Karcher HK 4 High Pressure Hose Upgrade Kit for Post 1992 K2 Models

The Karcher HK 4 High Pressure Hose Upgrade Kit is designed to modernise older Karcher K2 to K3 pressure washers, converting them from the original screw-thread connection system to the current Quick Connect standard. Compatible with machines manufactured between 1992 and 2010, this upgrade kit provides a practical solution for extending the life and improving the functionality of your existing pressure washer.

The Quick Connect system, introduced by Karcher in 2010, eliminates the need for time-consuming screw-thread connections, allowing for rapid hose attachment and removal with a simple click-in mechanism. The kit includes a Quick Connector Adapter that seamlessly converts your older pressure washer to accept modern Quick Connect hoses, along with a replacement hose that provides additional reach and convenience.

The new connection system features a straightforward yellow button release mechanism, making it simple to disconnect hoses safely when changing attachments or storing your equipment after use. This upgrade is ideal for tradespeople and contractors who want to maintain their reliable older Karcher machines while benefiting from the improved ergonomics and efficiency of modern quick-connect technology.

Features and Benefits:
• Easily upgrade your older Karcher K2 and K3 pressure washers to the modern Quick Connect standard
• Converts screw-thread connections to Quick Connect fittings for a simpler, faster setup
• Enjoy extra reach and easy hose connections with the included hose that clicks into place effortlessly
• Connects easily to the Quick Connect Hose, with simple release via the yellow button
• The Quick Connect design allows for safe, simple hose removal and storage when not in use