This genuine HARDI 33511400 diaphragm membrane is an essential component for maintaining optimal performance in HARDI 361, 461, 561, 661, 761, 861, 1061, and 1261 series pumps. Designed for durability and precise fit, it ensures reliable operation across a wide range of HARDI agricultural sprayers, including COMMANDER, NAVIGATOR, ZAPPER, MASTER, and RANGER models. With an outer diameter of 150 mm, an inner diameter of 20 mm, and a thickness of 5 mm, this OEM replacement part guarantees compatibility and restores pump efficiency.