Got a leak in the hydraulic system of your classic John Deere tractor? This load control seal (part number AR27371 or AR27371-A) is a common replacement part for models like the 2510, 2520, 3010, 3020, and 4030. The load control is part of the three-point hitch hydraulic system, and when this seal goes bad, you'll lose hydraulic fluid and the hitch won't hold position properly. Replacing it is a standard maintenance repair to keep your tractor's hydraulics working strong. This is an aftermarket seal from Reliable Aftermarket Parts, made to OEM specifications. Always make sure to match the part number to your tractor's service manual or the old seal. Stop the leak and get back to work with this essential seal.