As a direct replacement for the 3030-601

For contractors performing a York motor replacement

Connecting it to a 115V power source will result in failure to start or insufficient torque for the fan assembly

Use a multimeter to measure resistance across the plug

Nordyne 661020R Orifice 318973-401 As a direct replacement forThe Nordyne 661020R Orifice is a precision engineered natural gas main orifice designed for specific HVAC burner assemblies. Measuring at a . 020 orifice diameter (often identified as #20 drill size), this component is critical for maintaining the correct gas to air ratio within the combustion manifold. As a genuine OEM replacement part, it ensures factory spec performance for Nordyne, Intertherm, and Miller gas furnaces, including high efficiency