The Whirlpool WPW10491331 is a Genuine OEM lower dishwasher spray arm that rotates during wash and rinse cycles to distribute pressurized water across the lower rack.
A cracked, warped, obstructed or damaged spray arm can reduce wash coverage, create unusual contact noises or interfere with normal rotation.
This service part supersedes numerous earlier Whirlpool lower spray-arm assemblies used across several Whirlpool-built dishwasher brands.
What This Listing Includes: One Whirlpool WPW10491331 lower dishwasher spray arm assembly.
Possible Compatible Models Include: WDT730PAHW0; WDT730PAHZ0; ADB1500ADS1; WDF560SAFT1; WDF520PADM6; WDT780SAEM1
Compatibility Note: Lower spray arms are platform-specific. Verify the complete dishwasher model and inspect the original spray-arm/diverter configuration before ordering.
Important Safety Note: Disconnect dishwasher electrical power before service and allow hot internal components to cool.
Installation Note: Seat the lower spray arm on the original support exactly as designed and confirm that it rotates freely without contacting racks, filters or heating components.