HP 57A (CF257A) Compatible Imaging Drum Unit with Developer for LaserJet MFP M436, M438, M440, M442, M443

Compatible Imaging Drum Unit with Developer for HP 57A (CF257A) — Yield: 80,000 Pages

Maximise uptime and print quality with the PRM Compatible Imaging Drum Unit with Developer for HP 57A. This ultra-high-yield drum unit delivers up to 80,000 pages — designed for HP's A3-capable LaserJet MFP copier series used in busy offices, print shops, and commercial environments.

Looking for an HP M438dn drum unit or HP M436nda imaging drum replacement? The HP 57A (CF257A) is the correct imaging drum unit for all HP LaserJet MFP M433, M436, M438, M440, M442, M443, and M42525 series printers listed below.

What's Inside — Drum Unit + Developer in One Unit:
Unlike a standard drum, the HP 57A comes pre-loaded with developer beads. The developer works together with the toner to form the image on the drum before it transfers to paper. When you replace the HP 57A, you get both a fresh OPC drum and fresh developer — restoring your printer to like-new print quality in one step.

Imaging Drum UNit vs Toner Cartridge — What's the Difference?
Your HP M436/M438/M440 printer uses two separate consumables: a toner cartridge (HP 335A or 335X) that holds the toner powder, and an imaging drum (HP 57A) that transfers the image onto paper. The drum lasts far longer than the toner — up to 80,000 pages vs 7,400–13,700 pages for the toner. You only need to replace the drum unit when you see faded prints, grey backgrounds, streaks, spots, or ghosting that don't go away after replacing the toner cartridge.

1. Ultra-High 80,000-Page Yield: One drum unit outlasts 5–10 toner cartridges. Minimal maintenance, maximum uptime for high-volume A3 printing environments.

2. Pre-Loaded Developer: Fresh developer beads included — works together with HP 335A/335X toner to deliver consistent image density and sharp detail from the first page to the last.

3. Restore Print Quality: Faded prints? Grey backgrounds? Vertical streaks? Black spots? Ghosting? If replacing the toner cartridge doesn't fix it — the drum unit is the answer. A fresh drum restores your printer to like-new output.

4. 50% Cost Savings: PRM compatible drum units deliver the same 80,000-page performance at a fraction of the original HP 57A price. Major savings for businesses running these A3 copier-class machines.

5. Built for A3 Copier-Class Machines: These HP LaserJet MFPs handle heavy daily volumes across A3 and A4. Our drum unit is engineered to perform reliably under continuous high-duty cycles with no quality degradation.

Compatible Printers:
HP: LaserJet MFP M433a, M436n, M436dn, M436nda, M438n, M438dn, M438nda, M440dn, M440nda, M442dn, M443nda, M42523d, M42525n, M42525nd, M42625dn

Also known as: HP 57A, CF257A, HP 57A Imaging Drum, HP 57A Drum Unit with Developer, HP M436 Drum Unit, HP M438 Drum