KitchenAid Washer/Dryer Combo Model KELC500TPL1 Drum Roller

The drum support roller kit, 349241T. If the dryer is making a rumbling or knocking noise the rollers may be worn out causing the drum not to turn smoothly.

OEM Part - Manufacturer #349241T

The drum rollers and drum roller axles often wear out at the same time. If the drum roller axles are worn out, replace them along with the drum rollers.