Karcher K3.99M Pressure Washer Spares
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Get the replacement part you need for your Karcher Pressure Washer from the UK's largest supplier of appliance spare parts. Our range includes everything you need to save money with a do-it-yourself Pressure Washer repair as well as quality Pressure Washer care, cleaning and maintenance products.
In our Appliance Advice Centre you'll find helpful hints and tips to take the hassle out of Karcher Pressure Washer repairs as well as advice on fitting popular Pressure Washer spare parts and the latest appliance repair videos - which cover everything from 'how to repair a Pressure Washer' to 'fixing common Pressure Washer faults'.
Important Note: The model you have selected has more than one serial number which may mean that some parts are serial number specific and therefore may appear multiple times in these search results. If you have the serial number available then please select it from the list below to ensure you get the right part first time.
Select your Serial Number:
Karcher K3.99M (1.423-230.0) : 1 - 12 of 160
Karcher K3.99M Grooved Ring - Seal
Genuine spare part
If the grooved ring seal in your pressure washer pump has snapped or worn out, help ensure optimum performance once again with this quality replacement.... More information
£2.50
Karcher K3.99M K2-K7 Spray Hand Gun (C-Clip Version)
Genuine spare part
PLEASE NOTE: A New designed gun will be supplied. This will look physically different to the original. The new gun incorporates a child lock in the... More information
£30.46
Karcher K3.99M Form Seal
Genuine spare part
This replacement Form Seal is located on the pump of your pressure washer and sits between the cylinder head and control piston. If you notice that... More information
Save 10% if you buy 2 or more - only £2.25
£2.50
Save 10% if you buy 2 or more - only £2.25
Karcher K3.99M Spray Lance Extension - 0.5m
Genuine spare part
Extends spray lance by 0.5m Effective cleaning of difficult to reach areas Unlimited pressure adjustment Low pressure detergent Dimensions : L:445... More information
£21.59
Karcher K3.99M K2-K7 High Pressure Replacement Hose - 9m
Genuine spare part
9m High-Pressure Replacement Hose Quick Connect connector - quickly click in and out of the pressure washer and gun Bar Pressure: 160 Bar Maximum... More information
£56.26
Karcher K3.99M Pressure Washer O-Ring Kit
Genuine spare part
For simple replacement of O-rings and safety plug on pressure washer accessories 16 x O-rings (across 5 sizes) 4 x Yellow rubber stoppers The O-Ring... More information
£17.16
Karcher K3.99M Hose Connector
Genuine spare part
3/4" Your pressure washer increases the water pressure from a standard water spigot to over 1,000 PSI, so the water pressure can be used to remove... More information
£7.34
Karcher K3.99M Piston Seal
Genuine spare part
If the piston seal for your pressure washer has become damaged or snapped, then delay no more and take advantage of this quality replacement to help... More information
Save 10% if you buy 2 or more - only £4.56
£5.07
Save 10% if you buy 2 or more - only £4.56
Karcher K3.99M Metal Fork
Genuine spare part
This metal fork is located in the pump housing on your pressure washer. If your existing fork is damaged, help ensure smooth operation once again... More information
£2.50
Karcher K3.99M O-Ring Pressure Washer Seal (Pack 5)
Genuine spare part
Diameter: 12 (mm) This pack of five pressure washer o-ring seals are perfect if the existing gaskets on your pressure washer lance are worn out or... More information
£5.64
Karcher K3.99M Water Outlet Connection Cover
Genuine spare part
PLEASE NOTE: This does not include the O Ring - please see associated products If you have a leaking pressure washer, one of the main causes is the... More information
Save 10% if you buy 2 or more - only £7.63
£8.48
Save 10% if you buy 2 or more - only £7.63
Karcher K3.99M HK12 12m High Pressure Hose & Gun
Genuine spare part
PLEASE NOTE: You must search for this part using the product number rather than the model number. This will be an 8 digit number that begins with... More information
£84.78
