Firestone Coil-Rite Air Helper Springs - Rear Axle
Item # F4155
Our Price: $126.26
Confirmed to Fit
2020 Toyota Sienna
2 Wheel Drive Models
Will this fit?
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
- All Info
- Reviews (634)
- Q & A (0)
- Photos
2020 Toyota Sienna - Firestone Coil-Rite Air Helper Springs - Rear Axle
- Rear Axle Suspension Enhancement
- Air Springs
- Light Duty
- Firestone
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 Toyota Sienna, 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
Note: The construction material of the fittings may vary.
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.
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.
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.
W237604155 Firestone Coil Rite Air Bags - Suspension Kit - Rear Axle
4155
Installation Details
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Too difficult to install
Customer Reviews
Firestone Coil-Rite Air Helper Springs - Rear Axle - F4155
Average Customer Rating: 4.4 out of 5 stars (633 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.by: Richard03/17/2024
2021 ToyotaSienna
I have purchased 3 sets of Coil-Right. The product is very good but the installation instructions were terrible. The first set (2023) I installed per video instructions and it failed. The puck that is placed at the top of the bladder fell of and caused a catastrophic failure. The bladder was punctured and was basically destroyed. The second set (2023) I installed per the video but I enlarged the hole in the puck to help is stay on top of the bladder It failed also. The third set (2024) installed per the new installation instructions which removed the bump stop at the top of the tower. So far they seem to be working better but I think eventually the puck will diappere because there is nothing to hold it inside the spring. Time will tell. This is the only product for my vehicle I can use. 2021 Toyota Sienne LE.
by: DD05/15/2023
This system require drilling on even though this item says no drilling is required, the 2021 and newer Toyota Sienna FWD models require drilling. This is direcred in the toyota minivan specific instructions. You have to download the specific instructions for the Sienna that are linked in the description of the item.
by: Duc03/13/2024
I had these installed in the rear of my 2023 Toyota Sienna Limited after getting it lifted with the Journeys Off-road lift kit. Installation went smoothly with no issues. Initially, there were some squeeking, but that went away after a couple of months.
by: David 10/07/2022
2015 ToyotaSienna
Units was fairly easy to install. It was a complete kit and they work great !
I would recommend these air bags to anyone looking for such a product.
David
10/18/2023
They air lifts are working well.
Mike L.
11/9/2023
@David We're happy to hear that!
by: Alexander 09/02/2023
ToyotaSienna
I use my Toyota Sienna as my work van, so it's loaded with tools and supplies. It's heavy enough that the rear suspension sags, and the car rocks forward and back on rapid deceleration. I was almost ready to pay for a custom suspension before I found this product. I've been using it for a year and I can't say enough good things. It was reasonably easy to install, had to get some ramps and a creeper, but the rest of the installation was tool free. I measured the height of the front fender to the ground (highest point of the gender) and inflated the system until the rear fender was within 1/2"of that. For me it wound up getting 28 psi. Just short of the 30 psi max working pressure. The benefits were immediate. My acceleration improved, because the car didn't rock back as much when accelerating. Surprisingly, my breaking got better, which makes a little sense, since the car was only leaning forward, and not teetering back and forth. Best of all, the van was no longer leaning like a motorcycle every time I made a turn. The entire driving experience improved massively. It's been a year, and things are still going strong. Well worth the money.
by: John L.12/09/2013
2006 ToyotaSienna
I put these on two Toyota Siennas ('06 and '09). Installation was "easy" without any special tools to speak of. I didn't have to remove the bottom bolt of the shock. If you collapse the rubber and use the red plugs to hold them without air, they will fit between the spring coils with a little coaxing. So far very happy with both. Have had the vehicles loaded heavily multiple times and the difference in load capacity and handling while full is impressive. Ride can be a little stiff if you leave the air pressure at 35lbs without a load. I find around 25lbs is perfect for average use. Anyone with a Sienna knows that loaded down and the trailer hitch will drag in and out of parking lots etc. No longer with these on! Drilled through the bottom of the plastic bumper on one for the valves. The other one I attached an angle bracket to the plate where you would mount a larger trailer power plug.
Would absolutely recommend these to anyone with a Sienna.
