Mjjc Coupons & Verified Offers | September 2026

Save on MJJC Pro V3.0 Foam Cannon, MJJC S V3.0 Foam Cannon with 31 manually verified Mjjc offers, updated for September 2026. Browse the latest Coupons, working discounts, and exclusive deals, with expired offers removed regularly.

Mjjc offers 4 coupon codes and 27 deals as of September 2026. Today's top offer: MJJC Foam Cannon Pro V2.0 On Sale. Codes are verified and updated daily.

👍

10%

OFF

10% Off Mjjc Foam Cannons & Accessories

Save 10% on Foam Cannon Pro V2.0, Foam Cannon S, and all Mjjc accessories. Upgrade your pressure washing setup for less.

👍

OFF

5% Off All Foam Cannons and Pressure Washers

Take 5% off Foam Cannon Pro V2.0, Foam Cannon S, and Classic models. Upgrade your pressure washing setup today!

👍

10%

OFF

MJJC Foam Cannon Pro V2.0 On Sale

Get your Foam Cannon Pro V2.0 at MJJC.

👍

10%

OFF

Mjjc Foam Cannons: Discounted Prices Available

Get deals on Foam Cannon Pro V2.0, Foam Cannon S, and other pressure washer accessories. Shop now and save!

$89

FOR

Buy MJJC Foam Cannon S V3 For $89

Upgrade your car cleaning routine with the MJJC Foam Cannon S V3 for $89, delivering powerful foam coverage, efficient cleaning performance, and convenient handling for professional or home detailing needs.

$109

FOR

Buy MJJC Foam Cannon Pro for AVA Pressure Washers For $109

Upgrade your pressure washing setup with the MJJC Foam Cannon Pro for AVA Pressure Washers for just $109, delivering rich foam coverage and efficient cleaning performance.

60%

OFF

Bosch Adapter Reduced by 60%

18%

OFF

Karcher K-Series Adapter Discounted by 18%

50%

OFF

50% Off Foam Cannon Repair Kit

22%

OFF

Extension Wand Now 22% Less

40%

OFF

Foam Cannon S Gets 40% Price Drop

15%

OFF

Drying Towel Savings: 15% Off Today

3011%

OFF

30% Price Cut on 1.1mm Orifice Nozzle

35%

OFF

Pressure Washer Gun with Swivel Slashed by 35%

25%

OFF

25% Off Short Trigger Gun Upgrade

2020%

OFF

Foam Cannon Pro V2.0 Now 20% Less

60%

OFF

Save on MJJC Extension Wands

Enhance your cleaning power with savings on Extension Wands from MJJC. Explore a wide selection of foam cannons, pressure washer accessories, and detailing tools.

20%

OFF

Filter Mesh for Foam Cannon

35%

OFF

Spare Bottle for Foam Cannon

Enjoy a 35% discount on the Spare Bottle for Foam Cannon, keeping you prepared for any job.

10%

OFF

Free Mjjc Drying Towel with Purchase

Get a free Mjjc Drying Towel when you purchase any Mjjc car care product. Perfect for achieving a spotless finish.

55%

OFF

Microfiber Wash Mitt

The Microfiber Wash Mitt is 55% less, providing a gentle yet effective cleaning solution.

15%

OFF

1.1mm Orifice Nozzle

Get 15% off the 1.1mm Orifice Nozzle today, perfect for precise foam application.

40%

OFF

Pressure Washer Gun with Swivel

Experience a 40% price cut on the Pressure Washer Gun with Swivel, making tough jobs easier.

30%

OFF

Upgrade Your Pressure Washing

Get a short trigger gun for your pressure washer setup at Mjjc. This deal helps you enhance your cleaning efficiency and control.

25%

OFF

Foam Cannon Pro V2.0

Grab 25% off the Foam Cannon Pro V2.0 to elevate your cleaning power and achieve professional results.

50%

OFF

Foam Cannon Repair Kit Discounted by 50%

20%

OFF

Makita Adapter Sees 20% Savings

30%

OFF

30% Off Drying Towel for a Spotless Finish

15%

OFF

Short Trigger Gun Reduced by 15%

10%

OFF

Nilfisk Adapter Now 10% Off

40%

OFF

Karcher K-Series Adapter Gets 40% Price Cut

Customer Reviews

4.0

Average Rating

Total Reviews

Linda Phillips

★★★★☆

4 days ago

Good quality, worth the price

Last week I was trying to figure out which MJJC foam cannon adapter I needed for my Bosch pressure washer and after some digging, I ordered the right one. It's well-made and feels durable, definitely a step up from cheaper options. I just wish the shipping was a little faster, but overall, happy with the purchase.

✓ Reply submitted. Will be published after approval.

Mjjc Community Discussion

Share tips, ask questions & help fellow shoppers save more

AnjaliR

5 days ago

My MJJC coupon code isn't working for the S V3.0 foam cannon. Tried one I got from a newsletter signup. Anyone else had issues or know of a current working code?

S SanjayG 5 days ago ✓ Best Answer

Sometimes the newsletter codes are for new customers only, or they have an expiry date. Did you check the fine print? I used a Black Friday deal last year, those usually work without a hitch.

A AnjaliR 5 days ago

Hmm, I'm pretty sure I'm a new customer. The fine print didn't say anything obvious. It's just showing 'invalid code'.

N NehaP 5 days ago

Yeah, their codes can be a bit tricky. Maybe try clearing your browser cookies?

G GauravJ 5 days ago

I had a similar problem last month. Turned out the code was only for certain bundles, not standalone products. Maybe that's it?

R RohanK 5 days ago

I usually look for influencer codes on YouTube. Sometimes those give a small percentage off and work more reliably than generic ones.

A AnjaliR 5 days ago

Any specific ones you'd recommend looking up?

12 Responses (3) Views (62)

KiranS

2 weeks ago

Just got my MJJC Pro V3.0 Foam Cannon and it's awesome! Foam is super thick. Quick question though, anyone know the best orifice size for a lower pressure washer? Mine's only 1600 PSI and I want to get the most out of it.

R Rajesh88 2 weeks ago ✓ Best Answer

Glad you're liking it! For 1600 PSI, you're definitely gonna want the 1.1mm orifice. It'll help build better pressure and give you that super thick foam you're looking for. The cannon usually comes with a 1.25mm installed, so you'll need to swap it out.

P PriyaK 2 weeks ago

Yep, 1.1mm is the way to go for lower pressure. Made a huge difference for my Karcher.

K KiranS 2 weeks ago

Ah, okay! I thought the default one was fine. Thanks for the tip, Rajesh!

D Deepak77 2 weeks ago

Following this, I have a similar pressure washer and was wondering the same.

V VivekM 2 weeks ago

Mine came with a 1.25mm and I just left it. Still works pretty well, but maybe I should try the 1.1mm then?

R Rajesh88 2 weeks ago

You'll notice a definite improvement in foam consistency. It's a cheap and easy upgrade.

4 Responses (3) Views (34)

Browse Automotive Categories

Explore related categories in this topic

Detailing & Cleaning Oil & Fluids Tools & Equipment

View All Automotive →

More Automotive Stores

Explore other stores in this category

Or Orionmotortech Kn Knife Pivot Lube EU EUROGATOR Pl PlanetSafe Lubricant... Va Valvoline AA AAA AUTO TOOL Au Auto In The Box Di DiagMart ET ETENWOLF JA JACO Ki Kingbolen Ob Obdprice

View All Automotive Stores →

This page may contain affiliate links. If you make a purchase through these links, we may earn a small commission at no extra cost to you. This helps us keep our service free and continue bringing you the best deals.