Reference Guide

OEM Ink Part-Number Cross-Reference

Know your OEM cartridge number but not which compatible cartridge to buy? This cross-reference maps common OEM part numbers to the correct USA Ink Supply compatible cartridge family. These are compatible replacements, not OEM-branded cartridges.

M5 250mL family reference (by color)

Our high-capacity 250mL compatible tanks use these color references:

Color	M5 reference
Black (K)	M5K250
Cyan (C)	M5C250
Magenta (M)	M5M250
Yellow (Y)	M5Y250

OEM part-number cross-reference by brand and color

Verified color-by-color cross-reference. Each OEM cartridge number maps to the matching USA Ink Supply compatible 250mL tank.

Formax ColorMax

OEM part number	Color	USA Ink Supply replacement
CJ-24	Black	Formax ColorMax Compatible Black 250mL
CJ-21	Cyan	Formax ColorMax Compatible Cyan 250mL
CJ-23	Magenta	Formax ColorMax Compatible Magenta 250mL
CJ-22	Yellow	Formax ColorMax Compatible Yellow 250mL

Shop by model:

AstroJet

OEM part number	Color	USA Ink Supply replacement
123-2412	Black	AstroJet Compatible Black 250mL
123-2413	Cyan	AstroJet Compatible Cyan 250mL
123-2414	Magenta	AstroJet Compatible Magenta 250mL
123-2415	Yellow	AstroJet Compatible Yellow 250mL

Shop by model:

We only publish verified references. Where a specific OEM number's exact color assignment isn't confirmed, we list the OEM set at the family level rather than guess — so you're always directed to the correct cartridge without misleading color claims.

Prefer to search by printer model?

If you know your machine rather than the cartridge number, use the printer ink finder or the M5 250mL compatible printer guide.

Frequently Asked Questions

What does OEM part number 123-2412 replace? +

123-2412 is the AstroJet Black cartridge. USA Ink Supply's AstroJet compatible Black 250mL tank is the replacement. The full set: 123-2412 Black, 123-2413 Cyan, 123-2414 Magenta, 123-2415 Yellow.

What is CJ-21 (and CJ-22, CJ-23, CJ-24)? +

These are the Formax ColorMax OEM cartridge part numbers by color: CJ-21 Cyan, CJ-22 Yellow, CJ-23 Magenta, CJ-24 Black. USA Ink Supply's Formax ColorMax compatible tanks (also fitting the ColorMaxLP3) are the replacements.

How do I find the right cartridge if I only know my OEM number? +

Match your OEM number to its brand in the table below, then open that brand's ink page and choose your color and pack size. If you're unsure, the printer ink finder matches by machine model instead.

Are these OEM cartridges? +

No. USA Ink Supply cartridges are compatible replacements that cross-reference the listed OEM part numbers. They are not OEM-branded, and USA Ink Supply is not affiliated with the manufacturers. OEM part numbers are used only to identify compatibility.