OKI 44723603 Plate Assy.-Side-L is a left-side plate assembly listed in the parts catalog for the MC873 series. It is identified as a frame assembly component, making it a specific replacement part for service of the listed machines.
The catalog lists it for the OKI ES8473 MFP, MC873 and MC873dn. Its left-side designation distinguishes it from the separately listed right-side plate assembly. The part reference 44723603 identifies this particular component.