Canon GPR-42/43 4051/4045 176K Yield Drum Unit 4793B004AA Canon Drum Unit - Black, 4793B004AA Please ensure that your original part number matches this exactly, or check with the manufactuer for compatiblity. Customers are responsible for compatiblity. This part is guaranteed to be fully functional, original and authentic. Canon Drum Unit - Black, 4793B004AA