When performing a natural gas to LP conversion or replacing a clogged burner tip

This OEM knob is designed for a tight friction fit to prevent control drift

and 3003 series wall furnaces

Utilizing high-grade elastomers

professional repair that matches original equipment specifications

Nordyne 626343R Rollout Switch When performing a natural gasThe Nordyne 626343R Rollout Switch is a critical safety component designed for furnace flame rollout protection. This factory authorized OEM replacement part is rated at 300F and utilizes a Manual Reset SPST (Single Pole Single Throw) configuration. When combustion irregularities occur, such as a cracked heat exchanger or flue blockage, the switch detects excessive heat near the burner assembly and opens the circuit to shut down the heating cycle.