1. Vehicle Suspension
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Firestone Coil-Rite Air Helper Springs - Rear Axle

Firestone Coil-Rite Air Helper Springs - Rear Axle

Item # F4164
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Firestone Light Duty Vehicle Suspension - F4164
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For safety and stability, air springs are the perfect partner for your rear suspension when you are hauling heavy loads. Springs fit inside existing coil springs to help level your vehicle, improve braking and handling, and reduce tire wear. Lowest Prices for the best vehicle suspension from Firestone. Firestone Coil-Rite Air Helper Springs - Rear Axle part number F4164 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Firestone Vehicle Suspension - F4164

  • Firestone
  • Air Springs
  • Rear Axle Suspension Enhancement
  • Light Duty

For safety and stability, air springs are the perfect partner for your rear suspension when you are hauling heavy loads. Springs fit inside existing coil springs to help level your vehicle, improve braking and handling, and reduce tire wear.


Features:

  • Provide extra support for your existing rear coil springs
    • Fit inside existing coil spring suspension on your vehicle
  • Keep your vehicle level when you are hauling a heavy load
    • Improve steering control and balance
    • Level your headlight beams
    • Reduce tire wear
  • Maintain even load distribution with air pressure, leveling off-center loads
    • Air bags adjust manually, side to side, with individual inflation valves
  • Enable more effective braking and handling
    • Work under heavy loading and adverse road conditions
  • Increase stability to promote a smoother ride and prevent bottoming out
  • Made of durable, elastic polyurethane for years of comfort and stability
  • Include all materials necessary for installation
    • Brackets, air springs, hardware, air line and separate valves for manual inflation
    • Switches and gauges, compressors, and air tanks (sold separately) are available for quick and easy air spring inflation/deflation from inside your vehicle
  • Made in the USA


Specs:

  • Load-leveling capacity: at least 500 lbs (at most 1,000 lbs)
    • Coil-Rite springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
  • Adjustable air pressure: 5 psi to 35 psi
  • Limited lifetime warranty on air springs
  • 2-Year limited warranty on hardware


Firestone Coil-Rite Air Spring Basics

Firestone Coil-Rite springs fit inside your existing rear coil springs to maximize the effectiveness of your suspension system. The added cushion provided by the air springs allows your vehicle to better handle a heavy load or trailer. Hauling heavy loads or towing a heavy trailer can make the rear of your vehicle sag and the front end rise. This puts more strain on your rear axle and reduces contact between your front tires and the road, causing problems with braking, steering control and traction. By adding air springs to your rear suspension, you can help to level your vehicle for more effective braking and handling under heavy loading or when you encounter adverse road conditions. The air springs also help to level your headlight beams and reduce wear on your tires.


Firestone Coil-Rite airline installation

Adjustable Air Pressure

The air pressure in your Coil-Rite springs can be adjusted manually, side to side, to compensate for off-center loads. A centered load improves the stability of your vehicle by reducing body roll. The air springs will also help to absorb road shock and soften contact between your axle and frame. This prevents bottoming out, thus improving ride comfort. Route the air line tubing for the springs to your vehicle's bumper to provide easy access to the manual inflation valves.


Firestone Coil-Rite air spring components

Air Spring Construction

Coil-Rite springs are constructed of durable, elastic polyurethane to ensure years of service. Single replacement springs (sold separately) are available for maintenance to an existing Coil-Rite kit.


Air Spring Installation

The Coil-Rite springs install inside your existing coil springs. The custom-fit springs attach to your vehicle's spring seats.



W237604164 Firestone Coil Rite Air Bags - Rear Axle

Installation Details F4164 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Firestone Coil-Rite Air Helper Springs - Rear Axle - F4164

Average Customer Rating:  4.4 out of 5 stars   (231 Customer Reviews)

For safety and stability, air springs are the perfect partner for your rear suspension when you are hauling heavy loads. Springs fit inside existing coil springs to help level your vehicle, improve braking and handling, and reduce tire wear.

