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Male and Female Adapters for Water Blaster Hoses
Water blaster manufacturers sure try to make it hard by having different quick connect fittings. There are 5 different quick connect fittings we know of that are common across all machines, and we stock them all. Don't expect any help from the water blaster manufacturers, they want you to just buy their overpriced lesser accessories. But its not hard to get the right adapter to get a better set up. Please understand we are the ones helping here, not the ones trying to make it hard. There is no guide and manufacturers wont give us the information, we have spent years visiting hard ware stores measuring fittings, trying fritting (and so far not getting thrown out) trying to work this all out, and we are pretty much there.
If you have a Karcher, you need #1.
If you have a Royobi or Ozito you probably need #5 but some older machines had #2. Theres only a 2 mm difference between these. The new Ryobi 2030 models are #5
If you Have a Bosch it is normally # 2 or #4.
Here's is a guide we made, to be sure your get the right one make sure you measure accurately. If you do get the wrong one, it's no problem to swap but its a lot easier to measure and get it right the first time.
Please let us know your model and what it fits, and we will build a list to help others.
To get the female fitting to match, measure the male fitting to identify the #, and then order the corresponding female fitting.
All of these connect to the M22 14 thread,
Some older Stihl and Nilfisk machines have a special thread about 1mm off standard M22 14, probably to intentionally make things hard, we have new adapters to convert these to M22 14 threads arriving end of January 2026.
The thread on most short professional triggers like the Rockcar Professional Water blaster Trigger Upgrade is G 3/8 We have an adapter to convert that to M22 here called "2 threaded Missing Link Connecting Adapter to connect foam trigger to hose connector M22-14mm male;G3/8 male"
We'll keep adding and improving this guide. Thanks for your help and support, Adam.
You will need one of these, please measure accurately, #2 and #4 are very similar.
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Rockcar Male High Pressure Connector #1 for Hose Quick Connect Karcher K Series
RockCar
10+ in stock
This adapter fitting has the M22 Standard male thread at one end (the same that connects to the Rockcar flexible green hose), and has the Karcher q...
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Karcher K Hose Adapter - Female #1
RockCar
10+ in stock
If you have a Chemical Guys Snubby and a Karcher K Series and are trying to figure out how to connect them, this is what you need. The inner compon...
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Rockcar Male High Pressure Connector #2 For Hose Quick Connect Bosh and some Black & Decker
RockCar
10+ in stock
This adapter fitting has the M22 Standard male thread at one end (the same that connects to the Rockcar flexible green hose), and has the quick rel...
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Bosch, Ava, Stihl, Nilfisk Hose Adapter - Female #2
RockCar
10+ in stock
Connects to the hose of most Bosch, Ava, Royobi, Dewalt, Nilfisk, Huskvanrna, and machines. If you have a Chemical Guys Snubby and a Bosch water ...
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Rockcar Male High Pressure Connector #3 for Hose Quick Connect Lavor, Vax, Briggs, Bauker
RockCar
10+ in stock
his adapter fitting has the M22 Standard male thread at one end (the same that connects to the Rockcar flexible green hose), and has the quick rele...
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Rockcar Hose Adapter Female # 3 for Lavor, Crafsman, Parkside, Vax
Lovecars
10+ in stock
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Rockcar Male High Pressure Connector #4 for Hose Quick Connect, Some Black & Decker and A&R
RockCar
10+ in stock
This adapter fitting has the M22 Standard male thread at one end (the same that connects to the Rockcar flexible green hose), and has the quick rel...
View full details
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Hose Adapter Female #4
RockCar
10+ in stock
If you have a Professional water blaster trigger and a Bosch water blaster and are trying to figure out how to connect them, this is probably what ...
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Rockcar Male High Pressure Connector #5 Hose Quick Connect for some newer Royobi, Daewoo, Bort, Patriot
Lovecars
10+ in stock
This adapter fitting has the M22 Standard male thread at one end (the same that connects to the Rockcar flexible green hose), and has the quick rel...
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Rockcar Female Hose Adapter #5, Some newer Royobi, Daewoo. Bort, Elitech, Patriot
Lovecars
10+ in stock
This is the female quick connect fitting that fits the #5 male fitting. In New Zealand this fits some (not all), newer Royobi and Ozito models.
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2 threaded Missing Link Connecting Adapter to connect foam trigger to hose connector M22-14mm male;G3/8 male
RockCar
10+ in stock
This is the often hard to find missing link adapter. This is the connector you need to connect the Chemical Guys Snubby or Rockcar Trigger to the...
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Rockcar M22 Male-to-Male Adapter – High-Flow Brass Joiner
Lovecars
10+ in stock
Sometimes, you just need a solid, no-nonsense connector that works every time. The Rockcar M22 Male-to-Male Adapter is designed for exactly that – ...
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Try and Return Pack Male (5 adapters, prepaid return bag)
RockCar
10+ in stock
Not sure what fitting you need. We'll send you one of each fitting, and a return bag. Keep the one that fits, send the other 4 pack in the prepaid...
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Try and Return Pack Female (5 adapters, prepaid return bag)
RockCar
10+ in stock
Not Sure which female hose fitting you need. Buy this pack, we'll send you one of each (5 adapters), and a return bag. Pay $100 now, we'll refund y...
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