2025 Cornerstone

Live out your dreams in ultimate luxury in the Cornerstone, Entegra Coach's flagship diesel pusher and the #1 selling coach in the 605HP engine category. Built utilizing unique construction techniques and offering numerous ride and handling upgrades, the Cornerstone is truly the quietest riding, best-handling coach on the market today—period. Premium interior features and materials take this powerful motorhome to the next level. The Cornerstone is the epitome of power meets luxury.

The Cornerstone is built upon the Spartan K3 chassis. It features a Cummins 605HP engine, side-mounted radiator, custom-tuned Koni shocks and the Valid™ Truline air leveling system for a powerful and smooth ride you won't find anywhere else. 
Inside the cockpit, our cab-forward design features a 120-inch... Read More

2025 Cornerstone

Product Videos

Floorplans

2025 Cornerstone|45B

45B

2025 Cornerstone|45D

45D

360   View specs

2025 Cornerstone|45R

45R

360   View specs

2025 Cornerstone|45V|NEW

45V

360   View specs

2025 Cornerstone|45W

45W

360   View specs

2025 Cornerstone|45Z

45Z

360   View specs

Ward = wardrobe

Lav = bathroom sink

Med = medicine cabinet

Ohc = overhead cabinets

Fridge = refrigerator

Micro = microwave

Exterior Graphics

Standards & Options

Chassis

Chassis Spartan® K3 raised-rail chassis
Engine Cummins® 15 liter X15 turbocharged 605 HP engine with 1,950 lb. ft. torque at 1,150 RPM
Transmission Allison® 4,000 MH 6-speed transmission
Radiator Side-mounted, parallel-airflow radiator
Alternator 210 amp alternator
Engine Block Heater 1,500W engine block heater
Engine Brake Three-stage engine brake
Front Axle Meritor® front axle with independent front suspension, integrated anti-sway bar and custom-tuned Koni® shocks- 20,000 lb. rating
Rear Axle Dana® rear axle - 20,000 lb. rating
Tag Axle Reyco® Granning® passive-steer tag axle with onee-touch manual air dump - 14,000 lb. rating
Braking System All-wheel ABS disc brakes
Rear Axle Ratio 4.30 rear axle ratio
Tires Michelin® 365/70R 22.5 in. tires (front) and 315/80R 22.5 in. tires (rear)
Tire Pressure Monitoring Tire pressure monitoring system (TPMS) with temperature monitoring
Traction Control Automatic traction control
Leveling System Equalizer™ hydraulic automatic coach leveling
Air Leveling Valid™ Truline air leveling system with auxiliary air compressor
Air Connection Remote air connection
Chassis Battery (2) 12V chassis batteries
Fuel Tank 175 gal. fuel tank with dual fills
DEF Tank 15 gal. DEF tank with dual fills
Tow Air Brake System Spartan® Safehaul tow vehicle air brake system
Hitch 20,000 lb. hitch with 7-pin plug

Construction

Roof 4 in. arched aluminum trusses filled with batt insulation and reflective Flexfoil® topped with 3/8 in. plywood decking then one-piece fiberglass
Walls 2-1/2 in. exterior walls with Aluma-Tru™ welded tubular aluminum studs on 16 in. centers or less, filled with batt and Flexfoil® insulation, then covered with high-gloss gelcoat fiberglass (R-16)
Floor 2 in. x 4 in. wood trusses on 16 in. centers or less filled with batt and Flexfoil® insulation then topped with 3/4 in. 7-ply plywood decking (R-33)
Frame X-Bridge™ bracing welded into chassis frame
Slideouts Entegra-exclusive Relia-Torque flush-mounted 12V slideout system

Heat, AC, Water & Power

Heated Tanks Aqua-Hot® heated basement storage
Generator Onan® 12,500W diesel generator, with automatic start, on powered slide-out tray
Batteries (4) L16 AGM batteries (6V/390 amp hrs. ea.)
Solar (2) 200W solar panels
Electrical Hookup 50 amp power cord on electric powered reel
Transfer Switch Smart automatic transfer switch with surge protection
Air Conditioning (3) 15,000 BTU A/C units with heat pumps and condensation drain system
Heating System Aqua-Hot® 600D hydronic water and heating system with in-floor heat throughout and engine preheat
Black Tank Management Sani-Con® macerator holding tank dump system with power gate valves and manual backup
Tank Flush Black tank flush; Grey tank flush
Tank Assist Tilt tank dump
Water Filtration City and tank water filtration system
Water Hook-Up Hot and cold water hook-up in front cap area with 30 ft. quick-disconnect hose
Water Hose w/ Electric Reel Water hose with electric reel
Inverter Victron 3,000W pure sine wave inverter with LED screen
Water Softner Water softener prep in driver-side compartment