- F4164
by:
2011 Toyota Sequoia

Easy install on 2011 Sequoia. Jack up and support right side of vehicle, remove wheel. Deflate and plug bag then stuff into the middle coil of spring. Use soapy water if bag hangs on spring coils, I used sweat. Make sure you run the air line through the top of the spring mount before unplugging the bag. As soon as you remove the plug, attach air line to bag. It's much more difficult to plug in the air line after bag is inflated. Run air line to left side and repeat , about a 1 hour job. Firestone really should include a T fitting to run the bags together. At 10psi Sequoia sits about 1/2" taller in the rear, I'll probably run them about 8psi unloaded. Will have to see how they perform and hold up under load, so far I'm impressed. 419436



- F4164
by:
2011 Toyota Sequoia

Great product, with moderate install. I had to drill out the lower pan of the coil spring in order for the hose not to be pinched. Other than that, it went smooth and has been working great for almost a year. I would highly recommend this product. 339214


Comments
Fantastic product. Theyre on my 2011 Toyota Sequoia and still works like a charm. By increasing the suspension on my rear wheels, my stability has improved, trailer sway has been eliminated and my rear tires dont wear out on the insides. I just wish I bought these air bags years ago. Since installing 2 years ago, I have travelled approximately 5,000 km while towing with no issue. While towing I fill to 30 psi, and when not towing, I keep them just under 10 psi.
Derek G - 02/06/2018

34309

- F4164
by:

The instruction are not for independent rear suspension. They are for a straight axle. All you have to do is disconnect the sway bar links and remove the shocks and you can slide the bags into the coils. It’s not easy though. They do make a big difference in towing. I cut a piece of aluminum angle to make a bracket for the valves, and that makes it easy to access for pressure adjustments. 718568



- F4164
by:
2003 Chevrolet Silverado

Great product, I have it on my 2003 Silverado to level the truck out while towing my 5th wheel. I only gave 4 stars because I think it should come with a "T" fitting so both bags could be filled at the same time with an equal amount of air. 449007



- F4164
by:
2012 Toyota Sequoia

They followed up very well 397702



- F4124
by:

Review from a similar Coil-Rite in Vehicle Suspension


These air helper springs did exactly what we needed. We tow a Jayco Hummingbird trailer (3,750 lbs, 450-500 lb tongue weight) with our 2000 Toyota Landcruiser. Even with a weight distributing hitch the rear end squatted a bit more than I wanted. With the air helper springs installed rear end squat has been completely eliminated. Driving without the trailer feels more firm and connected to the road. The only negative is about the complexity of the installation. On the 2000 Landcruiser it requires that the rear suspension be partially disassembled. That was far more than I could handle at home. It took our neighborhood auto shop 3 hours to complete the job. Money well spent. 638942


Comments
It took some work by the shop, but it’s finally working as designed. The touting of the air hose from inside the coil spring is through an existing hole in the frame was binding and causing the driver side hose to become kinked. The shop had to enlarge the hole and one that was done there have been no more problems.
jmcdermo - 05/07/2020

75902

- F4170
by:

Review from a similar Coil-Rite in Vehicle Suspension


Product is what you see on the web page and the videos exclent its idiot prove 411973



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


I've installed the air springs and and they hold up great. I'm pulling a tall 5 x 10 enclosed trailer and no more sagging in the rear end. Air up the bags to 35 max PSI and the ride quality is excellent. 715974



- F4105
by:

Review from a similar Coil-Rite in Vehicle Suspension


Did not work at all on my 11altima. No change to the suspension and the bags deformed beyond recognition after 2 weeks 260702



- F4174
by:

Review from a similar Coil-Rite in Vehicle Suspension


Working out very well 735132



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


I got the a draw tite hitch, wiring harness and Firestone coil helpers for my 2016 Nissan pathfinder. Everything fit great and was easy to install. The price was awesome and shipping was super fast. An easy A+ for etrailer.com. 343985



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


We ordered a suspension kit it came right away and at a great price. We had checked out several shops in town who said they were hard to get for our new vehicle and the cost was out of this world. Great job guys 165779



- F4176
by:

Review from a similar Coil-Rite in Vehicle Suspension


Used the Air Helper Springs on a VW Jetta to help when we put the 4 bike rack on it. Worked perfectly, kept us level when loaded and letting the air out gave us the ride when empty. Bike pump easily pumped them up when needed. I would recommend this product for anyone needing to control ride height under load or when towing to stiffen the suspension. We have had them installed for over a year. Way to go eTrailer! 240426


Comments
Continues to work well. Would recommend without reservation
Tim F - 03/09/2017

22663

- F4175
by:

Review from a similar Coil-Rite in Vehicle Suspension


Product installed without any issues. Do suggest taking a paper towel or rag and spraying a small amount of WD40 on it and wiping around spring coils only not on air bag. Bags slide in a little easier. Would have been 5 Star except for unacceptable shipping time, 5 days to on instate location 200 miles away. 579207



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


Good product. takes some effort getting the bag inside the coils. As far as removing the frame bumper - didn't do it - it is pressed in between the frame and top of coil spring. So far so good 514375



- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


Easy installation fixed my problem of low ride height. The only thing I would change is I wish there was a 90° angle for the bottom so it doesn't stick so far out I know it's going to end up catching things on the road 595108



- F4174
by:

Review from a similar Coil-Rite in Vehicle Suspension


As a former mechanic, this was a tough install. It was a struggle to get the air bags through the springs and there was not enough room to remove the 3" piece of tubing so I installed the bag with the full length of tubing already in place. I was hoping to gain about a 2" lift, but it only raises the vehicle about 3/4 of an inch. The bags do make a noticeable difference in handling and the hitch is not so close to the ground while hauling a trailer. 103341



- F4124
by:

Review from a similar Coil-Rite in Vehicle Suspension


Review is for very helpful service- got into a time squeeze, made a call on Sunday, and received the correct part on Tuesday AM. No review on product yet, but it looks like it should work well. The go into the rear coils of a Toyota Sequioa and are currently being installed. 662780



- F4179
by:

Review from a similar Coil-Rite in Vehicle Suspension


I installed these on my 2006 Honda Odyssey to pull an 18ft (total length) popup camper. My van used to bounce pretty good through intersections and would occassionally bottom out on the big bumps. After putting these in, it rides nice and level, and hardly bounces at all, improving the ride for passengers and popup alike. One note, I had them installed at a local shop and he ran the airline so each stem comes out just in front of the rear wheels (through the bottom body panel) to avoid the exhause. 12359



- F4155
by:

Review from a similar Coil-Rite in Vehicle Suspension


Excellent product, installed on 2011 Toyota Sienna that tows 3,000# Hybrid Travel Trailer. Works great to keep rear level (along with Anderson Hitch Weight Distribution). We now run air in them without the trailer as well to help prevent typical Sienna sag when loaded with people or loads. 252191



- F4185
by:

Review from a similar Coil-Rite in Vehicle Suspension


Great for a small trailer/camper. 87037


Comments
How big of a trailer are you towing with your Ram and did this kit help?
-- comment by: Jason W - 01/13/2014

2564
Comments
The kit was okay for one trip. The lines keep coming off then I lose air. I have had to fix the lines four times now I gave up, dont know if there is a real fix to this.My trailer is 18 feet.Any help would be appreciated.Thank you.
-- comment by: charles - 01/23/2014

2626

The lines need to be cut very cleanly and perfectly square. If there a little crooked or rough, the fittings cannot seal to the line. If you are using a knife or box-cutter or side-cutters to cut the line, your fix may simply be a proper line cutting tool like parts F9009 or AL10530. Make sure when you push the line into the fitting, that you push it all the way in until it bottoms out.

-- Patrick B - 2/4/2014


- F4176
by:

Review from a similar Coil-Rite in Vehicle Suspension


Etrailer was fanatic there communication is great and follow thru Install was a bit harder then other reviews say it is as far as getting the air bags inside the coil springs .I ended up taking the coil springs off the car for install not hard just time .after air bag install the rest was a peace of cake .With 35 psi in the air bags car was a lot firmer rode better and handle better then stock .Still the vw sport wagon is weak for towing tong weight .But the air bags are a must have if you tow anything or even carrie a bike rack 105672


Comments
Still working Great i just check the air pressure every now and then and i keep towing a three rail dirt bike trailer with three bikes on it very happy with air bags
Daniel B - 10/30/2014

7499

- F4118
by:

Review from a similar Coil-Rite in Vehicle Suspension


Installation on 2014 Pathfinder didn't require Shock removal. It went in fairly easily. They are helpful although wonder if they shouldn't be slightly taller . With 5 passengers and trailer approx. 3500 lbs. still sags some. In my opinion Japanese cars all have Weak rear suspensions 139152


Comments
How did you install with the stop built into the top spring seat? Also did you run the air hose out the bottom? Thanks
-- comment by: Will - 08/13/2014

6226
Comments
To Will , To be honest, I didnt even look at the upper inside of the spring for a stop . I simply collapse the bags and worked them into the spring . Yes I have the air fitting and hose coming out of the bottom . I used extra cable ties to secure the hoses. I drilled NO holes in anything. I was carefully of routing the lines away from the heat of the exhaust. I mounted the Air fittings to the holes in the receiver. One complaint is that I have great difficulty in filling the them. I dont know if it is the Tire chuck I am using or the Fittings provided. I actually end up unscrewing the nut on the fitting and take the fitting and hose free from the receiver to press the tire chuck on far enough to fill them then remount the fittings to the receiver
-- comment by: Larry M - 09/30/2014

7059

Thanks for responding Larry. In the installation instructions Firestone recommends removing the factory jounce stop, or spring seat before installing the Air helper springs.

