903406 Nordyne M1MB077 BRNR assembly
The 903406 is the genuine Nordyne M1MB077 burner assembly designed for natural-gas furnaces and packaged units. This fully assembled module includes the gas manifold, burner tubes, pilot mounting bracket, flame-sensor mounting pad, gaskets, and all necessary hardware. Factory-assembled and leak-tested, it ensures precise fuel delivery, reliable ignition, and optimal combustion throughout thousands of heat cycles.
