Genuine OEM Lexmark M3150 Toners
The M3150 uses a separate black-toner cartridge and imaging unit, also called the drum. The drum is a different wear component, so adding fresh toner does not renew it or address a problem with that unit.
Toner Buzz carries genuine Lexmark 24B6186 black toner and the 24B6040 imaging unit for the M3150. Choose the toner cartridge when you need toner, or the imaging unit when that is the component needing attention, rather than treating them as interchangeable supplies.