Can't find these Solenoids online, want to buy these parts

I have a Honda Accord 2002 LX. I took it to my transmission mechanic and he said the code was P0780 (Shift malfunction). I need to replace Pressure Control Solenoid A and B. I want to buy these parts myself to save money but I can not find it online. I looked through autozone, O'reilly, and google and can not find the parts. Does anyone know have a website they know where to find these parts? Any help would be appreciated, thank you