Griot's Garage Foam Cannon for Pressure Washers — 33.8 oz Jar, Adjustable Nozzle & Flow Valve for Thick Clinging Foam

The Griot's Garage Brilliant Finish Foam Cannon turns pressure-washer soap into thick, clingy foam that lifts dirt away from paint for a safer, more effective wash.

This foam cannon is built for car enthusiasts and detailers who want a faster, gentler clean. Its precision-machined aluminum manifold and rifled barrel create dense suds that stick to vertical surfaces, giving detergent more dwell time to loosen grime. With an adjustable nozzle and integrated flow valve, you can dial in foam coverage and spray pattern for everything from broad panel coverage to targeted detail work. The included wide-mouth 33.8 oz jar makes mixing simple and stays stable during use, and the unit fits most pressure washers for broad compatibility.

How does the foam cannon improve washing safety and results?

The cannon produces a thick, clinging lather that helps separate dirt, grit, and road film from paint so you can rinse away contaminants before touching the surface. That reduces mechanical contact and the risk of swirl marks or scratches during a hand wash. By maximizing soap coverage and dwell time, it makes subsequent rinsing and drying more effective.

• Rich, adhesive foam lifts contaminants before contact
• Longer detergent dwell time improves loosening of grime
• Reduces need for aggressive scrubbing or repeated passes

What spray patterns and foam thickness can I achieve?

Adjust the rubber-grip nozzle from a wide 40° fan to a narrow 0° stream to suit different tasks — broad coverage for doors and hoods, focused reach for rooflines or wheel wells. The built-in flow valve controls soap concentration and foam density with a simple twist, so you can switch between light rinsing foam and thick, clinging suds depending on how dirty the vehicle is.

• 40° wide fan for quick panel coverage
• 0° narrow stream for targeted or high-reach cleaning
• Integrated valve for on-the-fly foam thickness adjustments

Which pressure washers and soaps are compatible with this foam blaster?

The design accepts most consumer pressure washers and comes with a 33.8 oz wide-mouth jar for easy measuring and pouring. It is also compatible with Griot's Garage 22 oz and 35 oz bottles, allowing you to use favorite shop soaps or recommended Griot's formulas. A weighted silicone pick-up tube ensures consistent suction of soap even when the bottle tilts or sits at odd angles.

• Fits most pressure washers with standard connectors
• Works with many car wash soaps and Griot's Garage bottles
• Weighted pick-up tube maintains consistent soap flow

How should I maintain and store the foam cannon for long life?

Rinse the cannon with clean water after every use to remove residual detergent and prevent clogging. Keep a rebuild kit on hand for periodic maintenance to preserve foam quality and replace wear items quickly. Store the unit dry and away from freezing temperatures to protect seals and aluminum components.

• Flush with water after each washing session
• Use the Griot's Garage rebuild kit for regular tune-ups
• Store dry and avoid freezing to protect seals

Who is this for: The Brilliant Finish Foam Cannon is made for car owners, detailers, and RV or truck keepers who want an efficient, lower-risk washing method. It suits hobbyists seeking better results at home and professionals who need reliable foam coverage, adjustable spray control, and simple maintenance to speed up routine cleaning while protecting painted surfaces.