Exterior

Front/Rear Cap Insulated front and rear caps (R-24)
Utility Center Heated exterior utility center with 5 in. LED Firefly® tank monitoring panel
Stainless Steel Accents Executive Bus Armor 10 in stainless steel trim
Engine Door Power rear engine door with manual override
Patio Awnings Dual roof-mounted Girard® Vision dual-pitched patio awnings with LED lights
Door Awning Girard® power entrance door awning with LED lights
Slideout Awnings Girard® Ultra slideout awnings
Window Awnings Girard® Ultra power window awnings
Windows Frameless, dual-pane, tinted, safety-glass windows
Keypad Lit grab handle with doorbell and keypad system for keyless entry
Entertainment 43 in. Samsung® QLED 4K UHD Smart TV with tilt, swivel, and extend adjustment; JBL® radio and speakers with USB port and receptacle
Mirrors Blind-spot monitoring indicators in chrome, heated, remote-control side-view mirrors
Exterior Diamond Shield™ front protective film mask
Headlights Automatic LED high and low beam headlights
Fog Lights Halogen fog lights
Daytime Running Lights Automatic daytime running lights
LED Lights LED marker lights, turn lights, license plate light, third brake light, accent lights and docking lights
Accent Lights LED accent lights under all slideout rooms
Lights Porch light and motion sensor security lights
Rear Mudflap Mudflap with chrome “Entegra Coach” nameplate
Satellite Internet Starlink satellite internet system
Satellite Dish - US Winegard® TRAV’LER satellite dish DIRECTV® - standard with USA option
Satellite Dish - CA Winegard® TRAV’LER Pro satellite dish Shaw TV - standard with CSA option
Antenna Winegard® Rayzar Automatic powered TV antenna
Wi-Fi Winegard® WiFiRanger™ Wi-Fi extender
Cargo Features (2) power slideout basement storage trays
Freezer 2.8 cu. ft. exterior refrigerator/freezer on slideout tray
Baggage Doors Push-button, power-unlatching baggage doors with LED indicator light
Exterior Walls Sikkens custom full-body paint
Chrome Accents LED-lit chrome clearance accent light
Entrance Door Removable screen on entry door

Cockpit

Dash Valid™ 15 in. digital dash with quad core graphics processor, on-board diagnostics and ability to display traditional instrument cluster, 360° camera system or GPS navigation
Cameras Delta Mobile Systems® aiDARS™ 1X active 360° surround view system with 14 smart radar sensors and 6 HD cameras displayed on digital dash screen
Infotainment System(s) Valid™ infotainment system with 15 in. touchscreen, Sygic navigation, Bluetooth®, Sirius XM™ and AM/FM tuner, integrated camera control, house mode whole-coach audio distribution and integrated VegaTouch coach control
Side Consoles 4.3 in. infotainment control touchscreen in passenger console
Driving Features E-Z Steer™ adjustable power steering assist
Steering Wheel Leather steering wheel with integrated controls for screen selection, instrument cluster navigation, media source selection, cruise, wipers and Bluetooth® phone functionality
Steering Column Power tilt and telescoping steering column
Sound System JBL® premium audio 11-speaker sound system with amplifier, speakers and DVC subwoofer
Antenna All-in-one automotive antenna for AM/FM/Sirius/GPS dash radio system
Windshield Ultra-Vision® one-piece wrap-around tinted windshield; Rain-sensing windshield wipers
Driver / Passenger Seats Heated and cooled leather driver and passenger seats with powered 6-way adjustment, lumbar, recline, footrest and massage functions
Power Features Powered driver's window; Powered flush stepwell cover
Pedals Powered adjustable brake and accelerator pedals
Visors & Privacy Shade Powered front sun visors and privacy shades
Collision Mitigation Collision avoidance system with collision warning, adaptive cruise control and electronic stability control
Additional Amenities Bergstrom dual-zone HVAC system; Dual USB port and one 12V socket for charging

