Cessna Ventube™

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Part# 05-04091
MFR Model# SI-1-2


Fits the Following Cessna models:
120, 140, 150, 152, 170, 172, 175, 180, 182, 185, 190, 195, 205, 206, 207, 210 thru F, and 305's.

Comfort is key
The Ventube™ will give you and your passengers greater comfort by controlling the air flow and reducing the vent noise in your Cessna cabin.

Reliable air flow control
Ventube™ works simply and reliably to control air direction and flow. It is designed to replace your Cessna's original pull-out vent tube.

How it works
Ventube™ is a plastic unit consisting of an exterior tube and a lockable interior tube with a cap. Just turn the interior tube cap clockwise which pulls the cap against an O-ring seal to close the vent. Airflow control is accomplished by extending or retracting this interior tube. A simple twist of the interior tube controls air direction. The locking cap, friction rings and coins, tolerance between the tubes, and the O-ring seal work together to provide quiet and controlled air flow.

Sold as a pair.

Replacement O-Rings: 05-22852
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -



Should have done this years ago. Seals well. Easy install.

Thacker A Verified Purchase


January 31, 2023

Great product

Richard D Verified Purchase


September 21, 2022

Perfect fit and and simple installation in our 49 C-170.

Mark M Verified Purchase


May 12, 2022

Installation was very easy. They seal up great in the cold air and provide higher velocity airflow in the summer. STC paperwork included.

Taylor S
October 16, 2020

Easy installation and stay locked in flight Nice

Ken R
November 27, 2019

Installed into my Cessna 150. They work great. Drilled a hole into the plastic for the outside air temperature thermometer on the passenger side and it easily fit. Took about an hour or so to install under the direction of an A&P who signed off on the alteration.

Edward S
December 28, 2018

Easy install, works as advertised would definitely recommended or buy again

November 18, 2018

These look to be PERFECT replacements for the drafty old Cessna vent tubes. Looking forward to a war cabin!

William H
March 19, 2018

Just installed this kit on my Cessna 150. Hardest part was access to where the holes needed to be drilled through the existing housing and into the inner sleeve. Then getting the small screw into the hole. Took about an hour total. Removed the thermometer from the old vent and installed in the new vent with no issues. Test flown and it works well. Moves air when open and nothing gets through when it is closed. The post in the back keeps it closed. No more drifting open.

Ed F
January 19, 2018

I just recently installed the Ventube as a replacement for my Cessna 170s old aluminum type vents. The Ventube consists of an outer tube that gets fixed against the metal air tube with a small stainless screw and a washer as well as an inner tube that fits quite tight in the outer tube. Installation was a breeze (one hour in a very cold hangar). The Ventube is really airtight if you close it completely. With a small velcro patch (included) you can create a little more friction between the two tubes which enables that the inner tube can be adjusted to any position and will stay there. A 100% must buy!

Thomas E
February 14, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the average amount of labor (time) that it takes a mechanic to install both of these Cessna ventubes?

Per the supplier: The average install time is about an hour to an hour and a half. Of course, this is a general estimate and each installation time can vary.

Q: What is the outside diameter of the plastic outer tube?

Approximately 1-7/8".

Q: Are there other colors available? Can it be painted?

No, these do not come in other colors. Yes these can be painted. Since they are plastic we would suggest the SEM plastic paint.

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