Dennis K Key West , FL February 17, 2015 Appliance: KitchenAid Undercounter Dishwasher KUDS30IXBT4 Kitchenaid Dishwasher Kuds30ixbt4: Missing rinse cap in kitchenaid dishwasher. How to replace Rinse Aid Cap. Called and ordered the part from the model number. The first part was the wrong one for my dishwasher. I called and they sent the right one with fast delivery. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes