McKillans M22-15mm Pressure Washer Quick Connect Kit - Stainless Steel

In this review the McKillans M22-15mm Pressure Washer Quick Connect Kit is evaluated for homeowners and hobbyist detailers who want durable, corrosion resistant quick disconnects. The biggest reason to consider this kit is that it converts your pressure washer hose and accessories to full stainless steel quick connects, reducing leaks and improving hookup speed compared with many stock plastic fittings. The reviewer found the kit most compelling when the user confirms they have an M22-15mm hose, since the 15mm plug will not fit some gas or certain electric washers that use an M22-14mm connection.

Key Features

• Complete solution: The kit includes every connector and adapter needed to convert to stainless quick connects so users avoid buying individual parts separately.
• 304 stainless construction: Machined from medical grade 304 stainless steel to resist rust and maintain smooth operation over time.
• Viton O-rings: Upgraded Viton O-rings improve temperature and chemical resistance for fewer leaks under regular use.
• Compatibility notes: Clearly labeled compatibility for M22-15mm models such as SunJoe and Stanley helps buyers check fit before purchase.
• Garden hose adapters: Included male and female garden hose quick connects let you switch between garden hose and pressure washer fittings quickly.

Who It's For

This kit is ideal for DIYers, vehicle detailers, and homeowners who own a pressure washer with an M22-15mm hose and want a reliable, all-stainless quick connect solution for frequent use. It suits users who value longevity and reduced corrosion compared with stock fittings, especially in climates where metal parts can rust.

Customers who own gas washers or electric models known to use an M22-14mm connection, such as some Ryobi USA/CA, Greenworks, Active 2.0, Craftsman 1700/2100, or Karcher K1700/1800 machines, should look elsewhere or verify their hose size before buying, since the 15mm plug will not fit those models.

Pros & Cons

Pros

• High quality 304 stainless steel construction improves durability and resists corrosion.
• Viton O-rings add robust temperature and chemical resistance to reduce leak risks.
• Complete kit includes M22-15mm male and female plugs and garden hose adapters for versatile use.
• Easy, fast connections that many customers report speed up setup and use.

Cons

• Will not fit pressure washers that require M22-14mm fittings, so confirm hose size before purchase.
• Some users may still experience isolated leak issues depending on existing hose condition or installation technique.

Specifications

Our Verdict

The McKillans M22-15mm Quick Connect Kit is a practical, long lasting upgrade for anyone with a compatible M22-15mm pressure washer hose who wants faster hookups and fewer corrosion problems. Its 304 stainless fittings and Viton O-rings deliver tangible durability and reduced maintenance, making it good value for frequent users; just verify hose diameter to avoid compatibility issues.

Frequently Asked Questions

Will this kit fit my pressure washer?
Only if your hose uses an M22-15mm connection; it will not fit washers that require M22-14mm fittings.

Are the connectors prone to rust?
No, the connectors are machined from 304 stainless steel which resists rust and tarnish with normal use.

What do the O-rings handle?
The kit uses Viton O-rings for improved temperature and chemical resistance compared with standard materials.