Check Valve
CTPA-AL23836 Replacement Part to Fit:  John Deere For Models: 1020, 1120, 2020, 2040, 2120, 2240 S/N 350000->, 2440 S/N 341000->, 2840, 2940, 3120, 4425, 4435, 820, 830, 920  Price:  $17.29  Buyers Club Price:  $15.56