Product review (1 stars): LG fridge listed J513-00012P and J513-00012Z as the Start Capacitors ...
LG fridge listed J513-00012P and J513-00012Z as the Start Capacitors for my model.  the 00012P is rated at 160VAC 100mfd
Could not find specs on the 00012Z part, but finally from Sears I found that the 00012Z is 180VAC 100mfd which matches the one that came out of my fridge.
I will be returning this one.