Espar Airtronic M3 B4L Gasoline 12V Ford Transit Kit with EasyStart Pro Controller

Powerful Gasoline Heater for Ford Transit Comfort

Enjoy fast, reliable cabin heat for cold-weather Transit travel, overnight stops, and year-round van comfort. This 12V gasoline air heater delivers up to 13,600 BTU (4.0 kW) of stepless heat output and works with the EasyStart Pro controller for precise temperature management.

Benefits & Use Cases

The Espar Airtronic M3 B4L is designed for gasoline-powered vans and is a strong fit for Ford Transit camper conversions, mobile work vans, and other enclosed vehicle builds that need dependable heat with compact installation flexibility. Its Airtronic 3 platform combines quiet operation, strong airflow, and automatic altitude adjustment, making it well suited for winter travel, mountain driving, and extended off-grid use.

• Fast cabin warm-up for cold starts, overnight parking, and shoulder-season travel
• Stepless heating performance helps maintain stable comfort with quieter operation
• Automatic altitude adjustment supports more reliable performance at elevation
• Compact heater body suits under-seat and space-conscious van installations
• Gasoline configuration makes it ideal for petrol-powered Transit builds

Technical Specifications

• Fuel Type: Gasoline
• Voltage: 12V
• Max Heat Output: 13,600 BTU (4.0 kW)
• Heat Output Range: 4,400–13,600 BTU (1.3–4.0 kW)
• Fuel Consumption: 0.04–0.15 gal/h (0.17–0.55 L/h)
• Power Consumption: 4 – 38W
• Max Altitude: 18,000 feet (5,500m) with integrated altitude sensor
• Warranty: 2 years, extendable by 1 year
• Dimensions (Heater body only): 376 x 140 x 150 mm (14.8 x 5.5 x 5.9 in)
• Part Numbers: Heater body PN 202030050000;
• Certifications: ECE R122 (heating) & ECE R10 (EMC)

Browse Eberspächer/Espar Manuals & Technical Documentation

Vehicle Compatibility

• Ford Transit camper van conversions
• Ford Transit cargo and mobile service vans
• Other gasoline-powered vans, small buses, and motorhome builds using a 12V air heating system
• Applications that need strong cabin heat with compact heater packaging

Not suitable for diesel applications or marine use.

Kit Includes

• Espar Airtronic M3 B4L Gasoline heater unit (12V)
• Fuel pump (12V)
• Fuel hose
• EasyStart Pro controller
• Exhaust silencer / muffler
• Electrical harnesses - Plug n' Play
• Combustion intake pipe (1 meter / 3.3 ft)
• Flexible ducting (90 mm / 3.54 in diameter) - 0.5 meter (1.64 ft)
• Inlet/outlet grills - adjustable flat 45-degree grills
• Air outlet grill (90 mm / 3.54 in diameter)
• Screws, clips, and plastic straps required for installation
• Installation manual access (scan QR code for download)

Additionally included:

• Genuine Ford push-fit adapter for auxiliary tap
• Floor mounting plate
• EasyStart Pro controller extension - 3 meters (10 ft)
• Stainless steel exhaust pipe - approx. 2 meters (6.6 ft)

FAQs

Is this a good heater for a Ford Transit van?
Yes. This kit is aimed at Ford Transit applications and suits camper conversions, mobile workshops, and other enclosed van builds that need steady gasoline-powered cabin heat. 

What does the EasyStart Pro controller do?
EasyStart Pro gives you convenient control over the heater and supports precise temperature adjustment for more comfortable day-to-day use. 

Can this heater be used at higher elevation?
Yes. The Airtronic 3 platform includes automatic altitude adjustment, which helps maintain more dependable heating performance during mountain travel. 

Is this suitable for a DIY van build?
Many van owners install air heaters themselves, especially when the kit includes vehicle-related hardware and wiring. Careful routing of fuel, intake, exhaust, and warm-air ducting is important. 

Why does ducting layout matter?
Good ducting design helps airflow, reduces overheating risk, and improves comfort across the van interior.