RE519144 Engine Speed Sensor Fits John Deere 4520 4560 ++ TractorsOne New Aftermarket Replacement Magnetic Pick Up Sensor Fits John Deere Industrial Tractor Models: 210LE, 210LJ Fits Forklift: 44JR Fits Utility Tractor: 4720 Fits Swing Machines: 2054, 2554, 3554 Fits Wheel Loaders: 244J, 304J, 324J, 444J, 444K, 524K, 544J, 544K, 624J, 624K, 624KR, 644H, 644J, 644K, 724J, 724K, 744J, 744K, 824J, 824K, 844J, 844K, L512, L514, L524, L528, L534 The model numbers listed are for reference only. Please consult your service