The Espar AS3 B2L heater Full Kit (Gasoline) is the classic way to heat the interior of your van using fuel from your main tank. AVC RIG carries this kit. It includes everything you need to install the Espar in your Sprinter van, and it operates up to ~13,120 ft. with the included altitude sensor.
Not all Espar kits are built the same. These are genuine Eberspacher heaters with Eberspacher wiring harnesses.
Key Features: Espar AS3 B2L Heater Full Kit (Gasoline)
Fits universally where space allows
Espar Full Kits are designed for 2007+ Mercedes Sprinters, 2014+ Ram ProMaster, and 2015+ Ford Transit vans (read more below)
Efficient cabin heating on gasoline builds, no diesel tank required
Low electrical draw (6–26 W) protects your house batteries off-grid
Automatic altitude capability up to 13,120 ft (4,000 m) for mountain trips
Compact body for flexible placement in van conversions and campers
What's Included
Espar AS3 B2L 12V Heater (Gasoline)
INSTALL KIT - AIRTRONIC S3 B2L 12V
CONTROL KIT - EASY START PRO CONTROLLER WITH ADAPTOR
EXHAUST MUFFLER 24MM
26-28mm MUFFLER CLAMP (2x)
FUEL LINE ADAPTER 7.5MM - 3.5MM
GAS FUEL PICKUP (standpipe)
Vehicle Fit and Fuel Pickup Notes
How the Espar AS3 B2L heater connects to fuel depends on your van.
Mercedes Sprinter vans: This kit comes with a fuel standpipe (fuel pickup), not the T-Piece kit commonly used. The install kit hoses attach to the factory auxiliary port with clamps, or source the Dorman Auxiliary Fuel connector adapter (Part# 800-188) separately.
Ram ProMaster vans have an Auxiliary Fuel Port under the cab floor entry. The included hoses attach to the factory port with clamps, or source an Auxiliary Fuel connector adapter separately.
Ford Transit vans will require dropping the fuel tank on the vehicle and adding an additional fuel pickup pipe and components. Espar B2L - Ford Transit Kit option now available!
Muffler Installation: The muffler shows no airflow direction. Espar confirmed it mounts either direction; follow the install guidelines for undercarriage mounting.
Recommended: add insulation wrap to exterior fuel lines and connections to prevent cracking.