A lower stud and roller assembly is a feature included in dishwashers. The primary function of this piece is to allow the dishwasher rack to slide in and out of the machine smoothly. When the lower stud and roller assembly is broken or missing, a replacement part is necessary to continue the efficient use of the appliance.If the lower dishrack in the dishwasher will no longer slide in and out easily, it's an indication that there is a problem with the lower stud and roller assembly. It's a simple repair to complete. Wear gloves and disconnect the appliance before starting. Slide the dishwasher rack completely out to gain access to the lower stud and roller assembly. Secure in place, and slide the rack back into position.This lower stud and roller assembly is an authentic OEM replacement part. It is sourced by the manufacturer. The component is sold as an individual unit. The lower stud and roller assembly is made of high-quality, durable materials. The part is compatible with several models of dishwashers. The piece can be installed in General Electric, Hotpoint, and RCA brand appliances.Part Number WD12X10178 (AP3794560) replaces 1088531, AH958980, EA958980, PS958980.