Heliwoo Pressure Washer Adapter Kit: M22 14mm to 3/8 Quick Connect, Brass, 4500 PSI

Overview

The Heliwoo Pressure Washer Adapter Set is a compact, brass-built kit designed to bridge M22 14mm threaded connections to a standard 3/8 inch quick-connect system. The solid brass construction delivers a clean, tactile feel as you tighten and release fittings, helping you work more efficiently during cleaning tasks. This kit is built for durability under frequent use, from home projects to more demanding cleanup tasks around the yard and driveway.

With an emphasis on reliable performance, the adapter minimizes fuss during setup and disassembly. The brass fittings feel sturdy in the hand, and the quick-release mechanism delivers a crisp click when engaged, so you know the connection is secure. While the design centers on practical compatibility, you’ll notice a smoother workflow as you move between hose, gun, and pump configurations.

What’s included

• 1 pack M22 14mm swivel + 3/8 inch quick disconnect female socket
• 1 pack M22 14mm swivel + 3/8 inch male plug

Key specifications

• Inside diameter is 14mm (NOT 15mm) to match compatible hardware
• Max working pressure: 4500 PSI
• Max temperature: 300°F
• Material: Brass for corrosion resistance and durability
• Provides quick assembly and disassembly for workflow efficiency

Real-world uses

Use this kit to convert existing M22 thread-on couplings on your gun, hose, or pump so you can connect a 3/8 inch quick-connect fitting. It’s well suited for garage, driveway, patio, and vehicle cleaning tasks where speed and reliability matter.

Benefits at a glance

• Brass fittings offer solid feel and durable performance
• Fast, tool-free changes between components
• Compatible with common pressure washer setups for versatile use
• Corrosion resistance helps maintain a clean, long-lasting connection

Care and support

Note the 14mm ID for compatibility, and keep fittings clean and dry when not in use. If you have questions or need installation tips, our 7x24 customer support team is available to help with fittings, configurations, and troubleshooting.