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Eberspacher Hydronic Burner. Genuine Eberspacher product Eberspacher D5W Hydronic, Eberspacher D5W SC Applicable model number list in product description Eberspacher Hydronic Burner 25.1920.10.00.00 Technical support and additional products available from ButlerTechnik Suitable for the following Eberspacher Hydronic Heaters252098050000 D5W SC 12v252099050000 HYDRONIC D5W SC 12v252083050000 HYDRONIC D5W SC 12v251975050000 HYDRONIC D5W SC 12v251920050000 D5W