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Espar Airtronic D2L 12V Sprinter kit

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Espar Airtronic S2 D2L 12v Air Heater Kit for Sprinter van

The Espar D2L heater sprinter kit gives you all the performance and durability that you could want from your sprinter heater - all at a great price point. First off, you’ll find everything in this sprinter conversion kit that you’ll need for a quick and convenient installation. This includes mounting plate, fuel line filter, a 2 meter exhaust hose extension, as well as a wiring harness extension. Coming in both 12V/24V options, this Espar diesel heater will give you 2.2kW / 7500 BTU maximum output, and it can function at altitudes of up to 9900 feet (3 kilometres)  

It's the engineering that has gone into this kit that makes it really special. This upgrade features a brushless fan, giving you extra comfort and added durability. And for less noise, an improved fuel pump has been introduced to reduce intrusive clicking.  Meanwhile, to enhance convenience and performance, this 2nd generation Espar sprinter diesel heater also comes with an integrated temperature and altitude sensor. And if you are looking for more precision temperature control, this sprinter conversion kit comes with an additional 9.8ft plug and play extension cable that can be used to install the external EasyStart Pro controller. You will also find that your Espar Diesel Heater is the perfect all weather heater - functioning in temps as low as -51°F (-46°C).

Maintenance and spare parts are never an issue either, as Espar is manufactured in Germany and has distributors across the globe.

This specific kit has been custom design for use with Mercedes-Benz / Freightliner / Dodge Sprinters with 140” , 144”, 158”, 170” wheelbase.

Keys features of the Espar S2 D2L Sprinter Kit

  • All in one kit. Requires no extra tools or cable crimping
  • Simplified same line fuel system installation 
  • Mounting plate that can be cut to fit various installation locations
  • Additional 2 meters of exhaust
  • Additional 9.8ft plug and play extension cable for installing EasyStart Pro controller 
  • More environmentally friendly Improved combustion operation 
  • Brushless fan for 2k hours more heating  (5k hours instead of 3k hours)
  • New brushless fan for added durability and quieter performance
  • Stepless blower system automatically changes fan speed to match set temperature and actual vehicle temperature to provide maximum efficiency and comfort levels
  • CLICKING sound massively reduced with improved fuel pump piston
  • Integrated altitude sensors that can operate in altitudes of up to 9900 feet
  • Enhanced on-screen fault diagnostics with new controller communication system
  • Shares exact dimensions with the Espar Airtronic D2 Diesel Heater Kit
  • EasyStart Pro controller provides automatic temperature control with integrated temperature sensor 
  • Available in 12V and 24V 
  • Air ventilation mode available on all Airtronic S2 D2L models

User benefits of the Espar S2 D2L Sprinter kit 

Custom designed from user feedback, this easy to install Espar Diesel Heater is the right choice for owners of  Mercedes-Benz / Freightliner / Dodge Sprinters with 140” , 144”, 158”, 170” wheelbases. Compact in size, it comes with all the features you need and more. To begin with, to ease installation, it comes with a genuine auxiliary fuel tap connection, and also an inline fuel filter. And to aid passenger comfort, there is an extended exhaust hose that will reroute exhaust fumes away from the passenger door.  

Most of all, this sprinter diesel heater will give you all the functionality you are after at a price that you’ll like. Installation requires no specialist knowledge, and everything you need is in the kit. Performance wise, this new update is a real step up. The introduction of brushless technology means that this Espar diesel lasts longer and runs more quietly. Not only that, it delivers a whopping 2k hours more heating - providing 5k heating, as opposed to the 3K hours of previous models. And intrusive clicking has also been greatly reduced through the introduction of an improved fuel pump piston, ensuring you can enjoy uninterrupted sleep. 

To help you better regulate heat in your vehicle, this sprinter diesel heater comes equipped with a timer and thermostatic functions. And if you feel you want to more precisely control your temperature, you can install a seperate Pro controller using the additional 3 meter / 9.8 foot extension harness that comes with the kit.  What’s more, Espar S2 D2L heater provides detailed on screen diagnostics that will help you to determine the source of any issue as soon as it occurs. 

There are also a number of installation options to choose from: you can select from either 60mm or 75mm outlet ducting.  

What the Espar S2 D2L Sprinter kit is suitable for:

  • Mercedes-Benz Sprinter
  • VS30
  • Dodge Sprinter
  • Freightliner Sprinter
  • Mercedes-Benz Transporter T1N


  • 128”
  • 140”
  • 144”
  • 158”
  • 170”

Heatso’s engineers are here to help

The Espar Airtronic S2 D2L is an excellent heating option for your vehicle. But if you have any questions about it, or would like to hear about other options, our customer service is onhand to help. And when you do find the ideal solution to meet your needs, our engineers are available to talk you through the whole installation process, step by step.

Technical data:



Diesel – EN 590

Heat Flow Control





Heat Flow










Fuel Consumption

l / h





gal/ h




Average Power consumption





Average Power Consumption while Starting



Rate Voltage


12 volt

Dimensions LxWxH


310 x 115 x 122

Espar / Eberspacher Part Number:  

  • 252721050000
  • 25.2721.05.0000 
  • 25 2721 05 0000 
  • 25.2721.05.00.00
  • 25 2721 05 00 00 

Installation kit 252720800000 Contents: 

  • Fuel pump (12v)
  • Fuel hose
  • Fuel T piece kit - Adapter for aux tap included
  • EasyStart Pro Controller - 3 meter extension included
  • Exhaust Silencer / Muffler - included
  • Electrical harnesses - Plug n' Play
  • Stainless steel exhaust pipe - approx. 2 meters!
  • Combustion intake pipe 1 meter
  • Flexible ducting (60 mm. diameter) - 0.5 meter
  • Inlet / Outlet grills
  • Inline fuel filter included with every kit
  • Floor mounting plate included
  • Air outlet grill (60 mm. diameter)
  • Screws, clips and plastic straps required for installation
  • Installation manual CD
  • Warranty documentation


Warranty Included

5 Reviews Hide Reviews Show Reviews

  • 5
    espar d2l

    Posted by bob on 28th Oct 2020

    great value and great heater. the documentation is a little hard for the average guy but you tube will get you thru the installation . great product

  • 4
    Missing part

    Posted by Tyler on 23rd Oct 2020

    I am happy with my purchase but product was missing one part.

  • 5
    good kit

    Posted by Patty on 8th Oct 2020

    swapped old d2 for this one and can install electrics with my eyes closed compared to old kit extension cable is very good thing to have Sprinter aux port connection is confusing but works well

  • 5
    Awesome kit

    Posted by Jesse on 10th Jun 2020

    Very happy with this kit. Everything in one place, from one order, no need to look for other parts. So, I appreciate of this convenience.
    Heatso support team was quite responsive as well. Replied to my emails rather quickly.
    Overall, great service. Highly recommended.

  • 5
    Complete kit

    Posted by Steven Hellving on 2nd Jun 2020

    been waiting for this for a while. Really happy with the kit, fully composed with all the bits and pieces you need. Smart connection for the aux tap (thumbs up) and thank god for longer harness!