Multiquip 213400001 Arm Plunger MQD3H - OEM Replacement Part

The arm plunger is a critical actuating component in diaphragm water pump systems, converting rotational motion from the crankshaft into the reciprocating action needed to drive the diaphragm and move water through the pump. When this component shows signs of wear—such as reduced pumping pressure, irregular flow, or excessive vibration—replacement is essential to restore full pump performance and prevent secondary damage to the diaphragm assembly.

Designed specifically for Multiquip diaphragm water pumps, this OEM arm plunger ensures precise fit and reliable operation under demanding jobsite conditions. The component directly impacts pump efficiency, flow rate, and overall system longevity. Using genuine OEM parts maintains the engineering tolerances required for proper diaphragm operation and optimal pressure generation.

Compatible with the following Multiquip models:

• MQD2H

Genuine Multiquip OEM part, sold by an authorized dealer.