The Fiat 90185 is an OEM 5th cylinder connecting rod, specifically engineered for a wide range of Fiat agricultural tractors including models such as the 315, 415, 450, 480, 500, 540, 550, 600, 640, 650, 680, 750, 780, 850, 880, 900, 980, 1000, 1180, 1280, 1380, 1580, and 1880. This critical engine component measures 180 mm in length (center to center), featuring a 30 mm small end bore and a 60 mm big end bore. Weighing approximately 1.2 kg, it is manufactured to OEM specifications, ensuring precise fitment, optimal engine performance, and long-lasting durability.