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upper cover lock is designed for the ink tube supply system, with replacement OEM number C7769-40041. It provides firm fixation for ink tubes to ensure stable ink transmission and avoid air intake or leakage.
It is fully compatible with HP Designjet 500, 500PS, 510, 510PS, 800 and 800PS large-format printers. Made of durable engineering plastic, it fits precisely and installs easily, making it an ideal repair part to maintain normal printer operation.