-- Rachael H - 10/1/2014


- F4174
by:

Review from a similar Coil-Rite in Vehicle Suspension


The product is not exactly as pictured. The bottom protectors are disks (round) rather than rectangular. But that doesn't affect their installation or performance. Installation was a bit of a challenge. I'm not a gear head, so I was lying under my 2008 Rav4 trying to jam the bags into the springs. I started on the driver side. It went fairly well. The passenger side was a different story. The exhaust system was in the way -- good thing it was coolish. I did manage to get both bags in with all my knuckles still intact. The instructions indicate that you cut a short piece of hose, insert it into the bag, deflate the bag, and insert the plug in the end of the short tubing. That's fine... but then when you get the bag in, it says to remove the short tubing. Ummmm.... how!?!?! I did manage to get the tube out of both sides. I'm not sure, but I think I may have buggered up the quick connector in doing so. The second to last step is to run the tubing to the back of the vehicle. I'm not too sure I've done a great job running the tube. Since the tube sticks out the bottom of the spring and arm, it seems there is no way to get the tube so that it's not dangling down from the car. On the passenger side, the exhaust system is very close to everything. It was hard to find a place to run the tube that wouldn't be too close to the exhaust pipe. Then you need to check for leaks. My unit's max pressure is 35psi. I inflated it to that, and quickly heard hissing from one side. I removed the quick connect inflator and reinstalled. Still with the hissing. So far, I haven't been able to stop the air leak. But... they stay inflated at 25psi. For now, that's okay for my application. Then you're supposed to drill 2 holes in your car. I don't think so.... I left enough tube that I can decide later where to install the inflators. For now, they're zip-tied to the hitch bar. I plan to get a piece of metal that will attach to the hitch's mounting plate, and drill through that instead. I haven't been able to tell if they perform as advertised. I just finished installing them earlier this evening. I took it out for a test drive (just to make sure I didn't mess up anything). Inflated at 25psi it seems to drive fine. I can't tell if the back end is firmer.... or if I'm just sensitive because I'm aware of the bags being in. It does appear that the back end rides higher (even when it's empty). I'm loading up in the morning and heading out. I'll update my review with performance observations when I get back. 94306


Comments
Use a concentrated soapy water solution in a spray bottle and start check the areas where the hiss is coming from. If you have an audible hissing sound, it will not hold pressure for long and you do not want the coil springs to be moving on a flat bag.
-- Patrick B - 08/10/2013

1877
Comments
Thanks for the awesome customer support.Making a fresh cut on the inflator end helped. The hissing has stopped, and no more leaks have been detected.I just got back from the maiden road trip 350 miles round trip. Its certainly not a long road trip, but it was enough to notice the dramatic improvement.Normally, when I attach my travel trailer 3500 GVW my Rav4 with tow prep option sags in the back. My trailer has the weight distribution kit that helps level it out. But, it only helps with the trailer weight. When I carry SCUBA equipment in the back of the Rav4, it still sags, and the weight distribution kit doesnt help with that.But... With the F4174 Coil-Rite air springs, there is very little sag. In fact, I was able to attach the trailer without much sag at all before I attached the weight distribution bars. With the SCUBA gear in back, the Rav4 stayed level no visible sag.In fact... the hole towing experience was dramatically improved. The ride was a lot smoother. There was a lot less galloping. I hardly felt the bumps on the road.Im surprised that Toyota doesnt offer this as an option. That such a simple and inexpensive alteration could make such a dramatic improvement is really surprising.I would like to change my rating to 5 stars.
-- comment by: Bob K - 08/12/2013

1888

We are glad to be of help. Remember to check the tongue weight rating of the RAV 4 in the owners manual. The tongue weight of the trailer and any cargo in the RAV 4 behind the rear axle will count towards that capacity. The air springs working with the weight distribution should make for a much better ride and your RAV 4s suspension will certainly thank you for it.

