HP M0H51A X4E75A GT51/GT52 Kleur Cartridge

Engineered to restore factory-fresh print quality to HP's acclaimed Ink Tank and DeskJet GT platforms, this printhead cartridge set pairs the HP M0H51A Black GT Printhead with the HP M0H50A Tri-color GT Printhead, with the X4E75A listed as a cross-compatible black printhead variant used across related HP Smart Tank hardware. Unlike disposable ink cartridges, these are genuine printhead assemblies that snap directly into the ink tank chassis, meaning the nozzle architecture itself is replaced rather than simply refilled — the most effective way to eliminate banding, misfires, and faded output once the original heads reach end of life.

The M0H51A module uses pigment-based black ink delivered via HP's proven Thermal Inkjet (TIJ 2.x) technology, producing dense, smudge-resistant text ideal for everyday documents, invoices, and office correspondence. The ink is pigment-based with the print cartridge/bottle color being Black, built on HP Thermal Inkjet print technology. Its tri-color counterpart, the M0H50A, is formulated for vivid composite color reproduction across photos and graphics, and together the pair is rated to deliver roughly 8,000 pages of color output before a supplementary black bottle is needed. An additional black ink bottle is required to print 8,000 color test pages, reflecting HP's high-yield ink tank design philosophy.

Compatibility spans HP's most popular continuous-ink printers: HP DeskJet GT5810 GT5820 GT5822, HP Ink Tank 300 series (310 311 315 316 318 319), Ink Tank 400 series (410 411 415 416 418 419), and HP Smart Tank 450 series (450, 455, 457). The X4E75A reference point extends this family further, as it is documented as a Genuine HP X4E75A Black Inktank Printhead for Smart Tank/Plus 500 510 530 550 610 devices, making this listing a useful cross-reference for technicians servicing mixed printer fleets.

Build quality follows HP's standard environmental tolerances, with HP Thermal Inkjet print technology and an operating temperature range of 15 to 30°C, non-operating humidity of 20 to 80% RH, and storage tolerance down to -40°C, ensuring stable performance in varied office and warehouse environments. Each printhead is compact and lightweight — the black unit measures roughly 116 x 36 x 101 mm and weighs approximately 50 g — enabling tool-free, snap-in installation without recalibration downtime. For businesses and resellers supporting GT51/GT52-based ink tank printers, this set offers a direct, reliable path to restoring like-new print performance.