Dust Unloader Valve Fits John Deere Tractor 1020 1030 1120 4020 Tractors R45096 All listed models with SN:

All listed models with SN: 1785 & up using 3-5/8" diameter generator pulley

Fits: John Deere 520 530 Tractors

1/8" keyway

570 gas or diesel

you may have to redrill and tap generator housing

Dust Unloader Valve Fits John Deere Tractor 1020 1030 1120 4020 Tractors R45096 All listed models with SN:Quality Aftermarket: Dust Unloader Valve (Vacuator Valve) (For Dry Air Cleaners) Fits: John Deere 820 & 830 3 cyl, 840, 850 Industrial, 1020, 1030, 1120, 1520, 1530, 1630, 2020, 2120, 2030, 2040, 2130, 2150, 2155, 2240, 2550, 2630, 2640, 2750, 2755, 2840, 2940, 2950, 4000, 4020 SN: 201000 & up, 4320, 4640, 4650, 4840, 4850, 5020, 6030 Tractors Specifications Fits 3"" diameter pipe Measure before purchasing Replacement Numbers R45096, T23262, T23263,