Fuser Maintenance Kit compatible with MX-2310, 2610, 2615, 2640, 3640, 4140, 4110, 4111, 5110, 5111, 4112, 5112 models.Includes components required for fuser unit maintenance and replacement.Designed to support consistent print performance and during servicing.Part numbers: NBLTH0567FCZ1, NROLI1863FCZZ. Disclaimer of Affiliation: This is an aftermarket component.Brand and model mentions are for illustrative compatibility only.