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PTO Shaft Oil seal
John Deere Tractor 3020, 4020, 4230, 4430
R33340, CR31139
Seal 3.125" ID - 4" OD
Not for models with 1000 RPM that may require PTO Seal AT344T (1.500" ID x 2.380" OD)
To avoid returns, please positively identify parts required for your model before ordering.