The Dishrack Roller with Axle is an OEM part for Whirlpool dishwashers. This component allows the dishwasher's dishrack to glide smoothly in and out, enhancing the ease of loading and unloading dishes. Causes of a bad dishrack roller can include regular wear and tear, damage from heavy loads, or exposure to water and detergent, which can degrade the material over time.