# Ink cartridge ARMOR compatible with Epson C13T11D340 (red/magenta) — model K21055OW

**URL:** https://aio.lv/en/product--armor-k21055ow--12219559
**Data updated:** 2026-03-27 14:01 (EET)
**Category:** Inkjet Printer Cartridges
**Manufacturer:** ARMOR
**Manufacturer code:** K21055OW
**EAN:** 3112532850637
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 49.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 40.90 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--armor-k21055ow--12219559

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Compatible ink cartridge by ARMOR for use in printers accepting Epson C13T11D340 cartridges. Color: red/magenta. Designed as a replacement cartridge (MPN K21055OW, EAN 3112532850637) to provide color printing for documents, photos and marketing materials. Suitable for desktop inkjet printing tasks where a red/magenta ink is required.

## Long description

ARMOR compatible ink cartridge for use in printers that accept the Epson C13T11D340 cartridge. This red/magenta cartridge provides pigment-based ink formulated for desktop inkjet devices and is intended as a functional replacement to restore color printing capability for documents, photos and marketing materials. The cartridge is suitable for single-color replacement when red or magenta ink is depleted and supports standard office and home printing workflows.
Advantages
The ARMOR compatible cartridge delivers consistent color output and is designed to fit printers compatible with the Epson C13T11D340 physical form. It offers a cost-effective alternative to original-brand consumables while maintaining stable nozzle flow for reliable printing. The red/magenta pigment provides vivid tones for graphics and accent colors in text and images, helping preserve print quality for routine and high-volume jobs.
Suitable for
Replacing depleted red/magenta ink in compatible inkjet printers
Printing color documents, flyers and brochures
Producing photos and promotional materials requiring red/magenta tones
Office and home printing tasks with moderate to high monthly volume
Key specifications
Color: Red/Magenta
Type: Compatible replacement ink cartridge for inkjet printers
Volume: 77 ml (approximate usable ink volume for printing)
Estimated page yield: up to 7,500 pages under standard test conditions
Ink technology: pigment-based formulation suitable for standard plain and coated papers
Physical compatibility: designed to match form factor and electrical contacts of cartridges accepting the same cartridge family
How to use
Remove the empty cartridge from the printer following the device manufacturer’s instructions, taking care to power off or place the printer in cartridge-replacement mode if required. Unpack the ARMOR compatible cartridge, remove any protective seals according to the included directions, and insert the cartridge into the correct color slot. After installation, run a head alignment or nozzle check utility from the printer menu to confirm proper seating and to ensure consistent print quality. Dispose of packaging and any protective material according to local recycling guidelines.
Usage recommendations
Store cartridges in a cool, dry place away from direct sunlight and heat sources. Use installed cartridges within the time recommended by the printer manufacturer to avoid ink drying or clogging. For best results, use regular nozzle checks and print head maintenance when switching between different brands of cartridges to maintain consistent color output and prolong printer life.

## FAQ

### How much does the ARMOR compatible ink cartridge K21055OW (red/magenta) cost, and is it available for purchase?

The price is 49.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 20.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ARMOR products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ARMOR service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12219559/68045752_large.webp