JL in SC.
by: William 08/03/2023
ToyotaSienna
I had these installed on my Toyota Sienna one year ago and I couldn't be happier with the product. I frequently load the vehicle with heavy DJ and sound equipment and when inflated to about 35 psi, the air springs provide perfect support. No more squatting or handling like a boat going down the road. I highly recommend!
by: Bill 10/21/2021
Product works as advertised. Surprising held most of its pressure after a year without further inflation. Provides very good suspension assistance when trailer tongue hitched to minivan.
Bill
10/22/2022
Air bags are still performing as expected. The additional surprise is how well they hold their pressure with time. Thanks again for a very good product.
by: Karl 01/22/2022
All parts there to install, no buying necessary parts that are not included. Instructions and video will make installation straightforwRD
Karl
1/23/2023
Working great, keeps tail of car at correct height. Cut the air lines when installing as directed. Do not use sidecutters.
by: Cal P.03/09/2017
2015 ToyotaSienna
I'm very happy with my Firestone Coil-Rite kit for my '06 Sienna. I added a
"Tee" to join the bags together and routed the schrader valve to exit inside my fuel fill door. It was a little extra work, but well worth it as it's out of the weather and sight, and I don't have to scrabble around on the ground in the slop to check / adjust the pressure. I run 15 -17 lbs when I'm not hauling a load and that seems to help with body roll, and up to 25-28 psi fully loaded. The kit does the job it was intended for, and hasn't leaked a snif of air since I installed it a year ago. Three thumbs up!
Cal P.
3/11/2018
Two years out, and still happy as a clam. Just do it!
by: Don R.10/05/2016
2008 ToyotaSienna
I did not actually time the install but I believe it was less than an hour. I have been loading my 2008 Sienna very heavy when going on vacation. This last time my trailer hitch that I use to haul 5 bikes dragged leaving the driveway and was just a few inches off of the pavement when sitting on the level. I installed this system and tested the load with live body weight, I had a family visiting, they crawled into the van and it did not sag half as much as before. My next big trip is coming up in a week, so we will be giving it the full road test then. I recommend this product.
Don R.
10/11/2017
I just came back from another trip and it worked well.Once installed it is easy to inflate and deflate as needed.
by: Bruce B.01/31/2015
2011 ToyotaSienna
This Firestone #F4155 air-bag product is excellent. The fit to my 2011 Toyota Sienna was just as described. I installed the bracket and the two air-fill valves in the jack compartment, easy to get to and out of the weather. etrailer has been a pleasure to deal with.
Bruce B.
2/1/2016
Love the product. Had it installed by my favorite local Toyota dealer. Makes a nice difference towing our Park Liner Fiberglass Egg Camper. Would certainly recommend.
by: Bryan 10/03/2023
Work great
by: E07/07/2014
2008 ToyotaSienna
I installed Firestone Coil-Rite Air Helper Springs and they work great. With minimum air pressure they improved the unloaded ride and driveability. Loaded the van for vacation, added air pressure to bring the ride height back to the normal ride level and the van drove and handled better than when it was new.
Followed your on-line installation video and installation was a breeze.
The installation instructions with the kit were poor and incomplete.
.
by: Scott M09/15/2016
2011 ToyotaSienna
These were surprisingly easy to install using ramps and a floor jack and really helped with preventing our Sienna from bottoming-out when carrying heavy loads on the hitch mounted luggage carrier. Highly recommended. Be sure to watch the installation video on etailer!
by: Terri10/27/2018
Still holding pressure and does what I need. Van is more stable unloaded, even with new shock dampers it's better. With a full load of hundreds of pounds in back the van is much more stable and does not wallow like a whale near as much. Towing trailers is much better too. Didn't expect airbag pressure to hold for months and months but no leaks so far. Only issue was as expected...little bit of elbow grease to install bags and find best airline routing. some bag rubbing squeeks in the coils but I did expect some inherent to it's design. Nice product I would recommend to friends.
by: Tad 08/26/2022
Etrailer and Firestone have some great customer service. This kit was fairly simple to install
by: Marc05/29/2014
2006 ToyotaSienna
Installed on 06 Sienna. Bought these for towing our 16' boat. Had a mechanic buddy put the bags in and ran air lines myself. Had one initial leak but I recut the end of the air line and it works fine. Noticeable difference when inflated to 25 psi. Some slow pressure loss over 24 hrs but well within driving times needed. Overall excellent service from etrailers and a very good product so far.
