The 2006 Newmar Mountain Aire Diesel Pusher Class A Motorhome combines contemporary with an overall timeless appeal. Its Cummins® ISL 400-HP 8.3L Spartan Mountain Master Chassis and power options make it an unrivaled performer. Luxury features, including this year’s expanded interior, and an optional fireplace which is available in select models will make you feel right at home. Starting from $276,474. Build your custom 2006 Newmar Mountain Aire Diesel Pusher at World Wide RV. Newmar RV.