Interior

Electric Fireplace LED-lit fireplace with 5,000 BTU heating element (45B, 45Z)
Television - Front Overhead 32 in. Samsung® QLED 4K UHD Smart TV in front overhead
Command Center Firefly multiplex system with 10 in. VegaTouch touchscreen for complete integration of coach controls, with remote monitoring and control (mobile app available)
Switches Spyder 3.5 in. touchscreen switches throughout
Television - Living Room 50 in. Samsung® QLED 4K UHD Smart TV
Sound - Living Room Bose® sound bar with subwoofer and universal remote control
DVD Systems Sony® Blu-ray™ player
Furniture Premium leather Crown Compass furniture
Flooring Hand-laid porcelain tiled floors
Lighting LED interior lighting
Ceiling Decorative ceiling feature with integrated accent lighting
Window Treatments Powered solar day and blackout night shades
Central Vacuuming System Portable Shark® vacuum cleaner
Interior Doors Aire-Secure™ travel locks for all pocket doors
Bar Bar area with beverage chiller and rain glass upper cabinet door with LED accent lighting (45R only)
Bunks Bunks with industry-exclusive 300 lb. capacity each (45R)
Washer/Dryer Splendide stackable washer and dryer

Kitchen

Window Window with push out lever operation and screen
Refrigerator Stainless steel residential refrigerator
Cooktop Induction cooktop with matching wood cover
Microwave 1.9 cu. ft. convection microwave oven
Dishwasher Fisher & Paykel dishwasher
Countertops Solid-surface countertops and dimmable LED accent lighting
Water Dispenser Filtered water dispenser at kitchen sink
Vent Maxxair® power vent exhaust fan with intake and touch screen control
Waste Basket Large, deep drawer for waste basket with easy access trash chute (trash chute not available in 45D, 45R)
Storage Pantry with pull-out shelves; Slide-out storage tray(s) in overhead cabinet
Sink Blanco single-bowl granite sink

Bedroom

Bed Personal Comfort® A5 king-size mattress
Television 32 in. Samsung® LED 4K UHD Smart TV
Sound Bose® sound bar with universal remote control
DVD Systems Sony® Blu-ray™ player
Ceiling Fan Ceiling fan
Nightstands Nightstands with solid-surface tops
Wardrobe Automatic light in rear closet

Bathroom

Countertop(s) Solid-surface countertops with integrated glass sink and dimmable LED accent lighting
Shower Porcelain tile shower walls and floor with skylight and frameless glass shower door
Shower Seat Teakwood shower seat
Shower Head Pivoting shower head and separate hand-held spray wand
Water Saving System Aqua View SHOWERMI$ER™ water saving system
Toilet Thetford® macerator toilet in main bath; Thetford® macerator toilet in mid bath (45D, 45R, 45W); Thetford® toilet in mid bath (45B)
Vent Maxxair® Deluxe power exhaust vent fan with intake

Safety

Carbon Monoxide Detector Carbon monoxide detector
Smoke Alarm Smoke alarm
Security Safe Storage safe

Options

Theater Seating Theater seating with power recliners and fixed center console (45R)
Hide-a-Bed Sofa 100 in. hide-a-bed sofa ILO 100" power reclining 3-cushion sofa (45B, 45V, 45Z )
Dinette Dinette booth ILO free-standing table and chairs (45B, 45D, 45W, 45Z)
Fireplace/TV/entertainment center and work station ILO sofa Fireplace/TV/entertainment center and work station IPO sofa (45D, 45W)
Mattress Sleepmade memory foam mattress
Satellite Dish Winegard® in-motion satellite dome ILO Winegard® TRAV’LER
Satellite Dish - US Winegard® TRAV’LER satellite dish Dish Network® ILO DIRECTV®
Chassis Freightliner SL chassis ILO Spartan K3 chassis
Dishwasher Drawer Cabinet with two drawers ILO dishwasher
Area Rug Living Room and Bathroom Area Rugs
Headboard Wood headboard
Canadian Standards Canadian standards (CSA)
Hide-a-Bed Sofa 2 Hide-a-bed sofa and standard sofa ILO power theater seating and hide-a-bed sofa (45D, 45W)
Satellite Internet
Navigation Garmin 10" RV Navigator GPS system
Exterior Color Blackout Package (wheels, lights, mirrors, trim, badging)
Media Center ILO Sofa Media Center ILO Sofa (45V)

Décor Options

Wood Options

Tile Options

The Entegra Coach Advantage

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Entegra Coach peace of mind

Entegra Coach peace of mind

2-year warranty and 5-year structural warranty

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 limited warranty and a 5-year structural limited warranty.

 

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