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Eberspacher D4W hydronic burner Genuine Eberspacher product Eberspacher D4W Hydronic, Eberspacher D4W SC Hydronic Applicable model list in description below Technical support available Additional heater replacement parts available from ButlerTechnik Suitable for the following Eberspacher Hydronic Heaters:252082050000 D4W Hydronic 252096050000 D4W SC 12v Hydronic 252097050000 D4W SC 12v251917050000 D4W SC 12v Hydronic 251917010000 D4W Hydronic 12v