Sprinter Camper Van Conversion Espar Airtronic B4l M2 (gasoline/petrol) Heater

$1,614.98 - $1,786.55
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15.00 (in)
8.00 (in)
20.00 (in)
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Espar Airtronic B4L M2 (12v) Gasoline Van Heater
This Espar Heater is compatible with all gasoline-powered Mercedes Sprinter, Dodge Sprinter, Ford Transit, and RAM ProMaster Vans.
Voltage: 12 Volts
Fuel Type: Gasoline
Max Power: 13,650 BTU (4 kW)

  • Low: 4,436 BTU (1.8 kW)

  • High: 12,970 BTU (3.8 kW)

H-Kit Compatible: (This kit is not necessary as, thanks to its integrated altitude sensor, there is no additional wiring or installation required for high altitude operation)

  • Espar Airtronic B4L 12v Heater

  • Fuel pump (12v)

  • Fuel hose

  • Exhaust Silencer

  • Electrical harnesses

  • Stainless steel exhaust pipe

  • Fuel Standpipe - 300mm

  • Combustion intake pipe

  • Flexible ducting

  • Inlet / Outlet grills

  • Air outlet

  • Screws, clips and plastic straps required for installation

  • Installation manual

  • Warranty documentation

Controller Options:

The EasyStart Pro Timer is highly recommended to go with the B4L M2 Espar Heater

  • Offers an integrated temperature sensor and simple plug n’ play installation

Espar Mini Controller

  • Switches heater on and off, can control heating mode


What does this product operate like?
The heaters made by Eberspacher control your climate. They are air heaters that operate like forced air furnaces. They use your vehicle's fuel and power supply so that you do do not idle your machine while driving.

How loud are the heaters?
They actually are very quiet and should not be noisy at all. The stepless blower system also ensures quieter performance compared to previous models, while the improved fuel pump piston reduces clicking noise. The Espar B4L also sports a brushless fan which helps to further reduce noise.
What is the High Altitude Kit? Do I need it for my van?
The High Altitude Kit is NOT REQUIRED for this specific unit. The Espar B4L was engineered to operate in extreme conditions and high altitudes. It can operate in temperatures as low as -46°C / - 50°F and at altitudes of up to 9,900 feet (3,000 kilometers). This is enabled thanks to its integrated altitude sensor and, unlike earlier models, there is no additional wiring or installation required for high altitude operation.
Can I use these Airtonic heaters with other devices from Eberspacher’s inventory?
Yes, you can. The Espar B4L is compatible with all 3 communication protocol technologies used by Espar - CAN, LIN and S+.

Does the wire fit behind the wheel well?
Unfortunately, no.

What is the best application for these heaters?
They do cab and sleeper hat very well. They work well in class 8 trucks, workshop vehicles, and freight compartments.
Is this heater suitable for use in marine applications?
No, we do not recommend using this for aquatic vehicles.

How can I get this installed?
We can handle it for you. Contact us and we can get you set up. Call 503-427-2270.


  • It is very cost-effective

  • Costs next to nothing in fuel and power

  • The control unit is integrated

  • It is very easy to maintain and install.

  • Worried about diagnostics and figure out what is wrong? The machine does it for you.

  • The unit puts out heat faster than any other product in the marketplace right now (2018)

  • Need to fix something? There is a quick release that will let you do it quickly

  • Worried about compliance? The unit is EPA verified and CARB compliant. It is legal to use in North America

Do you value your time? You should. It a unique resource that you cannot get back. If you want more time then you should consider this product to help you save time.
How does it help? If you hate scraping ice off your windows in the morning then this product with definitely help you and will save you time. We all know scraping windows can take anywhere between 5 to 10 minutes depending on the situation.
What makes these Eberspaecher's air heaters are unique is that they operate outside of the engine and the vehicle's heat balance. They pull in the outside air and heat it up and then use that to heat the interior of your vehicle. If you are a commercial driver in any capacity then these air heaters are a must.
Where else can you put these heaters? You can install them in the cabin where the luggage compartment is located or under your floor. If you have a digital Eberspaecher timer then you will find you will have a lot of control over the product.
No more ice, no more shivering your vehicle, and you can concentrate on your drive. It is also easier on the environment as a whole. You can use the extra time you save doing whatever else you feel like doing. Spend more time with your family? Sure. Work out? Yes. Get ready for your trip. Of course.