This should do the trick!
IIRC, this is the correct part number for the constant rinse for the KD18 series.
Notice, it doesn't look anything like your old one. Less likely to get broken, but you still need to be careful loading the middle set of tines on the top rack.
There are a few others along with this listing.
Good Luck.
Steve
http://www.ebay.com/itm/WHIRLPOOL-4...76d71405a9b851ec9ff786711&pid=100005&rk=2&rkt
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