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14mm Downstem Diffuser
Get ready to find your new favorite smoking tool. These SMOKEA replacement glass on glass downstem diffusers are made with high-quality glass ground joints. Also known as a downpipe, these diffusers are an essential part of your bong or water pipe.
Diffusers force your smoke from the bowl to the water, filtering it as it goes. Keep your bong clean and fresh with a new diffuser.
The downstem features a 14mm male ground joint and 14mm female bowl joint. Each downstem is diffused with several slits at the bottom of the stem. These slits break up your smoke into smaller bubbles, resulting in a smoother hit.
This 14mm downstem diffuser also helps you taste more of your herb and less of the butane for a tastier smoking experience. Use this diffuser when you want an easy smoke sesh plus easy clean up when you’re done.
These diffusers are available in several lengths. Replace your broken diffuser or treat yourself to a new, durable glass one. Not sure what size you need? Check out our adjustable downstem instead.
Product Features
- 14mm Male to 14mm Female
- Diffused Downstem
- High Quality Glass on Glass Joints
- Available in Several Lengths
- Measured from Bottom of Ground Joint
Ground Joint | 14mm Male |
Bowl Joint | 14mm Female |
Length | 2.5"–5" |
Shop SMOKEA®’s 14mm downstem diffusers and get free shipping on orders over $10 in the US. Why wait? Get smoking today.
Due to COVID-19 and a limited staff, fulfillment times may be delayed. For more information on our COVID 19 Status click here.
SMOKEA® proudly offers free shipping on orders to the contiguous 48 states. Packages are shipping via USPS, FedEx, UPS or DHL Express. Orders with Free Shipping can expect delivery times of 3-16 business days. Orders that pay for expedited shipping have an average shipping time of only 2-3 business days! Click here to read our full Shipping Policy.

Low Price Guarantees. While most company's have long lists of things you need to qualify to have a price matched, SMOKEA® makes it easy. Oh yeah, and we don't "match" prices we BEAT prices! Simply contact us with the information including the competitor's product listing and we'll create a coupon code for you to use to get a BETTER price. The Guarantee doesn't end when you receive a better price. If any of your ordered products drop in price within the return/exchange period, you will be given the difference in store credit upon request. The Low Price Guarantee is just another way that SMOKEA provides it's customers with the ease and convenience of getting all of your smoking supplies in one place at the best prices! Click here to read more about our low price guarantee or click the "Start Here" button below to get started.
We hope that you will be delighted with your items however, if you would like to return your items for any reason at all, you may do so within 30 days of receiving your order. Items returned must be in a new and unused condition and are the responsibility of the customer until they are received by SMOKEA.
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Great downstream, works great and the quality is nice

Love this downstem, I was looking for one thin enough to fit my 8inch bong and this one is perfect and goes well with my bowl piece. Makes a huge difference in smoke distribution

Can’t be happier, I ordered a bong stem . My grandpa has since passed , and I tried 6 companies to get a stem for his bong. And after a huge disappointment with 5 other companies. Y’all got it right. Couldn’t be happier, I’ll use my grandfathers bong hopefully for the rest of my life. Thanks smokea, made me a happy man. I definitely will be shopping here from now on.

Good. Bought a German Roor off eBay that required a 14mm/14mm stem. Found it here and even bought a spare. Good prices & print shipping. Jim

Perfect fit. Nice quality, even cuts for diffuser.