HP 80 Black Pigment Ink Cartridge (C4871A) – Compatible Replacement | Castle InkThe OEM C4871A compatible black ink cartridge from Castle Ink is a direct drop in replacement for the OEM OEM C4871A, built for OEM equivalent printing performance. Its an economical way to keep your OEM printer in service without paying OEM prices, while still meeting the print quality expectations of a business or photo grade workflow. Black is the workhorse of the set the cartridge most owners replace first and most often. Castle Inks C4871A is