These hydraulic grade o-rings fit the original hydraulic couplers on John Deere 120 140 300 312 314 316 317 318 322 330 332 400 420 430 Garden Tractors, all years.
These o-rings fit the PIONEER 4050 2P hydraulic couplers. That number is stamped on your coupler.
If your coupler leaks while your implement is connected, you may only need to replace the o-ring. Why buy a new set of couplers when only the o-rings are leaking?
These o-rings are the correct hydraulic grade V90 Black Viton.
