ColorKing LC421XL compatible ink cartridges (LC421/LC421XL) for Brother MFC/DCP printers
Product description
What these cartridges are for
If your Brother printer uses LC421XL, the ColorKing LC421XL compatible ink cartridges are aimed at keeping day-to-day printing running without constantly swapping cartridges. On paper, they’re designed to work with a listed set of Brother MFC and DCP models (including the MFC-J1010DW and DCP-J1050DW families), while promising smooth functionality and consistent output.
Where this product tends to make sense is simple: you want a replacement cartridge option that focuses on convenience (easy installation) and longer-lasting yields, especially if you print regularly at home, in a small office, or at school.
Key takeaways (worth noting before you buy)
The headline claims here revolve around yield and print reliability. ColorKing states 500 pages for the LC421XL black cartridge and 500 pages for the LC421XL colour cartridge at 5% coverage on A4 paper, plus “150% more pages” compared with the standard LC421 capacity. That could be a big deal if you’re tired of frequent cartridge changes.
Still, it’s worth keeping expectations grounded: page yield estimates depend heavily on your document mix (text-heavy vs. graphics), how often you print colour, and your printer’s own behaviour. If you mostly print small amounts, the practical difference may feel smaller than the marketing numbers.
It’s also “compatible” rather than original, so if you’re the type of buyer who wants the strictest ecosystem fit only from the manufacturer, you may prefer to stick with official consumables.
Where it shines in everyday use
The quick swap claim is one of the more convincing parts of the description: the cartridges come with an installation guide and are said to replace “in 5 seconds”. In real terms, that matters if you’ve ever had a printer that’s down for half an hour because you’re waiting for the next cartridge to slot in.
Example: imagine you’ve got a week of home-school worksheets to print, plus a few colour handouts. When a cartridge runs low, you’re usually not trying to troubleshoot—just get the printer back online quickly. These are positioned for that “replace and carry on” workflow.
On quality, ColorKing claims vibrant colours and durability, including a five-layer filtration process, and says the cartridges are made to resist drying. You should treat this as a promise of behaviour, not a guarantee for every print scenario, but it points to a focus on stability rather than just low-cost ink.
Pros
- Designed specifically as a replacement for Brother printers listed as using LC421/LC421XL cartridges.
- Claimed high page yield (500 pages per black/colour at 5% A4 coverage) to reduce how often you replace cartridges.
- Easy installation is emphasised, including an installation guide.
- Quality control and packaging are mentioned (tested before leaving the factory, packaging aims to prevent damage/leaks).
Tech specs
- Name: LC421XL Ink Cartridges (compatible replacements)
- Type: Ink cartridges
- Compatibility (as stated): Brother LC421 / LC421XL for Brother DCP J1050DW, DCP J1140DW, DCP-J1050DW, DCP-J1140DW, MFC J1010DW, MFC-J1010DW, MFC-J1010DW, MFC J1800DW / DCP-J1800DW (models listed in the product description)
- Black page yield (claimed): 500 pages per LC421XL black cartridge (5% coverage on A4)
- Colour page yield (claimed): 500 pages per LC421XL colour cartridge (5% coverage on A4)
What to check before you commit
Compatibility is the obvious checklist item. The description lists multiple Brother DCP/MFC model names, but it’s still smart to verify your exact model number before buying—printers can look similar while using different cartridge families.
Also, think about whether your printing is mostly black-and-white or colour. Even with the same claimed yield, your actual run-time with colour cartridges will depend on how much colour coverage you use.
Finally, consider the “compatible” factor: if your printer is sensitive to ink types or you’ve had past issues with third-party cartridges drying up or giving inconsistent performance, it’s a gamble you might want to avoid.
Is it worth it?
A solid pick if you have one of the Brother models listed as using LC421/LC421XL cartridges and you want a replacement that leans into higher yield and fast installation. If you print often enough that cartridge swaps are a real hassle, the claimed 500-page yields and the “150% more pages” positioning are exactly the sort of reason people look at this category.
It’s not the best choice if you need the most cautious, manufacturer-led approach, or if you rarely print (in which case any potential risk around ink drying and storage becomes more relevant than the theoretical yield).
If you’re deciding based on value-for-money, it’s worth comparing this against alternatives in the same LC421XL-compatible family, focusing on page-yield claims and how often you realistically print colour.
Quick FAQ
FAQ
Are these cartridges original Brother or compatible replacements?
The listing describes them as compatible replacements for Brother LC421/LC421XL.
Which Brother models are they listed for?
They’re stated as replacement cartridges for several Brother DCP and MFC models, including MFC-J1010DW and DCP-J1050DW/J1140DW, plus others listed in the product description.
How many pages do they claim to print?
ColorKing claims 500 pages for the LC421XL black cartridge and 500 pages for the LC421XL colour cartridge, based on 5% coverage on A4 paper.
Do they dry out?
The description says they’re made to be non-drying, but like any cartridge, real-world performance depends on print frequency and storage.
Is installation straightforward?
The listing emphasises an installation guide and says replacement can be done in about 5 seconds.