Upper Fuser Heat Roller Compatible for AR-MX503 MX503 503 453 363 4528 Fuser Roller Copier Spare Parts 1pcs This fuser heat roller is designed for compatibility with AR-MX503, MX503, 503, 453, 363, and 4528 copier models.It serves as a replacement part for the fuser unit, facilitating proper heat transfer during the printing process.The roller is intended for use in maintaining consistent print quality and in compatible devices.This listing includes one fuser heat roller suitable for installation in applicable machines.