Whirlpool Dishwasher Rinse-aid dispenser cap WP3378134, Replaces 3378134, 3369512, 3369200, 3369155

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✅ Cross Reference Information

Common Symptoms

• Rinse aid or water leaking from the dispenser area
• Dishwasher not dispensing rinse aid correctly
• Poor drying performance associated with a damaged or missing dispenser cap
• Cap will not stay threaded or seated properly

Check Before Replacing

• Inspect the cap for cracks, melting, distortion, or missing sections.
• Check that the cap threads into the dispenser and remains securely seated.
• Inspect for rinse-aid leakage around the cap after filling the dispenser.
• Confirm that the dispenser opening and cap are free of residue that prevents proper seating.

Pro Tip

Part Details

Installation Notes

• Disconnect appliance power before servicing.
• Open the dishwasher door and access the dispenser cap from the inner door.
• Twist the existing cap out and install the replacement by threading it into place.
• No hand tools are documented as required for this replacement.

Verified Compatible Models

110.723120, 110.773811, 110.773812, 110.773813, 110.773881, 110.773882, 110.773883, 657.15755791, 665.13402K900, 665.13402K901, 665.13409K900, 665.13409K901, 665.13442K900, 665.13442K901, 665.17722K900, 66513443K900, DP920QWDB0, DP920QWDB2, DU5000XW0, DU840CWDQ0, DU8500XX0, DU8550XX0, DU8960XY1, DU900PCDQ6, DU920QWDB3, DU9400XB1, DU940QWDZ5, LUD2100X3, RUD1000DB1, TUD3000Y4, WU4500B1

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.