M22 Pressure Washer Quick Connect Fittings – 4500 PSI Hose Adapter

Pressure Washer Quick Connect Fittings — M22 to 1/4" & 3/8" Hose Gun Adapter

Upgrade your pressure washing setup with these heavy-duty M22 Quick Connect Fittings. Engineered for a secure, leak-free connection between your pressure washer gun, hose, and lance, these adapters make swapping attachments fast and tool-free. Rated up to 4,500 PSI, they're built to handle demanding residential and commercial washing tasks with confidence.

Why You'll Love These Fittings

• Universal Compatibility: Fits M22-14mm and M22-15mm threaded connections — compatible with most major pressure washer brands and models.
• Dual Output: Adapts to both 1/4" and 3/8" quick-connect fittings for maximum versatility across different hose and accessory configurations.
• Premium Materials: Constructed from copper + stainless steel for exceptional corrosion resistance, durability, and long service life — even under high-pressure, high-moisture conditions.
• 4,500 PSI Rated: Handles the full force of powerful pressure washers without cracking, leaking, or loosening over time.
• Easy-Clean Surface: The stainless steel finish resists grime buildup and wipes clean effortlessly after every use.
• 4 Color Options: Choose from multiple color variants to easily identify your fittings at a glance.
• Tool-Free Installation: Quick-connect design lets you attach and detach in seconds — no wrenches required.

Specifications

• Thread Size: M22-14mm / M22-15mm
• Output Connection: 1/4" & 3/8" Quick Connect
• Material: Copper + Stainless Steel
• Maximum Pressure: 4,500 PSI
• Colors Available: 4 options
• Conversion Note: 1 inch = 25.4 mm | 1 mm = 0.0393 inch

Perfect For

• Connecting pressure washer guns, wands, and hoses
• Replacing worn or stripped M22 fittings
• Adapting between different hose sizes and brands
• Home exterior washing, driveway cleaning, vehicle washing, and more

For safe use and best practices with pressure washing equipment, refer to the U.S. Consumer Product Safety Commission (CPSC) for product safety guidelines.

Frequently Asked Questions

Q: What thread sizes do these pressure washer quick connect fittings support?

A: These fittings are designed to work with both M22-14mm and M22-15mm threaded connections, which are the two most common M22 thread standards found on pressure washers, hoses, and gun assemblies. They adapt to 1/4" and 3/8" quick-connect outlets. Note: 1 inch = 25.4 mm.

Q: What is the maximum PSI rating for these M22 adapter fittings?

A: These quick connect fittings are rated for up to 4,500 PSI, making them suitable for a wide range of residential and light commercial pressure washers. The copper and stainless steel construction ensures they maintain a secure, leak-free seal even at peak pressure.

Q: Are these fittings compatible with all pressure washer brands?

A: Yes — because M22-14mm and M22-15mm are industry-standard thread sizes, these adapters are broadly compatible with most major pressure washer brands including Sun Joe, Greenworks, Simpson, AR Blue Clean, Karcher, and others. Always verify your existing fitting thread size before purchasing to ensure a proper match.

Q: What materials are these pressure washer fittings made from?

A: The fittings are crafted from a combination of copper and stainless steel. This pairing provides excellent resistance to rust, corrosion, and high-pressure wear, ensuring a long service life even with frequent outdoor use and exposure to water and detergents.