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  3. Air Suspension Compressor Kit
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  6. Union Tee
Firestone Union Tee for 1/4" Tubing

Firestone Union Tee for 1/4" Tubing

Item # F3025-1
Our Price: $17.19
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Shipping Weight: 0.07 lbs
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Adapter includes three push-to-connect fittings for use with Firestone 1/4" air lines. Adapter splits one incoming air line into two outgoing lines or it routes two incoming air lines into one outgoing line. 1-800-940-8924 to order Firestone accessories and parts part number F3025-1 or order online at Free expert support on all Firestone products. Great prices and Fastest Shipping for Firestone Union Tee for 1/4" Tubing. Accessories and Parts reviews from real customers.
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  • Reviews (201)
  • Q & A (0)
  • Videos (2)
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  • Why etrailer?

Firestone Accessories and Parts - F3025-1

  • Air Suspension Compressor Kit
  • Vehicle Suspension
  • Connectors
  • Union Tee
  • Firestone
  • 1/4 Inch Tubing

Adapter includes three push-to-connect fittings for use with Firestone 1/4" air lines. Adapter splits one incoming air line into two outgoing lines or it routes two incoming air lines into one outgoing line.


  • Splits 1 incoming line into 2 outgoing lines
  • Routes 2 incoming lines into 1 outgoing line
  • Provides fast and easy air line connection


  • Quantity: 1 tee
  • Application: Firestone 1/4" push-to-connect air lines
  • 2-Year limited warranty

WR17603025 Firestone Union Tee for 1/4" Tubing

Video of Firestone Union Tee for 1/4" Tubing

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Firestone Vehicle Suspension F3025-1 Review

Today, we're going to take a look at the Firestone union tee for quarter-inch air line tubing. This union tee has three push-to-connect fittings for quarter-inch air line tubing. This connector will split one incoming air line into two outgoing lines, or it will route two incoming air lines into one outgoing line. inaudible 00:00:18 quantity of one union tee. That should do it for the review on the Firestone union tee for quarter-inch air line tubing.

Customer Satisfaction Score:

Customer Reviews

Firestone Union Tee for 1/4" Tubing - F3025-1

Average Customer Rating:  4.9 out of 5 stars   (201 Customer Reviews)

Adapter includes three push-to-connect fittings for use with Firestone 1/4" air lines. Adapter splits one incoming air line into two outgoing lines or it routes two incoming air lines into one outgoing line.


The new slip in and lock air line technology is pretty slick stuff!! With me looking for a level load, joining my dual lines (bags) into one was best. This t-fitting works spot on. A must and should be included in the kits.


Good quality adapter. After a year in use it seems to hold up pretty well.


I needed this for my air bag system and it works perfectly. Thanks etrailer for the speedy service.


Nice product, prompt shipping, works perfect on my new 2021 Silverado HD that has a wider box than the previous generation.

All good, no issues.
Rob - 01/03/2022


I used this to tie 2 lines into 1 so I have 1 valve to control to air pressure on both evenly. Worked great!


Used this T to equalize my air bags and eliminate one valve stem.


Works great I like it because I think it keeps the air pressure equal on both airbags installed easy no leaks .


The "T" is a nice addition to the Firestone Airbags you installed. Both the airbags and the T make a much more stable ride when towing my camper. It is always a pleasure doing business with etrailer.

Works great
Meade F - 07/23/2020


Excellent product easy to install and sure make inflation of the rear air bags easy and consistent pressure for both bags.


Good product as usual from eTrailer


These worked perfectly when I needed a connector to tap into the lines for my Firestone airbag for the onboard Airlift wireless air compressor system I purchased from etrailer. These two items make it easy to control the pressure in my airbags not only while not moving but I can adjust the air pressure in my Firestone Air bags while driving as well. As an added bonus the T connection can be easily removed if needed.


