Entegra Coach · Class A · Cornerstone Reserve 45D
2026 Entegra Coach Cornerstone · Cornerstone Reserve 45D
A limited edition of 20 coaches on the 45D floorplan with exclusive Darknite Blue or Darknite Red paint, Luxe interior decor and Stonewall Matte Grey Maple cabinetry.
Key facts re-checked. Owners, dates and prices were re-checked against their sources. A full second review is still to come.
- Price when new
- $1,116,480
- Length
- Not documented
- Chassis
- Spartan K3 raised-rail chassis
- Engine
- Cummins X15 15-liter turbocharged diesel · 605 hp
About the price: List price as published by RVGuide.com for the 2026 Cornerstone Reserve 45D (https://www.rvguide.com/specs/entegra-coach/class-a/2026/cornerstone-reserve/45d.html). This is RVGuide.com's own suggested list price, not a builder price list. The guide lists prices by model year but gives no publication date and does not say what they cover (base or as-equipped).
These values describe this model year and configuration. An individual coach can differ, so check it against the coach’s own records. “Not documented” means the encyclopedia does not have that fact yet.
Full specifications
- Model year
- 2026
- Variant
- Cornerstone Reserve 45D
- Chassis maker
- Spartan
- Chassis
- K3 raised-rail chassis
- Engine maker
- Cummins
- Engine
- X15 15-liter turbocharged diesel
- Displacement (L)
- 15
- Horsepower
- 605
- Torque (lb-ft)
- 1950
- Transmission
- Allison 4000 MH 6-speed automatic
- Length (ft)
- Not documented
- Height (ft)
- 12.67
- Width (in)
- 101
- Slides
- 4
- Floorplan
- 45D
- Generator maker
- Not documented
- Generator
- Not documented
- Generator (kW)
- Not documented
- Fuel (gal)
- 175
- Fresh water (gal)
- 100
- Gray water (gal)
- 62
- Black water (gal)
- 41
- Luxury systems
- Not documented
- Intended use
- Not documented
Other 2026 records
Notes
Chassis, engine, torque (at 1,150 rpm), transmission, fuel tank, 20,000 lb hitch, paint, decor and the 20-coach limit come from the builder's page; height, GVWR 54,000 lb, tank capacities and four slides come from RVGuide. The length is left blank because the builder's page says 45 ft 5 in while RVGuide lists 44.92 ft.
Brochures and sources
Links open the original page. Facts are checked against these sources; tell us if you find one that is out of date.
2026 Cornerstone coaches for sale
See matching listings in the Motorcoach.direct marketplace.