The molex connectors were never available as a spare part, it was part of the pump (male end) and the driver (female socket). The driver is not available any more as a new part, motor blocks are completely unavailable. I can say for sure that the connector is not a genuine Molex, so I know the off the shelf Molex are just different enough to not fit, My best guess is it is a German equivalent, likely from Wago. We do have used working drivers for $40, but a new driver was $110 and we can upgrade you to a 6105 for $180, which is cheaper than a driver and motor block would have been.