Lexmark 18C0034 Black Ink Cartridge – High-Yield Compatible | Castle Ink

SKU: 18C0034 (Lexmark #34XL)  |  Type: Compatible High-Yield Ink Cartridge  |  Color: Black  |  Brand: Lexmark Compatible  |  Yield: ~475 pages at 5% coverage  |  Availability: In Stock

Lexmark 18C0034 Black Ink Cartridge — High-Yield Compatible

The Lexmark 18C0034 (also known as Lexmark #34XL) is the high-yield black ink cartridge for a long list of Lexmark and Dell inkjet printers and all-in-ones. Castle Ink's compatible 18C0034 delivers the same crisp, dark black text and approximately 475-page yield as the genuine Lexmark cartridge at a significantly lower cost — ideal for home offices, small businesses, and students that still print plenty of black-and-white reports, school papers, and shipping documents.

Why Choose This Compatible Cartridge

• Save up to 70% versus the genuine Lexmark 18C0034 (#34XL) cartridge.
• High-yield capacity — approximately 475 pages at 5% coverage.
• Sharp, dense black ink tuned for crisp text, fine lines, and reliable barcode print.
• Drop-in installation — no firmware updates, chip resets, or workarounds required.
• One-year quality guarantee from Castle Ink, with U.S.-based support.

Compatible Printers

• Lexmark P915, P4350, P6210, P6250, P6350
• Lexmark X2500, X3530, X3550, X4530, X4550, X5070, X5075, X5320, X5340, X5410, X5450, X5470, X7350, X7550, X8350
• Lexmark Z810, Z812, Z815, Z816, Z818, Z845, Z1300, Z1320

Best Use Cases

This high-yield Lexmark-compatible black cartridge is the right pick for households, students, and small offices that still rely on aging-but-reliable Lexmark inkjets for everyday black-and-white printing of homework, invoices, shipping labels, and personal correspondence. Choosing the Castle Ink compatible cartridge keeps these printers viable at a far lower running cost than continuing to buy OEM ink.

Frequently Asked Questions

Is this an original Lexmark cartridge?
No — this is a Castle Ink compatible 18C0034 (#34XL) replacement, not a Lexmark-branded OEM product. It is engineered to match the original in fit, yield, and print quality.

What kind of warranty is included?
Every Castle Ink cartridge ships with a one-year quality guarantee. If you have issues, we'll replace or refund — no questions asked.

How many pages will it print?
Approximately 475 pages at 5% page coverage, matching the OEM 18C0034 high-yield rated yield.

What if it doesn't work in my printer?
Contact our U.S.-based support team and we'll troubleshoot, replace, or refund — no restocking fees, no hassle.