4163242 Spacer; Wheel Aerating Wheel Spacer 521814 Fits Ryan 544317 Renovaire

NEW OLD STOCK, light oxidation may be present.4163242, Spacer; Wheel, Aerating Wheel Spacer, 521814, Fits Ryan 544317 Renovaire, 4163242, Spacer; Wheel Assembly, Aerating Wheel Spacer,  Ryan Renovaire, Measures approx 1.44″ OD x 1.3″ ID x 1.4″ long, with window, C6D4