The Lombardini L4936168 is a genuine OEM starter pinion designed for various Lombardini diesel engines. This critical component ensures reliable engine starting by engaging with the flywheel. It features 9 teeth, an outer diameter of 28 mm, an inner diameter of 10 mm, and an overall length of 46 mm. This part directly replaces the original Lombardini L4910020 starter pinion, ensuring perfect fit and function for models such as 3LD450, 3LD510, 4LD640, 4LD705, 4LD820, 5LD675-2, 5LD825-2, 5LD825-3, 5LD825-4, 6LD325, 6LD360, 6LD400, 9LD561-2, 9LD625-2, 9LD626-2, 11LD522-3, 11LD625-3, and 11LD626-3.