K397M-4F-WB (K 3.97M-4F-WB 1.423-105.0) Karcher Pressure Washer - Overview

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.

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 grooved ring seal is an authentic OEM replacement part used in pressure washers. It is a rubber seal with a diameter of 0.8 inches. The ring seal is found in the motor housing, where it helps to maintain the correct pressure preventing the water from leaking out of the pump housing. It also prevents water from entering the housing an...Read mored causing damage. Over time the seal may wear down, tear, or fall off leading to leakages and potential contamination. Inspect all the seals in your equipment as they tend to wear down at the same time and replace those that are no longer functioning well. Begin the repair by switching off the equipment. Remove the motor/pump housing and locate the faulty seal. Gently pry it off the cylinder head and discard it. Clean the mounting surface and press the new ring seal into the grooves until it is firmly in place. Reattach the housing to complete the repair. Each grooved ring seal is sold separately.

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.

Genuine Karcher replacement part, this item is sold individually. This is the Water Outlet Connection that the Hose for the Spray Gun attaches to. It is connected to the Pressure Washer by use of the 9.039-148.0 Clamp.

This is a genuine OEM supplied part which is specially designed for use with Karcher pressure washers. The filter helps to remove dust and other contaminants from the water that goes through the pump. Over time it may wear out, get damaged or lost eventually requiring a replacement. To ensure the correct application, refer to the owners m...Read moreanual for your model. Keep in mind this high-quality filter is sold as an individual item.

It is a genuine item that is supplied by the original equipment manufacturer for Karcher pressure washers. This is an identical replacement for a faulty or a missing metal fork that was installed on a new unit. To ensure the exact location and the correct replacement procedure, refer to the appropriate diagrams for your model. Note, this ...Read morehigh-quality fork is made of durable metal and is sold as an individual item. A screwdriver, a wrench set, and pliers might be needed to perform this repair.

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.

This genuine manufacturer-approved part is specially designed for use with Karcher pressure washers. The spring helps to apply tension to the cage. It is an identical replacement for a missing or a faulty component that was installed on a new unit. Please make sure to refer to the appropriate diagrams of your model for the correct locatio...Read moren and application of this hardware. Keep in mind this high-quality spring is made of durable metal and is sold individually.