The Sparks Overland 4kW Portable Mini Diesel Heater
The Sparks Overland 4kW Portable Mini Diesel Heater
Stay warm on our next overlanding or camping trip with the Sparks Overland 12V Portable Diesel Heater. Designed for overlanders, van lifers, RV owners, and off-grid adventurers, this compact 4kW heater delivers reliable heat in cold weather. Perfect as an alternative to Planar and other diesel heaters, it's easy to install, fuel efficient, and built for durability in rugged conditions.
37.8% SMALLER than our Original Model
Ships in 4-6 weeks after order
Proudly building 500 units this year!
Sparks Overland 4KW Diesel Heater
2-Year Warranty Included
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Production & Availability
Each heater is hand-built with 6–8 hours of craftsmanship per unit. Please allow 2-4 weeks for production plus shipping time.
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Why Choose Our Heater?
At Sparks Overland, every detail of our heater is designed with performance, safety, and real-world use in mind.
1. Real Metal Fuel Tanks
We use sealed, pressure-vented metal fuel tanks—not cheap plastic. They’re built to last, built for safety, and built for the field.
2. Warm, Protected Fuel
Our fuel tank is mounted inside the heater box, shielded from the cold. External tanks and lines are exposed to freezing temperatures—diesel can gel at just 10°F. We keep fuel warm so your heater runs when you need it most.
3. A Real Engine—Not a Toy
We power our heaters with the Velit engine for its high-altitude capability, fuel flexibility, and proven safety record. This is an engine you can trust in the mountains or the desert.
4. Premium Components
Every single part is hand-selected for reliability—from the Kawasaki snowmobile fuel lines, new exhaust with muffler, to the stainless hardware. We’ve scrutinized every component inside the box, so you never have to.
5. Only Fresh Air
We engineered our heater to draw air exclusively from outside the unit—clean, fresh air. Many competitors pull air from inside their engine bay, contaminating your tent with chemical smells that never go away.
6. Hand-Built Quality
We don’t mass-produce. Each heater takes six hours to build by skilled hands right here in Colorado. Real people, real craftsmanship—no shortcuts.
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What’s in the Box:
•1.9-gallon stainless steel fuel tank (flat design, pressure relief valve)
•VELIT 4KW diesel air heater
•Mountable legs
•Quick-connect duct & 5 feet of ducting
•12V cigarette lighter power plug
•Bluetooth thermostat controller
•Silicone fuel funnel
•Accessory bag for cables & parts
•Instruction manual
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Key Features & Advantages
-Performance
•4,000W / 14,000 BTU output — heats large spaces like garages, campers, and workshops quickly
•High-altitude tested up to 16,000+ ft with automatic air-fuel adjustment for mountain performance
•Proprietary combustion chamber design for higher efficiency (exhaust temps 30% lower than cheap units)
-Efficiency
•Advanced heat exchanger for optimal fuel use
•Reduced operating costs and emissions
Quiet Comfort
•Dynamically balanced blower fan
•High-volume, low-frequency pump for minimal ticking noise
•Silent enough for uninterrupted sleep
User-Friendly Control
•Intuitive Bluetooth thermostat with integrated digital display
•Remote temperature, fan speed, and mode adjustments via app
•Real-time temperature and operational status
Portability & Installation
•Compact, lightweight design
•Includes mounting brackets for fixed installation or portable use
•Great for campers, cabins, job sites, and off-grid setups
Safety
•Built-in carbon monoxide and flammable gas sensors with auto shut-off
•High-temp limit switch & flameout protection
•Low-fuel and overheat automatic shutdown
•Weather-sealed controller
Reliability:
•Japanese glow plug with 3X the lifespan of cheap plugs
•All components are high-quality and field-tested
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Specifications
•Dimensions: 20x12x12.5
•Weight: 36 lbs (16.3 kg)
•Fuel Tank: 1.9-gallon stainless steel
•Output: 4,000W / 14,000 BTU