by: Paul 05/14/2023
2010 ToyotaSienna
This is a really solid product. Installed one 10 years ago and never had one issue. Replaced vehicle and installed another. Directions could be better out of box. Fortunately the Sienna is fairly straightforward. Thanks!
by: CM05/27/2016
2011 ToyotaSienna
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.
by: Mark M07/06/2011
ToyotaSienna
This was my second order with Etrailer. AWESOME. Product went out same day it was received. Great service and pricing, with service being the most important to me. The air bag support system for my Toyota Sienna van's rear spring coils was easy to install with very minor modications. They made a huge difference on the back end of the van "hitting" the ground when loaded. Just what I needed to pull a trailer.
by: Tom11/02/2016
Very useful for heavy loaded road-trips (fully loaded mini van) or trailer attachments.
Easy to install and use. Definitely a recommendation!
Thank you e-trailer team!
by: Dan02/15/2022
Box was a little damaged but contents was unharmed. Things look good. Dealing with etrailer has always been a good experience
by: John08/23/2022
2021 ToyotaSienna
Didn't fit
David B.
9/20/2022
Did you try putting a little bit of dish soap on the bags and sliding them into position. Then you can just spray them off.
by: Robert 08/18/2022
Robert E.
8/19/2023
the valve that hold the air line is bad how can i purchase 2 new one. The line is leaking and i cannot air it up. please let me know. thank
25
634
Show More Reviews
See what our Experts say about this Firestone Vehicle Suspension
- Helper Springs For A 2018 Toyota SiennaThe Firestone Coil-Rite Air Helper Springs # F4155 comes with everything you need when installing helper springs on your 2018 Toyota Sienna. Using these helper springs will increase the stability to promote a smoother ride and prevent bottoming out on your Sienna. The springs are made out of a durable, elastic polyurethane which will provide comfort and stability. The load-leveling capacity for these helper springs is at least 500 pounds (at most 1,000 pounds). They have an adjustable...
view full answer... - Rear Suspension Enhancement Recommendation for 2018 Toyota SiennaFor your 2018 Toyota Sienna the suspension enhancement kit I recommend is the Firestone Coil Rite part # F4155 because Firestone is known to have higher quality air bags than the competition. This kit installs by slipping into the coil of your Sienna. Check out the picture I attached that shows it installed. I also attached an install video for this kit on a similar Sienna for you to check out too.
view full answer...
- Availability of Suspension Enhancement System For Front and Rear of 1996 Toyota Land CruiserThe Firestone Coil-Rite Air Helper Springs, part # F4124, would be the correct part number for the rear of your 1996 Toyota Land Cruiser if it is a four wheel drive model. They do not offer any system for the front of your vehicle. I would not recommend to try to use the rear springs on the front of your vehicle. I am including a link to the installation instructions on the Firestone rear springs. Firestone does offer lift spacers for vehicles that are lifted but they will not work with...
view full answer... - Rear Coil-Rite Helper Springs for a 2013 Toyota Sienna Do Not Require a Heat ShieldThe Coil-Rite helper springs # F4155 fit inside of the rear coil springs on your 2013 Toyota Sienna. The exhaust is not close enough to cause any problems. Also, the coil springs themselves would also help dissipate any heat. I have included a link to a video showing an example installation for you. Like you said, the Air Lift springs # AL60732 do come with a heat shield as a fail safe. I have linked a video of this kit as well. The Air Lift system is a good value so if the heat shield...
view full answer... - Cover Recommendation for 2020 Rockwood 2280BHESPFor the length of your 2020 Rockwood 2280BHESP the best storage cover for the climate you mentioned would be the Aquashed SFS part # 290-12295 that you referenced. This fits the best and will do the best in your winter climate. Then for air bag suspension support for your 2015 Toyota Sienna the Firestone kit part # F4155 would do an excellent job giving you additional support when towing.
view full answer... - Suspension Enhancement for 2021 Toyota SiennaYes, I recommend the Firestone Coil-Rite Air Helper Springs # F4155. I recommend these because of the additional support they add directly to the factory installed coil springs. When inflated they will help eliminate side-to-side movement, improving overall stability, and help remove squat.
