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Autodesk Fusion 360Autodesk
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Karcher piston washer 5.115-471.0
This is a washer needed between the pistons seals for a range of olds Karcher Pressure Washers such as K400-K600 range.
Mine is a K620M.
Unfortunately this part is no longer produced by the manufacturer.
If your beloved old Karcher is leaking like crazy but the motor still run, it is likely that your pistons seals are worn out.
Those seals are easily found but not the washer between them (no longer produced), and it usually is worn out with cracks in it.
I've designed this washer to fit in direct replacement.
You will need 3 of them (3 pistons in my K620M)
To be printed in a Heat and Chemical Resistant material.
I choose Glass Fiber Nylon.
Karcher piston washer 5.115-471.0
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Marko Zelic
Aug 05,2026
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