Karcher Pressure Washer Parts

Kärcher Pressure Washer Parts

Kärcher pressure washers are built for professional-grade cleaning, but like all PW equipment, the pump, valves, and engine parts wear out. When your Kärcher won't build pressure, leaks, or won't start, Repair Clinic carries OEM parts that restore it to factory performance.

The pump is the heart of any pressure washer — it's where most failures happen. Unloader valves, O-ring kits, spray guns, and nozzles are also common replacements. For gas-powered Kärcher models, carburetors clogged by ethanol-damaged fuel are a frequent culprit. Enter your Kärcher model number to find the exact parts you need.

• Pump assembly or pump seals: Low or no pressure; internal leaks; most common Kärcher failure
• Unloader valve: Pressure won't build or pulses erratically; safety valve for idle bypass
• Spray gun and wand: Won't trigger, leaks from handle, bent wand or nozzle seat
• Hose and O-ring kits: Connection leaks; kinked or cracked hose; inlet or outlet seals
• Carburetor (gas models): Hard start, runs rough, won't run; ethanol residue clogs jets and float needle

Kärcher Pressure Washer Parts: FAQs

Why does my Kärcher pressure washer lose pressure mid-job?

Pressure loss usually points to the pump or unloader valve. If it starts fine but drops after a few minutes, the unloader valve may be stuck partly open — it's supposed to bypass water to idle when the trigger is released. If pressure won't build at all, the pump itself is failing. Before replacing the pump, check for kinked inlet hoses or a clogged intake filter; a restricted water supply can mimic pump failure. Verify incoming water pressure is at least 20 PSI.

How do I know if my pump or the spray gun is the problem?

Disconnect the spray gun from the hose and point the hose into a bucket. Run the Kärcher for 10 seconds — if strong pressure comes out of the hose end, the gun is bad. If there's still weak pressure, the pump or unloader is the issue. A failed trigger valve inside the gun is very common and much cheaper than a new pump. OEM Kärcher spray guns are built to higher tolerances than aftermarket versions.

What causes a Kärcher carburetor to clog, and how do I fix it?

Ethanol fuel left sitting in the tank over winter or for months at a time gums up the carburetor jets and corrodes the float needle. This is the #1 reason gas Kärcher models won't start. Before buying a new carburetor, try a carburetor rebuild kit — it includes a new gasket, float needle, jet, and float. If the carb is severely varnished inside, a full carburetor replacement is faster. Always drain fuel and run the Kärcher dry before long storage, or use fuel stabilizer to prevent ethanol damage.

How do I find my Kärcher pressure washer model number?

The model number is typically on the rear panel or the side of the motor housing — look for a sticker or stamped number starting with letters like K, KD, or NT (Kärcher's North American lines). Enter the full model number into Repair Clinic's lookup to see all compatible parts. If you can't find the model number, measure your unit's pump inlet/outlet, pressure rating (usually 1500 to 4000 PSI), and power source (gas/electric) — those details narrow down the parts.

Order Karcher Pressure Washer Parts Online

Keep your Karcher pressure washer performing at its best with genuine replacement parts available online. Whether you need pressure sprayer parts, nozzle replacements, or other repair essentials, finding the right Karcher parts is simple with a model or part number lookup. Enjoy the convenience of same-day shipping, ensuring your pressure washer repair parts arrive fast. With a No-Hassle 365-Day Returns policy and a Price Match Guarantee, you can shop confidently, knowing you're getting competitive pricing on genuine Karcher pressure washer parts. Experience reliable ordering and get back to tackling tough cleaning tasks in no time. For more assistance with pressure washer troubleshooting and repairs, visit our Pressure Washer Repair Help page. For additional Karcher parts, browse our Karcher Pressure Washer Parts section.

Karcher Pressure Washer Model Number: Where to Look

Karcher prints the model number on a label at the rear panel or on the side of the motor housing on most pressure washers. If the sticker is hard to see, look along the frame near the engine or around the pump housing for a second identification plate. Record the complete model number, including letters, numbers, and periods. Drop it into the search bar and you will see only the parts that fit your exact model. This filters the full Karcher pressure washer catalog, so you are not comparing parts from similar machines. You order with confidence knowing the fit is right.