McKillans Pressure Washer Quick Connect Kit M22-14mm to 3/8 in - Brass

In this review the McKillans Pressure Washer Quick Connect Kit is evaluated for homeowners and contractors who need a durable, all-in-one quick connect solution for gas pressure washers. The kit stands out as a straightforward way to convert standard M22 connections to quick disconnects, and the single biggest reason to consider it is its brass construction combined with upgraded Viton o-rings for greater chemical and temperature resistance, which translates to longer life and fewer replacement parts.

Key Features

• Complete kit: Includes the common connectors and adapters needed to convert your pressure washer hose and accessories to quick connects so swapping tools is faster and simpler.
• M22-14mm sizing: Designed specifically for M22-14mm hoses found on gas pressure washers, ensuring proper fit on compatible models when matched correctly.
• Brass construction: Machined brass bodies resist wear and stand up to repeated connections better than plastic alternatives.
• Viton o-rings: Uses Viton material for o-rings which improves resistance to heat and chemicals compared with standard rubber, reducing leak risk when installed correctly.
• Smooth operation: Precision machining promotes smooth connect and disconnect motions, making attachment changes simple even during yard work.

Who It's For

This kit is best for owners of gas powered pressure washers that use the standard M22-14mm hose connection who want to convert multiple connection points to quick disconnects to speed up switching nozzles, surface cleaners and extension wands. It is also suited for users who value durability and are replacing worn fittings with brass parts.

It is not appropriate for electric pressure washers that use M22-15mm fittings, including several popular consumer electric models; using a 14mm plug on a 15mm hose can cause leaks, so those users should look for a kit specified for 15mm fittings.

Pros & Cons

Pros

• Solid brass build provides durable, long lasting connectors.
• Viton o-rings improve chemical and temperature resistance for more reliable seals.
• Complete set contains both male and female M22-14mm adapters and garden hose quick connects to handle most conversions.
• Smooth, well-machined operation makes swapping tools easy.

Cons

• Only compatible with M22-14mm hoses; will leak on washers that require 15mm plugs.
• Some customers report leakage when mismatch or improper installation occurs, so careful verification is required before purchase.

Specifications

Our Verdict

The McKillans quick connect kit is a practical, value-minded option for gas pressure washer owners who need a reliable set of brass quick disconnects and adapters. Its brass construction and Viton o-rings deliver durability and improved sealing when matched to the correct M22-14mm hoses, making it a smart upgrade for faster tool changes and longer service life.

Frequently Asked Questions

Will this kit fit my electric pressure washer?
No, this kit is made for M22-14mm hoses common on gas units and will not fit electric models that require a 15mm plug.

What is the material of the fittings?
All connectors in the kit are machined from brass for durability.

What about leakage issues?
When installed on compatible M22-14mm hoses the Viton o-rings reduce leaks, but mismatched 15mm hoses or improper installation can cause leakage.