Karcher Pressure Washer Cylinder Pump Head4.551-159.3

What does the pump head do for the pressure washer?

The pump draws water from a water source, typically through a hose, and pressurises it before sending it to the nozzle. Its main function is to increase the water pressure, allowing for effective cleaning of surfaces. 

It accomplishes this by using pistons or impellers that create a pulsating or continuous flow of water, depending on the pump type.

What causes the pump head to be faulty?

The continuous operation and exposure to high pressures and water flow can lead to the deterioration of pump seals, valves, or pistons. These components may develop leaks or lose their ability to maintain the required pressure. 

Another factor is inadequate maintenance, such as failing to properly winterize the pressure washer, allowing water to freeze inside the pump and cause damage. 

Running the pressure washer without an adequate water supply or using water that contains abrasive particles or contaminants can also contribute to pump head failure. 

Is it a genuine spare part?

This cylinder pump head by Karcher is a genuine pressure washer replacement part. Your pressure washer can work good-as-new in cleaning surfaces.