This drum unit is compatible with imageRUNNER ADVANCE 400, 500, IR1730i, IR1740i, and IR1750i series printers.It replaces OEM part numbers NPG-55, GPR-39, and EXV-37.The unit supports a page yield of up to 70, 000 pages under standard printing conditions and functions as a key component in the imaging process, facilitating toner transfer and image formation.Designed for performance and ease of installation in the designated printer models.