Compatible with main drive assembly for MP 3554 5055 2555 4054 6054 4055 Fuser developer drive unit Universal fit design Installs directly into designated models Designed to work with existing system components Smooth integration with drive mechanism construction for reliable performance Engineered for consistent in supported devices Replacement part for drive assembly systems Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.