Greenworks Foam Cannon for Pressure Washers — Premium 1 L with 1/4" Quick-Release, Adjustable Foam & Fan

The Greenworks Premium Foam Cannon delivers dense, adjustable foam to loosen road grime, bugs, sap and dirt for safer, more effective vehicle washing.

Designed for car and truck enthusiasts who want a professional pre-wash, this foam cannon attaches to pressure washers and produces a mountain of suds that clings to surfaces, helping contaminants lift before contact cleaning. It combines a 1 L wide-mouth bottle, a 1/4" quick-release fitting, and controls for both spray width and foam thickness so you can tailor coverage to the job—whether rinsing a motorcycle or soaking a pickup.

How does the foam cannon improve paint-safe washing?

By applying thick foam before any contact, the cannon loosens grit and sticky residues so you reduce the need for aggressive scrubbing. Less friction means fewer swirl marks and safer hand-washing once the wash mitt touches the paint.

• Produces clingy foam that lifts dirt off surfaces.
• Adjustable flow and fan pattern to control foam concentration.
• Works with standard automotive snow or foam detergents.
• Reduces manual rubbing and the risk of abrasion.

Will it fit my pressure washer and how easy is it to use?

The Greenworks cannon is built with a 1/4" quick-release fitting for fast attachment to compatible pressure washer wands and lances. Its simple bottle design and large opening make mixing and refills straightforward, while the regulator and fan knob let you dial in results without extra tools.

• 1/4" quick-release fitting for common pressure washer setups.
• Wide-mouth 1 L bottle for easy mixing and pouring.
• On-body controls for foam thickness and spray width.
• Compatible with detergents formulated for foam cannons.

What performance specs should I expect during use?

When paired with a pressure washer capable of the recommended outputs, the cannon supports high-pressure foam application and efficient rinsing. Check your washer’s PSI and GPM to match the cannon’s operating envelope for best foam density and coverage.

• Supports up to 3700 PSI when used within pressure washer limits.
• Handles up to 3.0 GPM for strong detergent delivery and rinse flow.
• 1 L bottle holds enough solution for multiple vehicle passes.
• Wide fan range adapts from targeted spots to full-panel coverage.

How do I mix solution and maintain the unit?

Use a diluted automotive snow foam or concentrated car wash detergent following the product label, then pour into the wide-mouth bottle to avoid spills. After use, flush the cannon with clean water to prevent buildup, and store with the bottle empty and dry to prolong seals and fittings.

• Mix detergent per manufacturer recommendations before filling the bottle.
• Rinse through the cannon until water runs clear after each session.
• Inspect O-rings and quick-release for wear periodically.
• Store out of direct sunlight to protect bottle and plastic fittings.

Who is this for: The Greenworks Premium Foam Cannon is aimed at DIY detailers, weekend washers, mobile detailers, and small shops who want a cost-effective way to apply clingy, controlled foam to cars, trucks, motorcycles, RVs and other vehicles. If you own a compatible pressure washer and value safer, less abrasive cleaning with quick setup and tidy refills, this tool makes the pre-wash step faster and more effective.