Compatible Black 378XL High Capacity Epson Ink Cartridge - (T3791 Squirrel)
Save £7.91 compared to Epson
Compatible Black 378XL High Capacity Epson Ink Cartridge - (T3791 Squirrel)
Save £7.91 compared to Epson
- 1x500pages
Shipped next working-day
In stock
- Premium brand ink cartridge
Looking for original cartridges?
Original Epson available for £18.38 inc VATSwitch & Save Why switch to Cartridge Save own-brand?
- Save up to 50% on your printing costs, forever!
- Guaranteed to be a like-for-like alternative to the originals in every way:
Printout quality. Number of prints. Reliability. Printer compatibility. EVERYTHING. - By far the best selling third-party printer cartridge in the UK.
- Full 3-year warranty
REMEMBER... all third-party printer cartridges are NOT the same!

Our cartridges won’t damage your printer—guaranteed
Some people worry that own-brand cartridges might damage their printers. We know from experience that ours don’t.
To reassure you, we guarantee that we’ll repair or replace your printer—for free—in the unlikely event that it gets damaged by our own-brand cartridge. This is regardless of how old your printer is. We can afford to offer this as problems are almost unheard of.
Your printer warranty is safe
Some people whose printers are less than a year old worry that an own-brand cartridge might invalidate the manufacturer’s warranty. This isn’t true. By law, manufacturers aren’t allowed to invalidate your warranty if you use own-brand cartridges. If something does go wrong and our own-brand cartridges are to blame, we’ll take over the manufacturer’s warranty, offer you phone support and repair or replace your printer if needed.
In summary there’s zero risk in using our own-brand cartridges.

Reviews '%20/%3e%3cpath%20d='M%205.454545454545455,0.6060606060606061,1.8181818181818181,12.000000000000002,10.90909090909091,4.7272727272727275,0,4.7272727272727275,9.090909090909092,12.000000000000002z'%20fill='%23d8d8d8'%20transform='translate(24,0)'%20/%3e%3cpath%20d='M%205.454545454545455,0.6060606060606061,1.8181818181818181,12.000000000000002,10.90909090909091,4.7272727272727275,0,4.7272727272727275,9.090909090909092,12.000000000000002z'%20fill='%23d8d8d8'%20transform='translate(36,0)'%20/%3e%3cpath%20d='M%205.454545454545455,0.6060606060606061,1.8181818181818181,12.000000000000002,10.90909090909091,4.7272727272727275,0,4.7272727272727275,9.090909090909092,12.000000000000002z'%20fill='%23d8d8d8'%20transform='translate(48,0)'%20/%3e%3c/svg%3e)
43 reviews
By Gillian Wiltshire on 30 December 2025
A prompt, efficient service and good quality item
By Gillian on 30 December 2025
Always good qualitty and service
By Richard P on 15 August 2025
After a problem with the first cartridge the second works well. Thank you.
By Jennifer on 14 May 2025
Works well, Great service and fast dispatch
By Frank on 23 April 2025
Used this product for a long time, and the results are always very good.
1
2
3
4
5
Specifications
Epson printers that use Epson 378XL cartridges
Other cartridges and multipacks in this range

Compatible Epson 378XL High Capacity Cyan Ink Cartridge

Compatible Epson 378XL High Capacity Magenta Ink Cartridge

Compatible Epson 378XL High Capacity Yellow Ink Cartridge

Compatible Epson 478XL Red High Capacity Ink Cartridge

Compatible Epson 478XL Grey High Capacity Ink Cartridge

Compatible Epson 378XL / 478XL 6 Colour High Capacity Ink Cartridge Multipack

Compatible Epson 378XL High Capacity Light Cyan Ink Cartridge

Compatible Epson 378XL High Capacity Light Magenta Ink Cartridge

Compatible Epson 378XL 6 Colour High Capacity Ink Cartridge Multipack
















