Product review (3 stars): Part is OEM, but it's hard to get into place.
More of a pain to install than the videos I watched. The rubber sleeve that goes over the existing drain vent is tough to get into place, it really fought me and it fought me more when I tried to slide the new "S" trap over the sleeve. I tried for 5 minutes each to slide each piece into place and I finally used a very small amount of plumbers grease and that worked.

Time will tell it this fixes the issues with the OEM sticky "duckbill" rubber sleeve. Disappointed in Whirlpool/Kitchenaid - this should be a warranty item because everywhere I look on the web, it seems to take exactly 5 years for the OEM valves to fail. It was 13 days beyond the extended warranty I bought. Lesson here is next time I avoid Whirlpool/Kitchenaid products.