Photo of Rv
Photo of Rv
Photo of Rv
  • Price: $499,000
  • Year: 2021
  • Model: ESSEX 4578
  • Property ID: 6926210
  • Partner ID: 5036754740
  • Posted On: Jun 20, 2025
  • Updated On: Jul 18, 2025

RV Description


Full warranty on the engine and coach until Sept 2029! BUNKS floorpan! Only 16K miles

The 2021 NEWMAR ESSEX 4578 is a luxurious Class A motorhome that epitomizes comfort and sophistication on the road. This top-of-the-line model boasts a sleek and modern design, with premium features and amenities that make every journey a pleasure. The spacious interior offers plenty of room to relax and unwind, with high-quality furnishings and finishes throughout. The NEWMAR ESSEX is equipped with the latest technology and safety features, ensuring a smooth and secure driving experience. Its powerful engine provides ample power for tackling challenging terrains, while the smooth suspension and advanced handling make for a comfortable ride. Whether you're traveling alone, with family, or entertaining guests, the NEWMAR ESSEX offers everything you need for a memorable road trip. From the fully equipped kitchen to the luxurious master suite, every detail has been carefully considered to provide the ultimate in convenience and comfort. With its stylish exterior and opulent interior, the NEWMAR ESSEX is sure to turn heads wherever you go. Don't just travel - travel in style with the 2021 NEWMAR ESSEX 4578.


General Info:



  • Chassis: Spartan K3 Chassis 605HP
  • Model: 2021 Essex Diesel Pusher 4578
  • Engine: Cummins 605HP with engine block heater
  • Generator: 12.5kW Onan Diesel with Auto Changeover
  • Inverter: 3000 Watt Sine Wave
  • Electrical Service: 50 AMP
  • Construction: Aluminum-Frame Sidewalls & Rooftop

  • Interior:

  • Villa UltraLeather® Sofa, Captain’s Chairs
  • Whirlpool appliances
  • Multiplex lighting system
  • Heated floors (Hydronic Zone)
  • Memory settings for driver’s seat, mirrors, steering wheel
  • Solid Surface Countertops, Undermount Stainless Sink
  • Technology:
  • Dash radio with 360 Surround Sound System & Subwoofer
  • Samsung LED TVs + Blu-Ray players (living + bedroom)
  • Garmin navigation system
  • WiFi Ranger SkyPro
  • Satellite system prepped
  • Comfort & Convenience:
  • Air leveling, Comfort Drive steering
  • Power window shades and awnings
  • Central vacuum
  • Dishwasher in a drawer
  • Central monitor & camera system

  • Here are some of the notable upgrades:



    Sofa/Dinette Overhead Cabinet - Included in base

    30A/120V Cord Conn./Tstr Trlr - $2,373

    RV Sanicon Turbo System - $950

    Stainless Trim on Baggage Door - $1,553

    Dishwasher in Drawer - Included

    Universal Toll Module - Included

    Winegard RTT-20B + SKM300 - $3,136

    2-in-1 DVD for Bunks - $1,435

    Exterior TV Compartment - $2,653

    Tray Storage Systems (2) - $1,400 (total 2)


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