view full answer... - Why Does Firestone Coil-Rite Air Helper Springs Come with 2 Air LinesWell you would not want either bag to leak! But you can use a T-fitting to run both lines to one line and fill the bags at the same time. However, if you want to be able to level the vehicle side to side, you would need two separate lines which is why they come with one for each air bag. For a T fitting you can use # F3273-1. I also recommend a tube cutter # AL10530 to get a nice straight cut on the air lines. A cut that is not straight is more likely to leak.
view full answer... - What do You Recommend for Hauling my Camper with my 2018 Toyota Sienna without Weight DistributionWe can get you set up. To start you're correct that the Curt Trailer Hitch Receiver part # C13343 is not designed to be used with weight distribution. We can still get the sway control, the brakes working and even help keep your Sienna level. For level the Firestone Coil-Rite Air Helper Springs part # F4155 for the rear is an easily adjustable way to acheive a similar result. As for the brakes you will start with a working 4-way like the T-One Vehicle Wiring Harness part # 118648 for...
view full answer... - Air Bag Suspension System Options and Rear View Camera for a 2017 Toyota Sienna I would be happy to answer those questions for you. The Air Lift 1000 Air Helper Springs for Coil Springs item # AL60732 provide 1,000 lbs of support. Anything over that maxes out the system and it won't work as well. It is recommended not to exceed this capacity. The Firestone Coil-Rite Air Helper Springs item # F4155 is a nearly identical kit with the exception of the valves. With cost and availability being practically identical I would choose the Firestone kit over the Air Lift because...
view full answer... - How to Choose the Correct Ball Mount for a 2005 Toyota SiennaIn order to choose the correct ball mount for your 2005 Toyota Sienna you would want to measure from the ground to the top of your hitch receiver tube opening and from the ground to the bottom of the coupler on your trailer while level. The difference between the two measurements will give you the correct amount of rise/drop you will need to look for in a ball mount. I have attached a help article that will walk you through this process as well. The most common ball mount used for this...
view full answer... - Valve Stem Location Recommendation for Firestone Coil-Rite Air Spring on a 2006 Toyota SiennaThe first priority for the valve stem location when installing Firestone Coil-Rite Air Helper Springs # F4155 is that the airlines will be routed in such a way that they would not come in to contact with any areas that might pinch or melt the lines. With that being said, I have seen a lot people install them into the rear bumper, out of the way of anything that might hit it, and not directly behind a wheel to prevent road grime from building up on it too much. You would do this by drilling...
view full answer... - Recommendations for 2011 Toyota Sienna and Motorcycle CarrierFor your 2011 Toyota Sienna, I recommend the Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 75237. Using this trailer hitch receiver, you can use the etrailer Motorcycle Carrier w/ Ramp for 2" Hitch - 76" Long - Steel - 500 lbs # e98873 which weighs 58 lbs. When you use this carrier, it would be wise to use a suspension enhancement to keep the back end from sagging. I recommend the Timbren Rear Suspension Enhancement System # TTORSEN04 for your application...
view full answer... - Self Tapping Screws for Install of Firestone Kit F4155 and 18140We used the self tapping screws part # FA1131822 for the install of the # 18140 with the # F4155.
view full answer... - Air Bag Suspension Kit Recommendation for 2021 Toyota Sienna AWDYes we do have an air bag suspension enhancement kit that fits your 2021 Toyota Sienna AWD with the Firestone part # F4155 that you referenced.
view full answer... - Air Bag Suspension Kit for 2021 Toyota Sienna AWDWe do have an air bag suspension enhancement kit that fits your 2021 Toyota Sienna AWD with the Firestone part # F4155 that you referenced.
view full answer... - Air Bag Helper Springs and Compressor System Recommended For a 2024 Toyota SiennaI do see that Firestone just added their Coil-Rite Air Helper Springs # F4155 as a confirmed fit for your 2024 Toyota Sienna LE. I would recommend installing the Air Lift WirelessAIR Compressor System # AL74000 with the air springs. This compressor has a smart manifold which will monitor the air pressure while you drive and make adjustments should the pressure change by more than 3psi. This will help protect the air springs from damage due to underinflation.
