This genuine OEM Case IH part 15855361780 is a critical gear component designed for various Case IH JX-U series agricultural tractors, including JX100U, JX1070U, JX1080U, JX1090U, JX1100U, JX70U, JX80U, and JX90U models. It is also compatible with New Holland TD series tractors such as TD5010, TD5020, TD5030, TD5040, TD5050, TD60D, TD70D, TD80D, TD90D, and TD95D. This durable gear ensures reliable power transmission within the machinery.