CS-2551CI

The CS-2551CI is a color multifunction copier sold under Copystar, Kyocera's United States brand — its Kyocera-badged twin is the TASKalfa 2551ci. It prints from the four-cartridge TK-8327 family: black is TK-8327K, part number 1T02NP0US0; cyan is TK-8327C (1T02NPCUS0); magenta is TK-8327M (1T02NPBUS0); and yellow is TK-8327Y (1T02NPAUS0). This page stocks all four singles plus three sets, so you can replace a single color or restock the whole machine in one order.

On a color machine the four cartridges live separate lives. Black does most of the work on everyday documents and usually empties first, while the three colors are spent on the pages that need them — a logo here, a chart there. The shelf below is arranged around that pattern: singles for the color that just ran out, a four color set for a full restock, and a five color set that adds a second black for offices whose color work comes with heavy black coverage alongside it. Both set grades are here too, standard and premium, built from the same four cartridge codes.

Toner Cartridges for CS-2551CI

Cartridge	Color	Type	Page Yield
TK-8327K (1T02NP0US0) Toner Cartridge Black	Black	Toner cartridge	See product page
TK-8327C (1T02NPCUS0) Toner Cartridge Cyan	Cyan	Toner cartridge	See product page
TK-8327M (1T02NPBUS0) Toner Cartridge Magenta	Magenta	Toner cartridge	See product page
TK-8327Y (1T02NPAUS0) Toner Cartridge Yellow	Yellow	Toner cartridge	See product page
TK-8327 Toner Cartridges 4 Color Set	Black, Cyan, Magenta, Yellow	Toner cartridges, 4 color set	See product page
TK-8327 Premium Quality Toner Cartridges 4 Color Set	Black, Cyan, Magenta, Yellow	Toner cartridges, 4 color set	See product page
TK-8327 Toner Cartridges 2 Black and CMY 5 Color Set	Black, Cyan, Magenta, Yellow	Toner cartridges, 5 color set	See product page

Which cartridge should you buy?

Start with what the machine is asking for. If one color has run down, a single cartridge in that color is the whole answer — there is no need to touch the other three. If several colors are low together, or the copier is new to your office and you want the shelf stocked, the four color set replaces everything at once and keeps the four cartridges at the same age. The five color set exists for black-heavy color work: it carries a second black alongside the color trio, matching the way these machines actually consume toner. The premium set holds the same four cartridges in the premium-quality grade. Every listing is a compatible cartridge covered by a one-year warranty and one-year returns.

Chip, toner and everyday use

Each TK-8327 cartridge is keyed to its own color position, and the copier reads it as soon as it seats — a cartridge that will not slide home is usually in the wrong slot, so compare the letter at the end of the code with the label inside the machine. Pull the sealing strip straight out before installing, and avoid touching the shiny drum surface on the underside. Color cartridges keep best in their boxes, upright and out of direct light. If one color starts banding while the others print cleanly, that cartridge is the one to rock gently side to side or replace; there is no need to disturb the rest.

Frequently Asked Questions

What does the 5 color set hold that the 4 color set does not?

A second black cartridge. Both sets carry one each of cyan, magenta and yellow; the five color set doubles the black because black is the cartridge a color machine consumes fastest.

The cartridge I pulled out reads 1T02NPCUS0 — which color is it?

That is the cyan. Order the TK-8327C single, which is the same cartridge under its family name. The other part numbers end in 0US0 for black, BUS0 for magenta and AUS0 for yellow.

Can I replace just the yellow cartridge on its own?

Yes. All four colors are sold as singles on this page, and each cartridge is changed independently of the others. A low yellow never forces you to replace a healthy black, cyan or magenta.

Which other machines take the TK-8327K black cartridge?

The black cartridge is shared across a small family: the Kyocera-badged TASKalfa 2551ci and the ECOSYS M5526cdw and ECOSYS P5026cdw printers listed below take the same black toner.