Turntable coupler broke

I took the part out of the box and handed it to my wife and said "here ya go hun, go put this under the glass turntable in the microwave. You'll know it's installed when you hear it click down" She yelled back, "easy as pie" - - - Humm.. I can't make a pie. Fortunately the old one was in one piece as the side just split so it slid off very easy. The new one just snapped in place.