Espar AM3-B4L - Sprinter - Petrol

Built for Sprinter owners who demand more than a space heater — the Espar Airtronic AM3-B4L is a commercial-grade petrol air heater engineered to perform in the real world, season after season.

With a 5,000-hour brushless motor, built-in altitude compensation up to 18,000 ft, and a complete Sprinter-specific installation kit included, this is the heater serious van builders and fleet operators reach for.

Why the AM3-B4L?

• 4 kW output — twice the heating power of the D2L, ideal for larger Sprinter builds and cold climates
• 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
• Improved fuel metering pump acoustics — runs cleaner and quieter than the outgoing model
• Runs on gasoline/petrol — draws directly from your Sprinter's existing fuel tank
• EasyStart Pro Controller included — timer-based scheduling right out of the box
• Muffler Kit included — quieter exhaust, no extra purchase needed
• 2-year / 2,000-hour warranty — backed by Eberspaecher's manufacturer warranty

Specs

• Fuel Type: Gasoline / Petrol
• Voltage: 12V
• Max Heat Output: 4 kW
• Altitude Rating: Up to 5,500m / 18,000 ft (built-in)
• Warranty: 2 years / 2,000 hours
• Vehicle Fit: Mercedes Sprinter
• Part Number: 20.2820.30.0400 (Kit)

What's Included

• Eberspaecher Airtronic AM3-B4L 12V Heater
• Fuel Metering Pump
• EasyStart Pro Controller
• Muffler Kit
• Fuel Line & Clamps
• Sprinter Fuel Line Connector
• Fuel Pick-Up Pipe
• 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

• Mercedes Sprinter camper vans and conversions
• Cargo vans and commercial vehicles
• Mobile workshops and tool trucks
• Trailers

Questions about fitment 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.