Chemical Guys, Big Mouth Max Foam Cannon for Pressure Washers, 34 oz Bottle

Chemical Guys, Big Mouth Max Foam Cannon for… is our top-ranked pick in Foam Cannons with a 9.2/10 Detail Pro Rating. Expect to pay a premium for it.

Drawn from the ranking data on this page: Detail Pro Rating, Amazon rating, review count and price versus the rest of the category.

A single score blended from every independent read-out we could find. Amazon carries the most weight, a hands-on video review next. Sources we could not find are left out and the rest are reweighted, so nothing is invented.

No coverage found yet from: Hands-on video review, Reddit owners, Detailing forums, Expert review.

• BIG MOUTH MAX FOAM CANNON (EQP324) – Trusted by detailers and DIYers, this pressure washer foam cannon blasts thick, clinging suds to wash cars, trucks, SUVs, boats, and more with ease
• WIDE MOUTH DESIGN – The car wash foam cannon has a large fill opening that prevents spills and makes adding soap quick and mess-free; 34 oz bottle holds enough solution for multiple washes
• MAXIMUM FOAM OUTPUT – Adjustable nozzle and air injection system of this Chemical Guys foam cannon delivers thick, shaving cream–like foam that clings to surfaces, loosening dirt and grime
• VERSATILE CLEANING TOOL – Perfect for automotive washes, boat cleaning, siding, patios, and more; this car foam sprayer safely cleans a wide variety of painted, coated, and sealed surfaces
• PRESSURE WASHER FOAM GUN BUILT TO LAST – Heavy-duty construction with stainless steel fittings and durable seals ensures reliable performance and long service life

How does it rank?

It is #1 of 15 foam cannons we track, with a Detail Pro Rating of 9.2 out of 10. See the full foam cannons ranking.

What do Amazon owners say?

Owners rate it 4.6 out of 5 across 1,952 reviews, as of October 19, 2026.

How much does it cost?

$100 on Amazon at our last check on October 19, 2026. Prices change often, so confirm on Amazon before buying.