Espar AS3 B2L 12V Heater- Full Kit (Gasoline)The Espar AS3 B2L 12V Heater Full Kit (Gasoline) is the classic way to heat the interior of your van using fuel from your main diesel tank. This kit includes everything you need to install the Espar in your Sprinter van and will operate effectively up to ~ 13,120 ft. in elevation with the included altitude sensor. Not all Espar kits are built the same. These units are genuine Eberspacher heaters with high quality wiring harnesses from Eberspacher. Key