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Karcher Pressure Washer O-Ring Seal Stock Number: ES538186

Karcher Pressure Washer O-Ring Seal - ES538186

4.6 out of 5 Rated 4.6 out of 5(18 customers)

Genuine spare part for select pressure washers.

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Manufactured by Karcher

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Pressure Washer O Ring Seal

If you need to replace the O ring seal in your Karcher pressure washer, this could be the ideal replacement for you. This is a genuine spare O Ring seal from Karcher, that could soon be yours to help get your pressure washer back in full working order.


  • Diameter: Inner 19mm - 20mm Outer
  • Dimensions: 10 x 2 NBR 70
  • This O-ring fits near to the cylinder head housing


Genuine spare part suitable for select models of Karcher pressure washers.

Please check the suitable model fit list to ensure that this is the correct part for your appliance.

Karcher spares reference: 6.362-151.0

Write a review

Here’s what other people are saying about Karcher Pressure Washer O-Ring Seal.

(18 reviews)

4.6 out of 5

Ease of fitting 5 out of 5
Quality 5 out of 5
Value 4 out of 5
  • Scotland
    4.0 out of 5

    one for one purchase

    easy fit to replace old one as purchased new elbow

    Ease of fitting 5.0 out of 5
    Quality 5.0 out of 5
    Value 4.0 out of 5
  • Wakefield
    5.0 out of 5

    Karcher K2 "O"

    Quality sealing ring but a bit expensive (if you knew its size, would be as cheap to buy a pack instead of just one probably)

    Ease of fitting 5.0 out of 5
    Quality 5.0 out of 5
    Value 3.0 out of 5
  • Market Harborough
    5.0 out of 5

    great service and even better service

    Never appreciated the breadth of spares available. in the past I used to either throw the appliance away or pay a fortune for someone else to fix it Now at reasonable cost I can do all the repairs myself. Have repaired three appliances over the last 12 months and saved a lot ofmoney hile getting a great deal of satisfaction

    Ease of fitting 5.0 out of 5
    Quality 5.0 out of 5
    Value 5.0 out of 5
See all reviews
Ask a Question

3 Questions and 3 Answers

I have an alternative use and need to use the ring for sealing water leak on a very old water cistern and they do not make the appliance any more. It looks just the type I need.

By P Trivedi - shropshire - 04 November 2015
  • Chris from eSpares
    Chris at eSpares says...

    We are sorry but cannot provide the details of the dimensions you require. If unsuitable you can return subject to our policy listed at:

Answer this question

There does not seem to be an obvious groove for the @o@ ring to fit into. I messed the current one by it going into the locking slot. Do you have a diagram that shows its position. Your video doesn't really help as it doesn't show the 'O'ring in place or how to refit the assembly.

By len8jq - - 23 April 2010
  • eSparesMalindi from eSpares
    eSparesMalindi at eSpares says...

    If you contact us with the full model details of your appliance, we should be able to send you a line drawing of your appliance which should hopefully help. If you do require further assistance please contact Karcher directly or a technician. Hopefully this link helps:

Answer this question

I have a Karcher 310. Yesterday the motor made a small "pop" sound and the water pressure dropped, and water started coming thro the vents in the back of the machine (and still thro the lance). Could you please advise what the problem is and what part I will need to hopefully fix this problem. The motor is still working.

By deckie - Derby - 09 April 2009
  • Rory from eSpares
    Rory at eSpares says...

    Hi Deckie, I'm going to refer you to the instruction manual for your model, which can be viewed here: If you go to page 18 of the document, it has a troubleshooting guide with ways you can diagnose the cause of your problem.

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