WPW10077881 Dishwasher Rinse Aid Dispenser Cap

Key Features

• Engineered Seal: Equipped with a precision-molded rubber gasket that creates a watertight barrier, preventing rinse aid from leaking into the tub during the wash cycle.
• Twist-and-Lock Design: Features an ergonomic top slot designed for easy opening and closing using a thumb or a coin, ensuring a secure fit without specialized tools.
• High-Temperature Durability: Manufactured from food-grade, heat-stabilized plastic to withstand the thermal stress of high-heat drying and sanitize cycles.
• Chemical Resistance: The polymer construction is specifically formulated to resist degradation from concentrated rinse aid surfactants and harsh detergents.

Replaces / Cross-Reference Part Numbers

• WPW10077881
• W10077881
• PS11748135
• AP6014865
• W10077881VP
• EAP11748135

Compatibility & Fitment

This rinse aid cap is a standard replacement for various 24-inch built-in dishwashers manufactured by Whirlpool. Key compatible brands include:

• Whirlpool: Fits many Gold series and standard models (e.g., WDF520PADM, WDT720PADM).
• KitchenAid: Compatible with many KDT, KDF, and KUDE series units (e.g., KDTE104ESS, KDTM354ESS).
• Maytag: Fits Jetclean and standard MDB series models (e.g., MDB4949SDH).
• Amana & Kenmore: Compatible with select units utilizing the W10077881 dispenser assembly.

When to Replace

• Emptying Rapidly: The rinse aid reservoir requires frequent refilling, or you see blue streaks on the inner door panel, indicating a failed seal.
• Broken Tabs: The plastic locking ears on the underside of the cap have snapped off, preventing the cap from staying locked in place.
• Damaged Gasket: The internal rubber ring is cracked, swollen, or missing, allowing water to enter the rinse aid chamber and dilute the solution.
• Missing Cap: The original cap was lost during a cleaning cycle or accidentally discarded.
• Stripped Drive Slot: The coin slot on top is rounded out, making it difficult to rotate the cap for refilling.

Installation Tips

• Clean the Opening: Before installing the new cap, wipe away any dried rinse aid residue or mineral buildup from the dispenser opening to ensure a clean sealing surface.
• Alignment: Align the two tabs on the underside of the cap with the notches in the dispenser housing.
• Locking: Insert the cap and rotate it clockwise (usually about 1/4 turn) until it stops and the arrow points to the "Locked" position.
• Do Not Overtighten: The cap only needs to be snug to create a seal. Using pliers or excessive force can crack the main dispenser housing.
• Pro-Tip: If the cap is difficult to turn, apply a tiny drop of food-safe mineral oil to the rubber gasket to help it glide into the locked position.