Fuser Unit JC91-01236A JC91-01235A JC91-01157A JC91-01209A For X3220NR X3280NR X3220 SL-X4220RX SL X4220RX X4250 X4300 Replacement fuser unit compatible with specified printer models.Designed to consistent performance during printing operations.Installs directly into the printer without modifications.Functions as a critical component in the printing process by applying heat and pressure to bond toner to paper.Matches specifications for fit and functionality.Suitable for use in office or home environments where print output is required. This is a compatible aftermarket part.References to brands or models do not imply OEM association.