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What does the cylinder head do for the pressure washer?
The cylinder head in a pressure washer encloses the combustion chamber and the piston in the engine. It plays a vital role in the compression and combustion process and converts fuel into energy to drive the pump and produce the high-pressure water flow.
What causes damage to the cylinder head?
The cylinder head in a pressure washer wears down with overheating, damage on the cylinder head gasket, incorrect torque settings on the head bolts, engine detonation, and contamination from debris or contaminants entering the engine.
These issues can lead to a damaged seal, reduced compression efficiency, leaks, and decrease in the engine's overall performance.
Is it a genuine spare part?
This cylinder pump head by Karcher is a genuine pressure washer replacement part. Your pressure washer can work good-as-new in cleaning surfaces.
Manufacturers Part Number:
- 9.001-105.0
Alternative Part Numbers:
- 90011050
EAN Number:
- 4002667700695
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Safety note:
Warning: Always unplug any appliance from the electricity supply before carrying out any work or testing on it.
Latest Product Review(s)
Read All Reviews
15 Customer Review(s)
A GREAT PRODUCT
THIS PART HELPED RESTORE MY KARCHER PRESSURE WASHER BACK TO WORKING LIKE NEW. THIS PLUS RAPID SERVICE AND DELIVERY SHOWS THEY ARE A VERY GOOD COMPANY TO DEAL WITH. WELL DONE RANSOMSPARES
By RONALD COLLETTE - BEXLEY
31st Aug 2020
Small item but makes a difference
Ordered this to get pressure back on my very old K5.55M. It took while to open all needed parts but I got it there thanks for the instructions from some youtube channels. All good now, and many thanks!
By Helmut Kiessling - Maidenhead
18th Jun 2020
Karcher Parts
I ordered the spare parts for my Karcher Power Washer after looking them up on the Ransom web page which was easy to use and informative. The parts arrived in the specified time and were easy to fit. My Power Washer is once again working like new and at the fraction of the cost of purchasing a new one. I would highly recommend the service and part that I received. I've used them again to order some other parts for a friends power washer.
By Terry Hislop - Perthshire
9th Apr 2020
Excellent replacement part
The replacement pressure washer high pressure head was exactly as the original, which was many years old and had split. I didn't expect to be able to get the part but as usual, Ransom had the part in stock. rapid delivery and superb service.
By Paul Richardson - Stoke on Trent
4th Nov 2019
Good quality
Good quality. Just as promised. Easy to install. Fast shipping
By Jukka Honkanen - Ylöjärvi
14th Jun 2019
product conform
nothing to say for the product but i make a mistake it was not the good spare...
By lievin dominique - MORNAC france
25th May 2018
low spray pressure
i wasn't sure why my Karcher pressure washer had lost so much power so i spoke to the tech guys at ransom spares and they convinced me this part is normaly the issue so i ordered one. It arrived really quick and fitted it with ease, the pressure is now back up to where it should be.....great service for a good cheap solution to avoid replacing the pressure washer know where to come next time i need parts for anything
By Steven Carey - norwich
1st Mar 2018
Does what it says on the tin.
Genuine Karcher part so fitting went without a hitch.
By Mick - Stoke
4th Oct 2017
Prolonging the life of an old friend
When my washer developed a leak with the loss of pressure I thought it was the end of the road for my trusty pressure washer. However Ransome Spares came to the rescue. The part was sensibly priced and with little effort easily fitted. Net result, pressure back to better than that before ( I guess the bores in the head were worn) and no leak. A substantial saving on buying a new machine - result!
By David Cooney - Poole
4th Sep 2016
Good Service
Part came very quickly, correct as ordered fitted easily but didn't solve problem so on the next replacement part.
By Barry Back - Leeds
25th Aug 2016
Questions And Answers
1 Answer(s)
Does the pressure cylinder head include the three grooved rings (RS512655) and seal (RS512894)?
Hi Paul, I can confirm the piston seals and triangular seal are supplied with this cylinder head.
1 Answer(s)
Hi ,can you supply 3 grooved rings to fit Karcher k3 pressure washer cylinder headset?
Many thanks.
Regards Thomas
Hi Thomas, please submit a part enquiry including the TYP number beginning 1. from the bottom of the pressure washer so we can confirm the correct rings.
1 Answer(s)
My Model K4.99M-DELUXE GB - is there any instruction for fitting - have searched around and failed
Hi Jeff, I'm afraid we cannot offer fitting instructions. I'd recommend contacting an engineer to see if they can advise.
1 Answer(s)
My Karcher kb9030 runs with a normal motor noise when switched on but with no mains water pressure. When the water supply is turned on the motor starts to make a "hunting" noise. It runs normally when the lance is operated for spraying but not as powerfully as when new. Could this be due to a damaged cylinder head and will replacement cure the problem? I recently replaced the capacitor when the motor stopped running, so I do not think that the motor itself is the problem.
Hi Ken, unfortunately we cannot diagnose faults. I'd recommend contacting an engineer to see if they can advise.
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