Espar AM3-D4R - Diesel

⚠️ Special Order item — please contact us for lead time before ordering.

The Espar Airtronic AM3-D4R is Eberspaecher's high-throughput Generation 3 diesel air heater — engineered for applications that demand more airflow than the standard D4L.

With a higher air throughput rating, 5,000-hour brushless motor, and built-in altitude compensation up to 18,000 ft, the D4R is the choice for larger spaces and demanding commercial installs.

Why the AM3-D4R?

• Higher air throughput than the D4L — moves more heated air, ideal for applications with more complex ducting arrangements
• 4 kW output — powerful enough to heat a full-size cargo van or camper in sub-zero temps
• Brushless motor — extended 5,000-hour service life and noticeably quieter operation than previous generations
• Built-in altitude adjustment — works up to 5,500m / 18,000 ft with no additional module required
• Runs on diesel — draws directly from your vehicle's existing fuel tank; also compatible with HVO and GtL fuels
• 2-year / 2,000-hour warranty — backed by Eberspaecher's manufacturer warranty

Specs

• Fuel Type: Diesel (EN 590), HVO, GtL (EN 15940)
• Voltage: 12V
• Max Heat Output: 4 kW
• Altitude Rating: Up to 5,500m / 18,000 ft (built-in)
• Warranty: 2 years / 2,000 hours
• Part Number: 20.2829.57.0400

What's Included

• Eberspaecher Airtronic AM3-D4R 12V Heater
• Fuel Metering Pump
• Fuel Line & Clamps
• Wire Harnesses
• Stainless Steel Exhaust Pipe
• Combustion Intake Pipe
• Flexible Ducting — 0.5 meter
• Outlet Grill
• Air Outlet Hood (90mm straight)
• Mounting Plate with Seals and Screws
• Screws, Clips, and Plastic Straps
• Installation Manual
• Warranty Documentation

Ideal For

• Large cargo vans and camper conversions
• Trucks and commercial fleet vehicles
• Mobile workshops and tool trucks
• Applications requiring higher airflow than the D4L

Questions about fitment, lead time, or installation? We're here to help — reach out before you order and we'll make sure you get the right kit for your build.