Karcher High Pressure Extension Hose - 6m

Stock Number: ES547351

Manufactured by Karcher

Only 6 left in stock Available for immediate despatch

Rated 4.8 out of 5 (31 customer reviews)

Read all reviews Write a review

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Will this part fit my appliance? [?]

This product is compatible with:

  • Karcher Domestic K1 Series Pressure Washers
  • Karcher Domestic K2 Series Pressure Washers
  • Karcher Domestic K3 Series Pressure Washers
  • Karcher Domestic K4 Series Pressure Washers
  • Karcher Domestic K5 Series Pressure Washers
  • Karcher Domestic K6 Series Pressure Washers
  • Karcher Domestic K7 Series Pressure Washers

Click on your brand to check other appliances this part fits

Karcher Pressure Washers


This Kärcher 6 metre high pressure extension will allow you to work in a much larger radius of the pressure washer, clean a far greater distance from the pressure washer, and this gives long uninterrupted periods of use.

To know if this hose will fit your Karcher pressure washer you'll need to know the your model number.

Please note: This part is an extension hose and can only be used in conjunction with the existing hose and does not fit onto machines with internal hose reels. If your hose fits into the base of the gun with a quick release clip use part number 6.390-961.0 (ES875473). If your hose fits into the front of the trigger guard and you push a button to remove the clip (generally found on newer machines) use part number 2.641-710.0 (ES1115581).

This is Karcher spares reference: 6.390-243.0

How to replace a Karcher hose and handgun

This video should help with fitting this part. However, the exact layout and fitting technique may differ for your make and model.

Be safe - always unplug any appliance from the electricity supply before carrying out any work on it.
If you are in any doubt contact a qualified repairer.

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Product Reviews

Rated 4.8 out of 5 (31 customer reviews)
Write a review
  • does what it says on the tin!

    • 5.0 out of 5
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    • 4.0 out of 5

    By - Bristol

    Excellent service and very useful,didn't screw onto my pressure washer very easily but that may have been me!,now on there and won't come off,again probably my fault,overall still very pleased
  • More than just right

    • 5.0 out of 5
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    • 5.0 out of 5

    By - Preston

    An extension that lets me do the whole car without constantly moving the Karcher about. Perfect for doing the path all around the house (rather than just the front). Brilliant for cleaning the moss and other rubbish off the slates on the roof of the garage without getting filthy in the process - the extension to my K2.3 series is just the job.
  • Very good product

    • 4.0 out of 5
    • 5.0 out of 5
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    • 4.0 out of 5

    By - Andover

    Should have purchased this extension hose long ago this extra length makes it a lot better to work with.No need for extension lead now which also safer

Ask & Answer

(5 Questions and 5 Answers) Ask a question
  • Q i would like to add a extension hose to my existing model 380 nr 035050 1 Answer

    Does the extension hose connect into the lance thus disregarding my excisting hose or does it connect into the lance lead i have attached all ready

    By happy days 71 - Plymouth - 25 March 2014

    • A
      This is suitable to extend any hose that uses the screw fitting and does not have a quick fit push connection to the high pressure hose at the machine.

      By Chris eSpares Staff - 25 March 2014

  • Q my k2900 has a fixed hose and a screw on connector to the unit. How do i get and fit a longer hose or drain cleaner 1 Answer

    By peter - 12 March 2014

    • A
      This extension hose will fit between your gun hose and the machine to extend it. The drain kit will plug into the gun when the spray lance is removed.

      By Chris eSpares Staff - 12 March 2014

  • Q how does the extension 6.390-243 fit onto a karcher k6.75 1 Answer

    i had it as a christmas present but come to use it yesterday and was unable to attach it

    By macker - birmingham - 19 April 2010

    • A
      Unfortunately we cannot provide fitting instructions for this part. Please contact Karcher or a technician for help with this.

      By eSparesMalindi eSpares Staff - 18 June 2010

  • Q Does this fit the K3.80 ? 1 Answer

    I have a k3.80 unit does this unit fit and work ok ?

    By higgerz - 08 April 2009

    • A
      Not too sure about this, as I had previously asked Karcher for detail of the hose as no one was able to identify my particular model. K9030 1-421-600

      By marinula - Donington, Lincolnshire - 08 May 2009

  • Q Karcher Extension Hose 1 Answer

    Hi guys, Just want to know if this extension hose will fit my 110B. It's about 8 years old but still going strong! I've attached an image of it below. Many thanks, Paul.

    By taffy1973 - 09 February 2009

    • A
      Hi Taffy1973, this hose will indeed fit your trusty 110B.

      By Rory eSpares Staff - 18 March 2009