Greenworks Foam Cannon pressure washer attachment — 1L bottle, adjustable foam & fan pattern for thick clinging suds

Greenworks Premium Foam Cannon creates thick, clinging foam to loosen road grime and make rinse-and-wash detailing faster and safer.

Designed for serious car and truck care, this foam cannon mounts to pressure washers to produce a dense blanket of suds that lifts dirt, bugs, sap, and dust before you touch the paint. Its adjustable fan pattern and flow regulator let you tune both foam thickness and spray width so you can switch from a broad pre-soak to a narrow, concentrated application. Built for convenience, the unit includes a one-liter bottle with a wide-mouth opening for easy filling and a 1/4" quick-release fitting for fast attachment.

How does the Greenworks foam cannon improve vehicle washing?

By applying foam that clings to the surface, the cannon breaks the bond between contaminants and paint, reducing the need for vigorous scrubbing. That minimizes swirl marks and helps produce a cleaner finish with less elbow grease.

• Thick suds loosen road grime and bug residue before contact
• Adjustable foam density prevents wasted detergent
• Wide coverage decreases wash time on larger vehicles
• Compatible with pressure washers up to 3700 PSI for strong delivery

What settings can I change to get the foam I want?

The cannon offers two user controls: a fan-pattern adjustment for spray width and a flow regulator for foam thickness. Together they let you dial in anything from a light, even pre-rinse to a rich, clinging snow-foam for heavy contamination.

• Fan pattern: narrow to wide sweep for targeted or broad coverage
• Flow regulator: increases or reduces detergent-to-water ratio
• Bottle capacity: 1 L holds enough solution for most detail sessions
• Wide-mouth bottle opening: simplifies mixing and refilling on the go

Is it durable and easy to connect to my pressure washer?

The build is designed for regular use during seasonal detailing and weekend maintenance. A 1/4" quick-release fitting makes attachment and removal fast, while materials and seals are chosen to handle the high pressures this tool supports.

• Rated up to 3700 PSI for robust performance
• Supports up to 3.0 GPM to maintain consistent spray flow
• 1/4" quick-release fitting for tool-free connections
• Wide-mouth bottle reduces spills and speeds preparation

Which cleaners work best with this cannon and how much should I use?

Most automotive foaming detergents and dedicated snow-foam solutions perform well; choose a pH-balanced product if you’re concerned about protective wax or sealants. Start with the manufacturer-recommended dilution and adjust the flow regulator for desired foam thickness.

• Use car-specific foaming shampoo or snow-foam concentrates
• Follow dilution instructions on the detergent label
• Adjust flow regulator before applying to the entire vehicle
• Rinse thoroughly after foaming to remove residue

Who is this for? Detailers, enthusiasts, and anyone who wants a faster, safer wash routine will benefit from the Greenworks Premium Foam Cannon. It’s suited to weekend car-care hobbyists, mobile detailers, and owners of trucks or SUVs who need wide coverage and strong foaming action. If you use a pressure washer for vehicle cleaning and want more control over foam volume and spray width, this unit streamlines preparation and helps protect finishes by removing contaminants before contact.