New 2026 Cornerstone Reserve 45D Motor Home Class A - Diesel
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Cornerstone Reserve 45D Description
Entegra Coach Cornerstone Reserve Class A diesel motorhome 45D highlights:
- Bath and a Half
- King Bed Slide
- Power Theater Seating
- Residential Refrigerator
- Girard Power Awnings
You're sure to make memories in this four slide out coach! Once you stop for the night, you can make dinner on the induction cooktop with a matching wood cover or in the Cafe convection microwave with an air fryer function. There is a table with two chairs where you can dine together, or maybe you just want to kick your feet up on the power theater seating, which is directly across from the 50" TV on lift. If you have guests staying over, they can sleep on the hide-a-bed sofa, and the mid-coach half bath is sure to come in handy at night. You'll find your own space in the master bedroom, complete with a king bed slide, dual wardrobes, and a 43" TV for a late-night movie in bed. The full rear bath includes a walk-in wardrobe with storage and a stackable washer and dryer plus dual bath sinks so you both can get ready for bed together!
Luxury abounds in the Cornerstone Reserve Class A diesel motorhome by Entegra Coach! Each journey is made smooth thanks to the custom-tuned Koni shocks and Valid Truline air leveling system, plus you'll be sitting comfortably on the heated and cooled leather captain's seats. There is also a collision avoidance system for added peace of mind, a Valid infotainment system, and a Delta Mobile System aiDARS 1X active 360° surround view camera system for maneuverability. The interior of the Cornerstone Reserve is outfitted with many luxurious features, such as premium quartz countertops, upgraded tile, upscale Café™ appliances, and custom Villa Italian leather furniture. The exterior is just as impressive with its Sikkens custom full-body paint with two color choices, push-button, power-unlatching baggage doors, exterior entertainment center, insulated front and rear caps, and the list goes on!
Cornerstone Reserve 45D Specifications
Sleeps | 4 |
Slides | 4 |
Length | 44 ft 11 in |
Ext Width | 8 ft 5 in |
Ext Height | 12 ft 8 in |
Int Height | 7 ft |
Interior Color | Luxe |
Exterior Color | Darknite Blue, Darknite Red |
Hitch Weight | 20000 lbs |
GVWR | 54000 lbs |
Fresh Water Capacity | 100 gals |
Grey Water Capacity | 62 gals |
Black Water Capacity | 41 gals |
Tire Size | 22.5" |
Furnace BTU | 96000 btu |
Generator | Onan 12,500 Watt Diesel |
Fuel Type | Diesel |
Engine | Cummins 15L X15 Turbocharged |
Chassis | Spartan K3 Raised Rail |
Horsepower | 605 hp |
Fuel Capacity | 175 gals |
Wheelbase | 320 in |
Available Beds | King |
Torque | 1950 ft-lb |
Refrigerator Type | Cafe Energy Star 4 Door |
Refrigerator Size | 22.3 cu ft |
Convection Cooking | Yes |
Cooktop Burners | 2 |
Shower Size | 33" x 41" |
Number of Awnings | 2 |
Axle Weight Front | 20000 lbs |
Axle Weight Rear | 20000 lbs |
Axle Weight Tag | 14000 lbs |
Water Heater Type | AquaHot 600D Hydronic |
AC BTU | 45000 btu |
TV Info | Samsung QLED 4K UHD Smart TV; Overhead 32", LR 50", Ext. 43". BR Samsung Crystal UHD Smart TV |
Awning Info | Roof-Mounted Girard Vision Dual Pitch with LED Lights |
Washer/Dryer Available | Yes |
Gross Combined Weight | 74000 lbs |
Shower Type | Shower w/Seat |
Electrical Service | 50 amp |
Cornerstone Reserve 45D Reviews
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ManuFacts

In the spring of 2008, Entegra Coach became a member of the Jayco family of companies. Ever since, we've taken great pride in the details—and each luxury motorhome we build embodies that principle.
We started building luxury motorcoaches one at a time—with a superior foundation, unrelenting attention to detail and old-world craftsmanship, unmatched engineering innovation, rock-solid construction and a ride that's as smooth and quiet as it is invigorating and well-appointed.
In 2018, our pursuit of the superior luxury motorhome expanded beyond diesel Class A coaches to gas Class As and Class Cs. By building on experience and listening to customers, we're making the Entegra Coach luxury experience a reality for more travelers than ever. As always, we back each coach with personalized customer service and coverage that is unmatched in the industry.
So from the moment you drive off the lot, you're not only an owner—you're a member of the family