Eberspacher Heater D4W or D5W Glow Pin Screen Kit | 252121990113

The Eberspacher Glow Pin Screen Kit for D4W and D5W hydronic heaters provides a genuine replacement kit with glow pin liner and O-ring seals. Designed to restore reliable ignition and fuel flow, this kit ensures optimal performance across compatible models such as D4WSC, D5WSC, B4WSC, and D5WZ. Each component is manufactured to exact Eberspacher specifications, delivering a precise fit and durable seal integrity. Ideal for maintenance or repair of airless glow systems, the kit supports consistent cold-starts and smooth operation in variable conditions. By choosing this genuine kit, you benefit from quality materials, tested compatibility, and technical compatibility with Butler Technik’s support network to keep your hydronic heater running efficiently.