John Deere 4230 4430 4440 4640 + Tractors Air Conditioner Compressor Parts Core. The John Deere part number of this compressor is SE501457. This compressor is locked up and being sold as a parts core. It will need disassembled or rebuilt. It’ll fit a 8820 combine, 2280 2320 2420 windrowers, 4030 4230 4430 4630 4040 4240 4440 4640 4840 tractors. Thanks