Part Location Diagram of 4.553-173.0 Karcher Piston Complete
See part C-3 in the diagram
( Grid squares measure 1x1 inch )

Piston Complete 4.553-173.0

Manufactured by:
Karcher
ERP Number:
ERP9949560
Part Number:
4.553-173.0
Original Equipment Manufacturer ?
$54.13
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(1 rated repair) ?

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Product Description

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This is an authentic OEM sourced component which is specially designed for use with Karcher pressure washers. The piston is an important part that helps to build up pressure inside the cylinder. It provides an identical replacement for a missing or a faulty part that was installed on a new unit. Please make sure to refer to the owners manual and the appropriate diagrams of your model for the correct location and application of this piston. Keep in mind this high-quality item is made of durable metal and is sold individually.

Troubleshooting

This part works with the following brands:
  • Karcher
This part works with the following products:
  • Pressure Washer

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Customer Repair Instructions

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Easy 

15 - 30 mins 

(1 rated repair) ?
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Sorry, we couldn't find any existing installation instruction that matched.

Pump would only function a few seconds and go back to low pressure

Kent from Woodland Hills, Utah

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Socket set
1. Removed pump frame from casting that connects to gas motor.
2. Of the 3 pistons, two had popped the retainer clips off which releases the tension, and any function of the spring. One of the clips was damaged, the other was reusable.
3. Gear oil in the case was cloudy from water intrusion. Replaced the gear oil.
4. Had to purchase a piston to get a keeper/clip. One spring was slightly bent so I replaced it. On a unit more than 15 yrs old, I replaced rubber gasket even though old one was not leaking.
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