Product review (5 stars): the job is easy. The unit was a drop in fit
Don't fall for those cheap Aftermarket look-alikes, go with the Genuine OEM Replacement.  Used on a Kitchenaid KSCS25INSS Side by Side.  Installation took 20 minutes and the only difficult part was removing the Flapper Door that hangs from the ceiling of the Freezer, as it is a bit awkward to hold the door up while removing the screws. Once you remove the Flapper Door, there is 1 screw holding the unit in place at the Right Rear underneath the Ice Maker that also holds the Wire Harness Cover in place, remove the wire harness cover, and the unit slides out.  Look carefully at the Wire Harness Connector as it has a locking tab on the side that must be opened to seperate the Ice Maker connector from the Freezer Connector.  Once the Harness is disconnected, there are 3 more screws holding the bottom protective cover to the Ice Maker, for a total of 6 screws to complete the entire job.  If you have a 1/4 inch drive socket set to remove the screws, the job is easy.  The unit was a drop in fit, and started making Ice in about 1 hour.