Product review (5 stars): When all you need is the water pump motor
When the pump fails, most parts stores and internet sites will try to sell you the entire assembly.  But you probably only need a new motor.  Some sites won't even mention that this is an option.  Knowing it will save you 50%.

The motor attaches to the pump assembly with exactly 3 screws; not big deal.  It's an easy job if you've already removed the water pump assembly anyway.

The part I received was an exact factory match, new in box.  Also, the part arrived sooner than promised.

That's as good as it gets.