Big Mouth Bubbler 6.5 Gal Plastic Siphonless Fermenter with Harness

  • Big Mouth Bubbler 6.5 Gallon Plastic Siphonless Fermenter with Harness
Big Mouth Bubbler 6.5 Gallon Plastic Siphonless Fermenter with Harness Big Mouth Bubbler 6.5 Gallon Plastic Siphonless Fermenter Big Mouth Bubbler 6.5 Gallon Plastic Siphonless Fermenter's Spigot

Big Mouth Bubbler 6.5 Gal Plastic Siphonless Fermenter with Harness

SKU 42903



Product Details

Make your brew day easier and your beer better with the siphonless Big Mouth Bubbler®

The most helpful fermentor ever invented just got even better. Less effort. Better, clearer beer. Don’t just cut out the hassle of cleaning, cut out siphoning altogether! Porting this revolutionary fermentor makes transferring as easy as the turn of a valve. No extra equipment, no extra cleaning, just a sanitized fermentor.

Now Including our Universal Harness for lifting, transporting and ensuring your Big Mouth Bubbler lid stays in place during even the most intense fermentations.

The Siphonless Big Mouth Bubbler® isn’t just easier to use. It’s better for your beer. Fight oxidation and contamination by keeping your fermentor closed for transfers. Never open the lid to insert an auto-siphon, just turn a valve and you’re set. Best of all, you’ll have clearer beer. Gently rack liquid from the spout into secondary without disturbing the trub.


  • Ported Big Mouth Bubbler® Plastic Fermentor
  • Universal Harness for Big Mouth Bubbler
  • Spigot
  • Single Port Universal Lid*

Important Note: Do not fill any Plastic Big Mouth Bubbler® fermenters with very hot liquid - temp should not exceed 140 degrees Fahrenheit (60 Celsius)

Additional Information



BIG MOUTH BUBBLER® Product Specifications:

Capacity: 5 gallon 6.5 gallon
SKU: 42904 42903
Weight: 3.4 4
Height (w/lid, closed): 22" 23"
Diameter: 10" 11"
Mouth: 5.5" 5.5"
Fermentor Material: PET PET

Customer Reviews

Based on 61 reviews
Real time and back saver

I’ve been brewing for more than 15 years and wish I would have bought this sooner. Since I generally do this on my own, the harness makes carrying a full carboy so much easier! I don’t strain my back bending and lifting. The real time saver comes from using the built-in valve to dispense mead into bottles. Rather than using a siphon, tube and wand, I can simply open and close the valve to fill. The only negative was trying to figure out how to fit the harness on the jug. I highly recommend this product.


One fermenter dripped at bottom where manufacturer molded it,got no response from you when I reported it,so I didn't send it back only option given ,throw it away,take the loss, so thats my review

Patrick L.
6 1/2 gal. bubbler.

The first one I purchased had a good tight fit between the fermenter and the lid. The second one has a very poor fit. When not in use and stored on its side the lid falls out or it falls out with the slightest touch. It is way to lose. Your quality control needs improvement.

Everything I needed

First time home brewer here. Purchased 2 6.5 gal big mouth bubblers to start making some blackberry wine. Havent used them yet, but I bought them because they looked easy to clean, safer than glass (toddlers in the house), and I can do batches of beer in them too. Looks like a solid product so far

Perfect way to upgrade my kit!

Still new at homebrewing and was using a 1 gal kit. Added two 6.5 gal big mouth bubblers and am now in my second batch. they work great and I couldn't be happier. Looking forward to growing my skill set with these awesome fermenters.