The New Holland 83903421 is a genuine OEM double water pump pulley, an essential component designed for various New Holland agricultural tractors. This pulley plays a critical role in the water pump assembly, facilitating proper engine cooling and maintaining optimal operating temperatures. As a direct replacement part, it ensures precise fitment and reliable performance across a range of compatible models, including the 5610S, 6610S, 7610S, 8010, 8160, 8260, 8360, 8560, TM series (TM115 to TM190), TS series (TS80 to TS115), TV series (TV140, TV145), and 5640, 6640, 7740, 7840, 8240, 8340, 8670, 8770, 8870, 8970 models.