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Eberspacher Airtronic D2 to S3 D2L Heater Upgrade Kit 12v Heater and wiring conversion kit for to upgrade old version Eberspacher Espar D2 (25206) to the latest Airtronic S3 D2L (252953) heater model. The D2 heater and pump have been a popular choice for diesel heating in Camper, Marine, RV, Ambulance and Welfare Unit installations because of its optimised fuel efficiency and capability to provide 2kw of heating power through 60mm ducting. Whilst repair parts are still available for the 252069 D2, for fleet maintenance, where time is critical, a plug 'n' play replacement heater unit can often prove the most effective solution to get a vehicle back on the road or a welfare unit back into hire. For Marine and RV applications the D2 conversion kit is a simple and effective way to upgrade your heating system to a new and improved version with minimal work keeping your current Airtronic, ducting, fuel line and controller installed. Benefits of the included Airtronic upgrade harness: No wiring required: Plug-n-play design utilizes the already installed wiring harness and controller Essential for reducing downtime of Ambulance and Welfare fleets when replacement of older heater and pumps is required Compatible with D2 D4 D5 Airtronic heaters using 801 and 802 modulators or the EasyStart Select Diagnostic port for EasyScan included for heater testing and repair of Ax2 Ax3 models Fuel pump adapter lead included for old 4519 pump to new digital fuel dosing pump Certified for installation in passenger areas and in proximity to dangerous substances. PLEASE NOTE: This heater upgrade kit is compatible with existing heater installation using EasyStart Select or EasyStart Timer. If your installation has a different controller version please also see suggested items for Easy Start controllers suitable for the D2 upgrade. The S3 D2 L heater from Eberspacher is designed to operate efficiently using ducting with a minimum internal dimension of 60mm. 75mm ID ducting may also be used. Excludes outlet hood. This kit includes: A Genuine Eberspacher Airtronic S3 D2 L 12 volt heater & fuel pump Plug 'n' play heater adapter harness and fuel pump adapter A comprehensive installation CD This a genuine Eberspacher warranted heater with next day UK delivery available and also shipped internationally. 12 volt only Heater Applications Include Replacement Airtronic D4R heater & fuel pump 2kW power output through smaller ducting size Welfare Units Vans and Small Buses Caravans, Mobile Homes & RV's Mobile Workshops Electric Vehicles Motorhome & Campervans As a replacement heater in Marine applications where suitable marine components have been prior fitted. If you are planning a new Boat installation with this heater package to ensure you have all the necessary components please contact our team Customised Heater Kits Bespoke vehicle heater kits and marine heater kits are available, or if you require any more accessories for this heater kit please contact Butler Technik with your requirements.