This document provides a list of essential components and their Katun part numbers for Canon iR Advance C5030/C5035 MFPs. It includes Katun toner cartridges for black, cyan, magenta, and yellow that are alternatives to the Canon OEM parts. Also listed are Katun replacements for the feed/separation roller, fuser film kit, OPC drum, and several paper pickup and separation rollers. The document notes that Katun offers quality alternatives to OEM parts at reduced costs and convenience for the customer.