view full answer... - Suspension Enhancement Recommendation for 2020 Toyota SiennaWe have one air bag kit that fits the rear suspension of your 2020 Toyota Sienna with the Firestone Coil Rite kit part # F4155 which gives you the ability to add support to the rear suspension of your 2020 Toyota Sienna like you are needing. This will help with cargo in the rear of the vehicle as well as when towing.
view full answer... - Suspension Enhancement for 2017 Hyundai Santa Fe LimitedThe only suspension enhancement confirmed to fit your 2017 Hyundai Santa Fe Limited is the Coil SumoSprings Custom Helper Springs # CSS-1145R. These provide support to the coil springs on your vehicle. For air springs like the # F4155 you looked at, you may be able to use an Air Lift 1000 Universal Air Spring Kit like # AL60920. Finding the correct kit will require taking some measurements. First, unload your vehicle to make sure it's at normal ride height. Then, measure the inside height...
view full answer...
- Recommended Suspension Enhancement For 2022 Toyota SiennaI recommend the Firestone Coil Rite, # F4155 for your 2022 Toyota Sienna. Firestone is known to have higher quality air bags than the competition and this kit easily installs by slipping into the coil spring on your Sienna. This will allow you to inflate the air bags as needed to compensate for loads but have "normal" ride quality when not heavily loaded and have tongue weight from a trailer. Please note the linked product review and installation videos below.
view full answer... - Air Lift or Firestone Air Bags for a 2015 Toyota SiennaWhen comparing the Air Lift # AL60732 and Firestone # F4155 kits for your 2015 Toyota Sienna, it's true that we typically mention the Firestone bags have a better construction, but that's normally with their standard air bags. For the coil-type air springs the quality is essentially the same. For this application I actually like the Air Lift kit better so that's what I recommend going with. Since these kits have air bags and air lines involved both off them have the same amount of maintenance...
view full answer... - Do Firestone Coil Rite Bags Need Air Pressure When Not NeededWhen not needed you would want to keep 5 psi in the Firestone Coil Rite helper bags part # F4155 to prevent them losing their shape and damaging themselves. When needed you'd want to run whatever PSI works the best.
view full answer... - Will The Firestone Coil-Rite F4155 Fit A 2009 Chevy Uplander VanYes, the Firestone Coil-Rite # F4155 are indeed compatible with your 2009 Chevy Uplander. They will definitely help to improve your ride quality, especially if you are hauling a heavy load. They are very easy to install too. The kit includes two standard air valves that will be mounted on the rear bumper. I have linked an install video below if you want to take a look.
view full answer... - Recommended Air Springs for 2005 Toyota Sienna to Reduce Body RollThe Firestone Coil-Rite Air Helper Springs # F4155 will help reduce body roll and will improve both steering control and balance on a winding highway whether loaded or unloaded. It will level your headlight beams to give you a clear view of the road. This system also reduces tire wear and assists with braking. Improving the stability and stance of your minivan will help with many aspects of the ride of your vehicle. These springs fit inside your current coil springs to enhance your...
view full answer... - Trailer Hitch Recommendation for 2021 Toyota Sienna with Higher Tongue Weight CapacityFor your 2021 Toyota Sienna we have the Draw Tite hitch part # DT55MR as a confirmed fit that has a tongue weight capacity of 675 lbs. You might also be interested in rear suspension enhancement with the Firestone part # F4155 which will give you the ability to add additional support to the rear suspension to prevent sagging from the weight of the carrier and scooter.
view full answer...
Do you have a question about this Vehicle Suspension?
Info for this part was:
Updated by:
Leah B
Updated by:
Adele M
Updated by:
Mary K
Updated by:
Wilson B
Updated by:
Daron K
Updated by:
Alex H
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Chris R
Video Edited:
Jonathan Y
Video by:
Andrew K
Video by:
Ethan H
Written by:
Tyler C
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Expert Research:
Victoria B
Test Fit:
Nicholas E
Test Fit:
John A
Installed by:
Cole B
Installed by:
Robert C
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Product Experts Available Now!
Call 1-800-940-8924
Jenny N.
5/23/2023
I understand where you are coming from as at first I believed that we needed to update the site. However when we mean no drill in this application we mean that you do not need to drill bolt holes into the vehicles frame. All of the air springs kit will require a hole to be made for the air line nozzle.