Diaphragm Kit, 5500

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Part 2419185 Diaphragm Assembly is a genuine replacement pumping component used in compatible Elite 5500 and PowrLiner 4500/5500 airless sprayers. It serves as the flexible pumping element in the fluid system, moving back and forth to create suction and discharge strokes that draw in and deliver material through the pump. The assembly includes a durable elastomeric diaphragm bonded to a rigid center plate with integrated mounting hardware. When the diaphragm becomes worn, stretched, or damaged, it can cause issues such as loss of prime, reduced pressure, irregular spray output, or fluid leakage. Replacing it restores proper pump operation, stable pressure, and consistent spraying performance. Show more