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Pressure Washer Outlet Connection Cover Stock Number: ES538457

Genuine spare part for select models of Karcher pressure washers

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By JD - Anglesey - 28 August 2015
  • Chris from eSpares
    Chris at eSpares says...

    Depending on model you may have to replace the control head itself.

  • Hi Matt. Its the thread on the control head cover that has worn. In fact, the slot where the metal fork clip should fit has somehow sheared off. Changing the elbow is the easy bit. What about the control head? By Simon - - 14 July 2016
  • What about worn thread on the connector from the piston head cover - where it connects to the outlet elbow. I've no idea how its worn but it means the c clip no longer holds the outlet elbow in place and now I get a leak when the washer is powered up. By Simon - South Oxon - 13 July 2016
  • Chris from eSpares
    Chris at eSpares says...

    If the thread on this connector is damaged replacing this as shown in the video should resolve the problem.

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model 4.99 new out elbow fitted. leaking at point where elbow meets outlet pump. Ordered o ring for it. I have fitted it over the screw fit on the outlet pump. now cannot fit new elbow to pump. cannot insert metwl clamp. Any ideas? Am I puting the o ring in the correct place? Any help appreciated Bob

By wyrmbk - - 06 May 2010
  • As stated above you need a small O ring which doesn't come with espares part (although espares claim it comes woth all seals). I found that when I connected up to the low pressure hose the outlet connection leaked slightly so I wasn't hopeful. However when I switched on the pump the leak got worse for a second then it stopped suddenly - I assume the pressure seated the O ring properly. The sealing method is quite confusing - the outlet connection has an internal tube with an external O ring which looks like it should seal to the inner surface of the pump outlet. However it as actually much too small to do this - presumably it's for use with a different model. Incidently the pressure hose will seal directly to the pump outlet (without using the elbow) and it seals using this type of external O ring. It seems Karchner use some universal parts that seal in different ways on different models. By DavidB - - 26 April 2011
  • Hi Bob, You need the small 'O' ring which is about the same size as the one on a male garden hose connector. It just sits on the inner pipe. The screw fitting is not actually used with this connector and (I think) was or is for a different machine using the same pump. The big orange DIY store does a pack of 'O' rings in the plumbing section for about £1.99. The one you need is in there - so is the larger one for the Inlet (clear plastic) pipe. That one sits in a groove and is easy to see! Best of luck, CJ By CockneyJock - Trowbridge, Wiltshire - 08 June 2010
  • The O ring fits inside the female connection of the pump so that it buts up to the elbow outlet fitting. By slopekeys - penkridge - 01 June 2010
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After replacing this part, anytime I hook up the pressure hose, the pressure forces water out through the other end i.e. metal c-clip end (washer is still off). Is there a seal/o-ring that I am missing at this end ?

By DUGG - Ireland - 22 March 2010
  • Nearly made the same mistake. Inside there is a small rubber O ring, luckily I saw it when it fell out but could easily have missed it. By wheltonpat - Alicante, Spain - 12 May 2010
  • Yes. It is a standard size, Though I cannot remeber the actual size. By senna1 - Leeds - 10 May 2010
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I have a K3.99M pressure washer and purchased the replacement hose kit but can't fit the adaptor to my pressure washer - it feels like they have different threads. The thread on the outlet cover looks worn but I'm not sure if this damage has been caused by my efforts to fit the adaptor. On the box it states that the kit is suitable for K2 - K7.

By Garry - Camberley, Surrey - 19 November 2017
  • Chris from eSpares
    Chris at eSpares says...

    This connection should be suitable.

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By Robert Cook - Orpington Kent - 29 December 2015
  • Chris from eSpares
    Chris at eSpares says...

    Looking at the yellow connectors on Stock Number: ES537803 they look as if they simply rotate 45 degrees to allow the bayonet fitting to release and remove them.

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I want to clean my roof tiles.

By Tom - Newcastle upon tyne - 01 June 2015
  • Chris from eSpares
    Chris at eSpares says...

    Although you may be able to connect a telescopic extension you would not be able to control the sideways movement at the gun caused by the discharge of the high pressure water.

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By jk - Scotland - 01 August 2014
  • Chris from eSpares
    Chris at eSpares says...

    We are sorry but do not have a video or advise article covering this at the moment.

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there is plenty water pressure at the inlet (3.5bar) can i increase the jet on the float valve at the tank ?

By chicko - perth scotland - 18 January 2014
  • Chris from eSpares
    Chris at eSpares says...

    If the water level is dropping on your machine it is either leaking underneath or perhaps more likely it is syphoning down the drain hose. This can occur if the end of the drain hose is lower than the water level in the machine. To cure this fix the drain hose with the 'crook' to not allow the end to be lower, for more details see our video: http://www.espares.co.uk/advice/7/1732/how-to-diagnose-washing-machine-drain-and-pump-problems

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hi i have just fitted a new pressure washer oulet connector, fitted quite easily, but when i switch on the pump it leaks, but when i turn the pump off and allow the water to flow through it doesnt leak, o ring is in place too, any suggestions please

By mark - Cheshire - 29 March 2011
  • Rory from eSpares
    Rory at eSpares says...

    Hi mark, it may well be that the pump itself has become damaged or cracked - especially if the symptoms started since you started using your washer again after the winter months. Water freezing inside the pump can cause damage and leaks.

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Karcher KB5050 needs this outlet part, it has split. There is no O ring on my machine sealing the part onto the machine, should it have one? is the seal integral to the part and machine without an o ring seal. The O ring seal you mention as not provided, is that only an O ring seal for the outlet hose to this part? Please confirm before i order.

By Petrolhead63 - - 20 January 2010
  • It certainly needs a ring, but the original ring could be stuck in the socket into which the part fits By Greybeard0151 - Chester - 25 February 2010
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Pressure Washer Outlet Connection Cover

£7.49
(inc. VAT)
£7.49