Customer Questions and Answers for Lower Spray Arm Hub by Whirlpool

The Lower Spray Arm Hub is an OEM replacement part for Whirlpool built-in dishwashers. It is a central component that secures the rotating lower wash arm during the wash cycle. 

Causes of a bad lower spray arm hub involve general wear from years of repeated wash cycles. Mineral buildup accumulating inside may also deteriorate connecting surfaces over time.

Symptoms of a compromised hub include: 

• Loose, detached lower wash arm that does not rotate properly
• Mineral deposits or food debris caught in the hub impeding arm movement   
• Excessive noise, clanking sounds, or vibrations emanating from the lower basket
• Poor lower rack cleaning leaving residual food soils after wash cycles

Compatible brands also include KitchenAid, Jenn-Air, and some Kenmore built-in dishwasher models. 

Note: Also Order Spray Arm Seal: WP8268340