HP LaserJet M604dn Enterprise Parts Catalog page 1. Covers 2. Internal components (1 of 3) 3. Internal components (2 of 3) 4. Internal components (3 of 3) 5. Power supply assembly 6. Multi-purpose (Tray 1) pickup assembly 7. Duplexer 8. Envelope feeder covers and panels 9. Envelope feeder internal components (1 of 2) 10. Envelope feeder internal components (2 of 2) 11. 500-sheet feeder covers 12. 500-sheet feeder main body 13. 1,500-sheet feeder covers and panels 14. 1,500-sheet feeder main body (1 of 2) 15. 1,500-sheet feeder main body (2 of 2) 16. 1,500-sheet feeder paper pickup assembly 17. 5-bin mailbox covers and panels 18. 5-bin mailbox main body (1 of 2) 19. 5-bin mailbox main body (2 of 2) 20. Stacker and stapler/stacker covers and panels 21. Stapler/stacker main body 22. Stacker main body 23. Stapler/stacker middle assembly (1 of 2) 24. Stapler/stacker middle assembly (2 of 2) 25. Stacker middle assembly (1 of 2) 26. Stacker middle assembly (2 of 2) All About this machine Parts Code: Envelope feeder internal components (2 of 2) We do not sell these spare parts!We only help you to create your parts list for request from your suppliers. Ref. Parts Code Description Remark 1 RK2-2162-000CN Motor, stepping, DC24V (envelope feeder) 2 RM2-8651-000CN PCA, envelope controller (envelope feeder) 3 RM1-5222-000CN Joint shaft assembly (envelope feeder)