Kärcher K4 Classic — 1800W corded pressure washer, 130 bar, 420 L/hr, 6m hose
Corded pressure washer with 1800W air-cooled motor for regular cleaning of moderate dirt. Covers approx. 30 m²/hour — suited to medium patios, driveways, decking, cars and garden furniture. Compact at 4.6 kg with an aluminium telescopic handle for comfortable transport. Connects to a standard outdoor tap (min. 0.15 MPa). 5m mains cable with standard 13A plug. Can also draw water from a static source (bucket or water butt) using a suction hose (sold separately, part no. 2.643-100.0).
What it is designed for
Medium-sized patios and driveways, decking, cars, garden fences, bicycles and garden furniture. Air-cooled motor — allow the unit to rest between extended back-to-back cleaning sessions. For sustained heavy-duty or large-area use, the K4 WCM Flex range with water-cooled motor is recommended.
What’s in the box
- 1 × K4 Classic unit (1800W air-cooled motor)
- 1 × 6m high-pressure hose with Quick Connect fittings
- 1 × Vario Power spray lance — twist to adjust from gentle rinse to full pressure
- 1 × Dirtblaster lance — rotating spot jet for stubborn dirt, moss and grouting
- 1 × Quick Connect trigger gun
- 1 × Built-in detergent suction tube
- 1 × Built-in water filter to protect the pump
- Onboard storage for hose, lances and cable
Specifications
- Motor: 1800W air-cooled
- Max pressure: 130 bar
- Flow rate: 420 litres/hour
- Area coverage: approx. 30 m²/hour
- Hose length: 6m Quick Connect
- Cable length: 5m — standard 13A UK/EU plug
- Weight: 4.6 kg
- Model: 1.679-421.0
- Min. water supply: 0.15 MPa (standard outdoor tap)
- Max inlet temperature: 40°C
- Compatible with Kärcher K2–K7 Quick Connect accessories
- Can draw from static water source via suction hose (sold separately)
- 2-year guarantee — extendable to 5 years by registering at karcher.com within 28 days
- Store frost-free when not in use












