K550M-PLUS (K 550M-Plus 1.274-106.0) Karcher Pressure Washer - Overview

This OEM Grooved Ring is a 12 x 20 x 4/6 rubber ring which can be installed with a screwdriver and wrench set. Installation is rated as "Medium" difficulty. It attaches in the cylinder head and is used to keep the oil in the pump from mixing with the water. If broken it will leak and must be replaced.

This is a manufacturer sourced replacement part designed for use with Karcher pressure washers. This ring provides an air-tight seal for the cylinder head. Over time this ring will shrink, become brittle and crack allowing for air leaks. At that time it should be replaced. It is made out of rubber and it is sold individually. Replacing this item you would need hex key/allen wrench and pliers to replace this item.

This O-ring is a genuine part from original manufacturer. It is used with the cylinder head in Karcher pressure washers. An O-ring is a flexible circle which acts as a seal between rigid parts. It is a simple component but it is often essential for a machine to function correctly. Sold individually. Note that this ring is available with part # 9.001-104.0 Spare Parts Set.

This is an authentic OEM part made by Karcher for use in pressure washers. The connection fits next to the filter and the cover on one side and the hose coupling on the other. It is made of plastic and will need replacing if it breaks. A screwdriver might be needed during the installation process. This part is available as an individual replacement.

O-rings are flexible circles which are used to prevent leaks and maintain pressure. This part is an authentic OEM replacement ring used in Karcher pressure washers. These O-rings are used at the connection point between the machine and its hose. This set includes five (5) identical O-rings. Please note that the wand itself uses a separat...Read moree set of O-rings, part # 2.640-729.0 O-Ring Seal Set. Multiple other sizes of O-ring are used in various other spots on these machines; see manual for part numbers and placements.

This authentic OEM sourced replacement part that is designed for use with Karcher pressure washers. The purpose of this switch is to control on/off function of the unit. Because switches use mechanical internals, over time they will begin to deteriorate and fail eventually requiring replacement. This durable plastic switch is sold individually.

This replacement filter is supplied directly from the original equipment manufacturer for use with Karcher pressure washers. It helps to ensure the water that goes through the unit is free of dirt and other harmful contaminants. It can over time get clogged, damaged or lost eventually requiring a replacement. Keep in mind this high-qualit...Read morey filter is sold as an individual item. Refer to the owner's manual for your model to ensure the correct repair procedure.

This is an authentic Karcher replacement part manufactured for use with pressure washers. The special bush is used with the valve in the gun assembly. This bush is sold as an individual replacement part, please see model diagram for associative parts.

This replacement soap diffuser hose is specially manufactured for use with Karcher pressure washers. It is the hose that the in-tank filter is attached to to deliver the soap needed for the unit. It is made from durable flexible rubber material and it is sold individually.

This manufacturer sourced replacement part designed for use with Karcher pressure washers. It is the essential part of the unit allowing to direct and control the spray. Please note the wand is sold separately. This pistol assembly is made out of plastic and it is sold individually.

It is an identical replacement for a damaged or a missing valve that was installed on a new unit. Check the diagrams for your model to ensure the exact location and the correct application of this part. One durable valve and a metal spring are included. This authentic component is supplied by the original equipment manufacturer for use with Karcher pressure washers.