This kit includes 2 sets of developer bushings compatible with MP 2554, MP 2555, MP 3554, MP 4054, MP 5054, MP 6054, and MP 3054 printer models.The set contains components D202-3123, D202-3121, D202-3119, and D202-3125, designed for use in both developer and drum units.Made from engineering-grade plastic, these bushings are built to withstand standard operational demands, including thermal variations during printing.They are engineered for direct-fit replacement, requiring no modifications or professional tools for installation.This product supports consistent printer function and is intended for standard maintenance and part replacement in the listed compatible models.