuring: odometer, tachometer, instantaneous fuel economy, fuel remaining, outside air temp., coolant temp., engine oil temp. and pressure, transmission temp., turbo boost pressure, air pressure, diagnostic functions, fault codes, service reminders, percentage of engine load, trip meter, speed and voltage
Flooring High gloss 12" x 24" porcelain tile with granite inlay design; Color-coordinated carpeted floormats
Trip Management System Yes


Furniture Leather furniture package; Leather hide-a-bed sofa
Electric Fireplace Yes
Lighting Decorative oil rubbed bronze lighting throughout; LED recessed 12V lighting; Multiplex lighting; Lights at entrance steps
Central Vacuuming System 2-panel residential-style solid hardwood passage doors
Window Treatments Fabric and wood-covered box valances with lambrequin legs; Individually-operated, power day/night solar roller shades throughout
Flooring High gloss 12" x 24" porcelain tile floor
Washer/Dryer Yes


Refrigerator Samsung residential 23 cu. ft. refrigerator with ice maker and water dispenser
Microwave Samsung 1.7 cu. ft. convection microwave oven with carousel
Cooktop Flush-mounted, electric 2-burner induction cooktop
Dishwasher Dishwasher drawer
Kitchen Countertops Quartz surface countertops with integrated stainless steel sink
Kitchen Backsplash Porcelain tile backsplash with glass design inlays
Waste Basket Large deep drawer with waste basket
Silverware Drawer Silverware drawer, divided for utensils
Cabinet Extension Pullout cabinet extension with countertop
Cutting Board Yes


Bedroom Mattress / Bedding King Select Comfort Sleep Number air mattress; Quilted bedspread
Bedroom Wardrobe Large cedar-lined wardrobe with hardwood doors with mirrors


Bathroom Shower Caramel Glazed Maple
Bathroom Countertop(s) Quartz countertops with integrated sink
Bathroom Shower Door Porcelain tile shower pan and walls with skylight; Frameless, full-view, glass shower surround
Bathroom Ventilation Power vent with thermostat and rain cover


Smoke Alarm Yes
Carbon Monoxide Detector Yes
Security System Security system with glass shatter sensors
Lights 2 motion sensor security lights


Canadian Standards Yes
Satellite Dish - US Winegard Trav'ler satellite dish with DIRECTV; Shaw Direct Canada Satellite TV
Freezer Dual 100-watt

Décor Options

Entegra Coach peace of mind

2 years

2-year warranty and 3-year roadside assistance

At Entegra Coach, excellence doesn’t end with our stunning interiors and superior craftsmanship. We back each luxury coach with the industry’s highest level of service—including a 2-year warranty and 3-year roadside assistance.

2-year warranty details

3-year roadside assistance details


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