Product review (5 stars): Perfect replacement for my Subzero 550
Perfect replacement for my Subzero 550.  The old unit was leaking, causing the ice in the tray to freeze into huge sheets.  As the directions indicate, you'll need to save the brackets from your old unit.  The ice bucket arm was different (no plastic piece), but I just swapped it with the old one.  Easily installed, now have actual ice cubes again.