Pneumatic Hoses (4 mm)
Pneumatic Hoses (4 mm): Overview
These LEGO® pneumatic hoses carry the air in a Technic pneumatic system. Handy for completing a set, replacing a hose that has gone stiff or building your own air-powered MOC.
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More about Pneumatic Hoses (4 mm)
About Pneumatic Hoses (4 mm)
In a LEGO pneumatic system the hose links the pump, valves and cylinders, so the air you pump in ends up where the movement happens. The length in the name is given in L, the same unit as a stud: 1L is 8 mm. You will find both cut hoses and precut V2 hoses.
- Flexible tube with a 4 mm diameter
- Length shown in L and in centimetres
- Used in LEGO Technic sets with pneumatic functions
Finding the right part
- Measure the route in your model and pick a hose that is slightly longer, so it does not pull on the connections
- Rebuilding a set? Look up the exact parts in the parts finder
- Looking for pumps, cylinders or valves? Browse pneumatic parts
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