The John Deere T30104 is a genuine OEM oil line designed for the oil cooler system in various John Deere agricultural tractors. This essential component ensures proper oil circulation and cooling, crucial for engine longevity and performance. It is compatible with a wide range of John Deere 40, 50, 55, and 60 Series tractors, including models 4030, 4230, 4430, 4630, 4040, 4240, 4440, 4640, 4840, 4050, 4250, 4450, 4650, 4850, 4055, 4255, 4455, 4555, 4755, 4955, 4560, 4760, and 4960. Constructed to John Deere's rigorous standards, this oil line provides a precise fit and reliable operation.