The RE206778 Hydraulic Coupler Conversion Kit is designed to fit various John Deere tractor and UTV models, including the 4020, 4230, 4440, and 4430. This conversion kit has a maximum operating pressure of 3000 PSI and comes with a cartridge connection type. With compatibility spanning a wide range of John Deere models, this aftermarket part is a reliable choice for those needing to upgrade or replace their hydraulic coupler. The kit includes necessary components for a smooth transition, making it a convenient solution for heavy equipment owners.