The Fiat 5951881 is a genuine 11V engine glow plug, essential for reliable cold starting in a wide range of Fiat and New Holland agricultural tractors. This OEM component, also cross-referenced as New Holland 5951881 and Ford 83921769, features an M10x1.25 thread and a 12mm hex key size. With an overall length of 70mm, this glow plug ensures efficient pre-heating, optimizing engine performance and reducing wear during cold weather operations for compatible models.