Epson WorkForce Pro WF‑C879R Yellow XL Ink Supply Unit (T05A4 / C13T05A40N)

Epson WorkForce Pro WF‑C879R Yellow XL Ink Supply Unit (T05A4, part number C13T05A40N) delivers up to 20,000 pages of vibrant, pigmented yellow ink designed for high-volume colour printing. Engineered specifically for compatibility with Epson WF‑C879R and WF‑C878R series printers, this genuine supply unit provides reliable DURABrite Ultra pigment ink performance, consistent colour accuracy, reduced operational costs, and industry-leading reliability in professional and commercial environments.

Product Features

high-capacity yellow yield

Produces up to 20,000 pages per unit (ISO/IEC 24711 at 5 % coverage), enabling fewer cartridge changes and more uninterrupted print runs.

pigment-based yellow ink for durability

Uses Epson’s DURABrite Ultra pigment formulation to deliver sharp, vibrant yellow output that resists fading, smudging, and moisture exposure over time.

designed for genuine Epson compatibility

Specifically built for the Epson WorkForce Pro WF‑C879R and WF‑C878R models, installation is seamless and preserves printer warranty and performance.

enterprise-grade ink delivery technology

Features a pressurized ink reservoir and precision valves to ensure uniform ink flow and prevent air bubbles, maintaining consistent print quality from first to last page.

eco-conscious replaceable ink system

Part of Epson’s RIPS (replaceable ink pack system), this unit supports large-volume printing while minimizing waste and encouraging cartridge recycling.

Product Specifications

• Model / part number: T05A4 (also designated C13T05A40N)
• Compatible printers: Epson WorkForce Pro WF‑C879R and WF‑C878R series (including DTWF, RDWF variants)
• Ink colour: Yellow (pigment‑based DURABrite Ultra)
• Page yield: Up to 20,000 pages at 5 % coverage (ISO/IEC 24711 standard)
• Ink technology: Durable pigment‑based ink for long-lasting colour
• Installation: Secure‑lock replacement with smart chip monitoring
• Reservoir type: Pressurized ink delivery system with flow-control valves
• Packaging: Single sealed unit, lightweight and compact to reduce shipping footprint
• Physical dimensions: approx. 185 mm × 95 mm × 65 mm; weight approx. 420 g
• Storage life: Up to 36 months unopened; operating range approx. 10 °C–40 °C; storage −10 °C–50 °C; humidity 15–85%
• Environmental compliance: ENERGY STAR‑qualified, 90% recyclable packaging, support for Epson recycling programme