GE Genteq Round Capacitor 35 5 uf MFD 440 Volt Z97F9848 97F9848
This is the ideal replacement when the old capacitor is showing its age, and not a difficult repair for the DIY crowd.  The hardest part was getting the sheet metal cover off and then back on the compressor.  Watch your connections, making sure to get the same wires to the same pins.  They're marked, so it's not hard if you bother to look.  Worked fine, and saved about $160 in repair bill.