Whirlpool WP99003070 Upper Wash Arm Dishwasher Part

Product Description

The WHIRLPOOL WP99003070 is an upper wash arm assembly finished in dark gray, designed as a direct OEM replacement for residential dishwashers. The wash arm distributes water across the upper rack during the wash and rinse cycles, rotating under water pressure to ensure consistent spray coverage. Measuring 17.62 inches in length and 2.5 inches wide, this arm fits into the upper spray arm mount inside the dishwasher tub. It is typically replaced by appliance technicians or experienced DIYers when spray performance degrades, the arm cracks, or rotation becomes restricted due to wear or mineral buildup.

This upper wash arm is used in residential dishwashers across multiple Whirlpool, Amana, and Crosley model lines. It is suited for units where the upper rack wash arm has sustained physical damage or no longer spins freely. Compatible model numbers are listed below. Installation requires no special tools beyond basic hand tools and takes place inside the dishwasher tub cavity at the upper spray arm connection point.

Key Features

• OEM replacement upper wash arm - maintains original spray pattern and rotation performance
• Dark gray finish matches factory interior on compatible units
• 17.62-inch length provides full upper rack spray coverage
• Direct mount to upper spray arm hub - no modification required
• Compatible across a wide range of Whirlpool-platform dishwasher models

Compatibility

Compatible with the following models: DDB1501AWW, ADB1500AWS1, ADB2500AWQ37, ADB1500AWQ46, ADB1500AWZ10, ADB2500AWB2, ADB1500AWW3, CDU650AWB, ADB2500AWQ2, ADB1500AWB46, ADB3500AWS1, CDB1500AWB, ADB1500AWW1, DWD1500AWB, CDB1500AWW1, ADB2500AWW3, CDB1500AWW3, ADB2500AWW1, CDB1500AWB2, ADB2500AWW37, ADB3500AWB, ADB3500AWS36, ADB1500AWW41, ADB3500AWW0, CDU650AWB37.

Installation Notes

Disconnect power to the dishwasher at the breaker or by unplugging the unit before beginning any service. The upper wash arm typically unclips or unscrews from the upper spray arm hub - consult the unit service manual for the specific retention method on the model being serviced. Inspect the hub and water feed tube for cracks or mineral deposits and clean as needed before installing the replacement arm. Confirm free rotation of the new arm before closing the door and restoring power.