Yes they are. 
K46AC
K46BE
K46AC
K46BE
Most main part are identical, the letter after the number indicate change for specific manufacturer requirement.What normaly goes in these? The K46AC has been split and is missing parts, the other is whole.
Mostly the pump/motor, you can rebuild them for around $200.00 if the pump/motor housing are still good.Sorry, i ment what fails in these