The John Deere DC40185 Cap is an authentic OEM replacement part designed for a vast array of John Deere equipment, including various tractors, combines, cotton harvesters, forage harvesters, sprayers, windrowers, crawler dozers, excavators, loaders, motor graders, skid steer loaders, wheel loaders, articulated dump trucks, compact track loaders, feller bunchers, forwarders, harvesters, knuckleboom loaders, log loaders, skidders, and track harvesters. This genuine cap ensures proper fit and function, maintaining the integrity of your machinery's systems. Refer to your equipment's parts catalog for specific application details.