Contact Information
Owner
RV Details
- Price: $99,900
- Year: 2007
- Model: KOUNTRY STAR 3910
- Listing ID: 7084531
- Partner ID: 5042294550
- Posted On: Sep 29, 2026
- Updated On: Sep 29, 2026
Description
2007 Newmar Kountry Star 3910 — 400 HP Cummins / Spartan Chassis
Experience premium diesel-pusher motorhome travel in this 2007 Newmar Kountry Star 3910, powered by the desirable 400 HP Cummins ISL 8.9L diesel and built on a Spartan Mountain Master GT chassis with independent front suspension.
The 3910 offers the combination of Newmar's renowned construction, a powerful Cummins diesel, and a spacious, comfortable floorplan designed for extended travel. The Allison 6-speed automatic transmission, air brakes with ABS, and exhaust brake provide confident performance on the highway and through mountain grades.
Key Specifications
400 HP Cummins ISL 8.9L diesel
Spartan Mountain Master GT chassis
Allison 3000MH 6-speed automatic transmission
39' 2" overall length
32,000-lb GVWR
42,000-lb GCWR
100-gallon diesel fuel tank
105-gallon fresh-water tank
65-gallon gray-water tank
45-gallon black-water tank
8.0 kW diesel generator
2,000-watt inverter
10,000-lb-rated hitch
Independent front suspension
Air brakes with ABS
Exhaust brake
The Kountry Star 3910 is an excellent choice for anyone looking for a solid, well-built diesel pusher with the highly desirable 400 HP Cummins and Spartan chassis. Its combination of power, drivability, storage, and residential-style amenities makes it well suited for both weekend adventures and long-distance full-time travel.
FIRST CLASS RV & MARINE
All major appliances are thoroughly inspected by our trained technicians and guaranteed to work perfectly at time of delivery.
We’re a full service, knowledgeable, family owned, friendly dealership with an extensive selection of inventory and the best service department on the Colorado River!
- Excellent Financing Available
- Trade-ins Welcome
- Nationwide Warranty Available
First Class RV & Marine – 3595 McCulloch Blvd N. – Lake Havasu City, AZ 86406
- On the corner of Jamaica & McCulloch
928-412-8686