It worked great


I purchased the Firestone rear spring air bag kit for my 2012Ford Flex to give it a bit of extra load bearing when towing my trailer. (Part # F4177). I wanted to combine the air feed tubing into a single fitting so that I could adjust both sides at once. This fitting worked great as did the Coil-Rite air springs. Under towing load it raised the height at the hitch receiver about 1 inch. That was just what I was hoping would happen. Thanks for your help.


The T fitting is needed to go to the single point system. This is a very nice plug and play system.

I am very happy with this system and have not had any leaks.
Richard - 05/17/2021


A must have product when installing air bags. Equalizes air pressure in both air bags at all times.


Product was fairly easy to install. The instructions were a bit general. On line blogs and a video by Firestone were a great help.

This is the third set of air helper springs that I have installed on a vehicle. I am impressed by the quality of the components when compared to the other brand that I previously used.

The help I received when making the order was exceptional. The sales person, Renee, followed up several times via email to insure the order was correct, in transit, and delivered. Finally she wanted to know if the product met my expectations. This is almost unheard of in today's world. As a result today I recommended etrailer to one of my kids (weight distributing hitch) and a friend (air suspension).


The Firestone airbags were very easy to install. The only place that I scratched my head was for the torque values for the various hardware. I eventually located it at the end of the instructions. It is common in the better auto repair manuals to list the torque ratings in the drawings. Just an idea.
Since I'm somewhat OCD when it comes to mechanical work, I always have a torque wrench in hand for the final tightening.
Your instructional videos are a real time saver. Well Done!!!
The air tubing cutter worked as advertised. Nice, clean and even cuts every time.


The product was exactly what I was looking for and needed for my Rite right system. The star rating represents the service, or lack of, when I initially apptempted to order it from etrailer. Let me explain, I called the etrailer order line and explained to the representative that I had just placed an order online for a very expensive firestone wireless air compressor kit and I wanted to get the proper union tree for the kit. After reviewing my online order, the representative indicated that they were unaware of which union tree that would be needed, but that they would contact firestone and put a note on my order for follow up. Never happened. After doing my own research I was able to identify the part and part number. I ordered the part from the etrailer site because it was competivitly priced. Again, the product is as advertised, but the rating represents my ordering experience for the same part.
- Marco V


Got the t-fitting to go with the Firestone airbag kit I got for my 2020 Chevy 2500 HD Z-71 Silverado. Having to manually equal out two separate airbags is a little difficult and that is why I elected to run the t-fitting do I am only filling the two bags from one inflation point.


Installed this product as part of the Firestone Ride-Rite air bag system. For me, I did not see the need for different air pressures on each side. Thus, I went with the union T so that I would only have one air valve on the outside of the vehicle. This was installed about a year ago and is still working well.


this union worked perfectly for rerouting the air lines for they air bags on my made the job a lot easier and there were no leaks.


Bought this coupler along with a Firestone air coil rite system. Installed on a 2008 Rav4. Easy installation with the added help of the etrailer diy video. Both products work great and are still going strong 1 year later. No leaks! Would buy again if needed.


I chose not to have an on board air compressor, opting instead for using a portable compressor to air my Firestone airbags. This T fitting makes that really easy. One place to air up, and automatic balancing of the air pressure between bags as temps change, etc.


I had some issues with this T leaking when I first installed it but it seems to be doing well now.


A must have if you are installing an air helper system. Regulating the air pressure at one point is the only way to go. Use this on my installation and now both bags have equal air pressure. No guessing on each side. A Must Have!!!

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Employee Leah B
Updated by:
Leah B
Employee Mary E
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Mary E
Employee Alex H
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Alex H
Employee Mike L
Expert Research:
Mike L
Employee Michael H
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Michael H
Employee Jameson C
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Employee Tyler C
Written by:
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Employee Jeff D
Installed by:
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Employee Joshua S
Video Edited:
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Employee Nicholas E
Test Fit:
Nicholas E
Employee Shane T
Test Fit:
Shane T

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