The Fiat 4963585 is a genuine OEM exhaust valve designed for a wide range of Fiatagri and Fiat tractors, including the 80-90, 100-90, 110-90, 130-90, 140-90, 160-90, and 180-90 series. This critical engine component ensures proper exhaust gas flow, maintaining optimal engine performance and efficiency. With a total length of 120 mm, a head diameter of 38 mm, and a stem diameter of 9 mm, this valve is manufactured to original specifications for reliable fitment and durability.