York 1NP0459 Natural To LP Kit 30067439-890 This 24-inch diameter fan blade

This 24-inch diameter fan blade features a 4-blade aluminum construction and is indexed for counter-clockwise (CCW) rotation

When fins are soot-covered

the Reznor 61146 is specifically orificed and designed for liquid propane (LP gas)

while 068U2205 is the commonly used industry shorthand for the same TUA element

you should specify the FM554A model

York 1NP0459 Natural To LP Kit 30067439-890 This 24-inch diameter fan bladeThe York 1NP0459 LP conversion kit is the critical OEM component required for field converting York, Luxaire, and Coleman gas fired furnaces from natural gas to liquid propane. This kit serves as the direct 1NP0442 replacement, ensuring that the burner manifold pressure and orifice sizing align with the higher BTU density of propane fuel. Proper implementation of this natural to LP conversion is essential for maintaining optimal combustion parameters