-- Patrick B - 8/14/2013

Comments
The good news is... These are awesome and should be available as an option from the factory. With the back end loaded and the trailer connected, the rear of the Rav is still off the ground. It also improved handling as the front end stays on the ground.It turns out that I hadnt buggered the quick release. I had just cut the hose at an angle. You need to make sure you cut the hose square. After cutting the hose square, the bags stay inflated without hissing.The Bad news is... if you have work done around the exhaust system requiring a cutting torch, you need to be careful and have some sort of shield to protect the bag and hoses. I discovered this the hard way. A small piece of molten metal cut through the bag like butter.But, for some reason, putting the 3rd bag was easier than either other the first two.I wound up attaching a small piece of angle iron to the hitch bar. This worked very well and avoids cutting the hole in the car.Having the tubes dangle from the bottom of the car hasnt been a problem. I was able to tighten them up a bit and route them better once the angle iron was installed.This has made a big difference
Bob K - 02/09/2015

9396

- F4108
by:

Review from a similar Coil-Rite in Vehicle Suspension


I installed these on my 2014 Cadillac Escalade ESV. I pull a 29’ enclosed snowmobile trailer with a 7,000# rating. These help tremendously with sag and sway and make life safer and easier when trailering, particularly when dealing with a crosswind. Installation is a little bit of a knuckle-buster but can be done easily at home. 570838


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Ask the Experts about this Firestone Vehicle Suspension

  • Air Helper Springs for 2008 Toyota Sequoia Limited
    I checked with Air Lift and their Air Lift 1000 # AL60786 are only confirmed to fit the SR5 model of the 2008 Toyota Sequoia. The Firestone Coil-Rite Air Helper Springs # F4164 will fit all models of the '08 Sequoia and will work for you. These springs fit inside your Sequoia's coil spring suspension and allows you to adjust the air pressure between 5 psi and 35 psi. Addtionally, the Firestone Union Tee # F3025-1 is available for the 1/4" hoses.
    view full answer...
  • Replacement Air Line Kit for Firestone Coil-Rite Air Helper Springs F4164
    Thank you for purchasing Firestone rear air bag kit # F4164 for your 2015 Toyota Sequoia that has coil springs. To replace the damaged air line you can use kit # FWR17600048 which is 18-feet of air line hose that is already equipped with the 1/4-inch threaded brass fittings. It can be tough to remove the air line from the fittings since their friction fit is intended to help prevent accidental disconnection.
    view full answer...
  • Can Coil-Rite Air Spring Be Mounted With Air Line At The Top On 2010 Toyota Sequoia
    I took a look at the installation instructions for the Firestone Coil-Rite Air Springs part # F4164 for your 2010 Toyota Sequoia. It does show that the air line should be at the bottom of the air spring when installed. I spoke with another Expert about the instructions and they told me that they called Firestone and was told that if you are able to install the Coil-Rite with the air line at the top it would not make a difference in the performance. If you have a kink in the line...
    view full answer...
  • Are Firestone Coil-Rite Air Bags the Same Dimensions as Air Lift Springs for 2008 Toyota Sequoia
    Yes the Firestone Coil-Rite springs, # F4164, have nearly the same dimensions as the Air lift springs, # AL60786. This is because they install the same way and same place and are custom fit products for the 2008 Toyota Sequoia. If you are debating on which system to get, Firestone is the way to go. Firestone is a leader in the industry and they make a good, quality product. The Firestone bars are 5-1/2 x 10 inches and the Air Lift bags are 5-3/8 x 9-1/2 inches.
    view full answer...
  • Rear Air Bag Suspension Enhancement Recommendation for 2016 Toyota Land Cruiser
    For air bag style of suspension enhancement that fits your 2016 Toyota Land Cruiser the Firestone Coil Rite kit part # F4164 is a confirmed fit and will work well. This fits into the coils on the rear suspension which will then give you the additional support you need.
    view full answer...
  • How To Help Prevent Rear End Sag While Towing with a 2016 Toyota Land Cruiser
    I have two option to help decrease rear end sag on your 2016 Toyota Land Cruiser while towing, the Timbren Rear Suspension Enhancement System part # TTORLC2 or the Firestone Coil-Rite Air Helper Springs part # F4164. The Timbrens are a one time only install whereas the Firestones require adjustments. That said, these adjustments also mean you can really fine tune your setup for the perfect amount of support/comfort. If you will be towing multiple times a week then you most likely won't...
    view full answer...
  • Suspension Enhancement Recommendation for 2008 Toyota Sequoia Towing Trailer
    The Timbren kit part # TTORSEQ1 that you referenced is the correct fit for your 2008 Toyota Sequoia and would give you additional suspension support when towing. That said I wouldn't necessarily recommend this kit unless you were planning to be towing most of the time as it would make the ride quality a bit harsher when not towing. The better option if you are concerned about ride quality is the part # F4164 which allows you to use varying air pressure in the bag so that you can tailor...
    view full answer...




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Info for this part was:

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