The Bobard 57551026 is a genuine 12-volt preheat relay specifically designed for OM617 engines, commonly utilized in Bobard agricultural tractors. This critical component features 4 terminals and ensures reliable engine starting by efficiently controlling the glow plugs. It is essential for maintaining optimal engine performance and cold-weather starting capability in compatible Bobard machinery. The relay measures 95mm in length, 51mm in width, and 51mm in height, with a total weight of 0.12 kg.