New 2026 Newmar Mountain Aire 4551 Motor Home Class A - Diesel

Newmar Mountain Aire Class A diesel motorhome 4551 highlights:

• Spartan Chassis
• Theater Seating
• Euro Booth Dinette
• Exterior Power Storage Trays
• Exterior Dometic Freezer on Slide Tray

If you’re seeking a higher level of luxury with uncompromising quality and comfort, this well-endowed 2026 Newmar Mountain Aire 4551 won’t disappoint. Offering power, cutting-edge technology, quality amenities – this Class A diesel pusher raises the bar for discerning motorhome buyers. Effortlessly navigate this 45-foot motorhome thanks to Newmar’s Comfort Drive Steering System paired with a Spartan K3 passive steer tag axle chassis and powered by a robust 525HP diesel engine.

This Mountain Aire showcases premium style and décor beginning with heated tile flooring and super polished solid-surfaces surrounded by hardwood raised panel cabinetry. Theater seating, a tri-fold sofa, and plus size captain’s seats set the stage for the living area. Between the rectractable 50” Samsung 4K TV with Bose soundbar and the Samsung 4K TV above the cockpit, there’s never a bad seat in the house.

The all-electric galley serves up residential appointments of home with plenty of space to prepare for a crowd. The appliance suite includes a Whirlpool residential-size refrigerator, True Induction portable cooktop, and a Whirlpool microwave convection oven with air fryer feature. The large pantry with generous pull-out drawers offers plenty of room to stock up for extended stays. Clean-up is simple with the tiered farmhouse sink and the dishwasher in a drawer. Enjoy your meals at the Euro dinette or al fresco beneath the sprawling Girard Nova power awnings while the 43” exterior sidewall television/Bose soundbar entertains. The Dometic basement freezer and power storage trays will be a welcomed convenience when entertaining.

The master suite welcomes you with a king-size pillowtop bed opposite a 43” Samsung 4K LED TV for late night viewing. In addition to the dual wardrobes and dresser in the bedroom, the en suite bath offers an end cap closet with built-in shelving and a safe for your valuables. The spa inspired master bath also includes a double vanity and roomy shower enclosure with tiled walls, glass door, and a teak fold-down seat.

From coast to coast, this Newmar motorhome has the power and means to keep you comfortable year-round with a 12.5kW Onan diesel generator, Lithium Batteries, triple heat pump air conditioners, Oasis hydronic heating system, and much more! Whether you're taking your first step into luxury travel, or just looking to take the next step up, this Mountain Aire is equipped for the ultimate RV lifestyle.