Ensure stable communication between printer control boards with the genuine Epson Relay SUB FFC1 Harness (Ref. 529, 2221567). Designed for the Epson SureColor F6430 and F6430H printers, this replacement FFC harness provides secure signal transmission for smooth printer operation and consistent print quality. Ideal for replacing damaged or worn FFC harnesses in professional dye-sublimation printing environments. This genuine Epson spare part offers a precise fit, dependable performance, and long-lasting durability.