The John Deere LCA66868 Disk Spring is an authentic OEM component designed to provide precise tension and support within various John Deere equipment systems. This genuine disk spring, also known as a Belleville washer, measures 40 mm outer diameter, 20 mm inner diameter, and 2 mm thickness, weighing approximately 0.01 kg. It is crucial for maintaining proper function in a wide range of John Deere tractors, cotton pickers, forage harvesters, loaders, graders, dozers, excavators, articulated dump trucks, skidders, feller bunchers, forwarders, and harvesters.