Firestone Coil-Rite Air Helper Springs - Rear Axle
(628 reviews)
Price: $144.12
Firestone Coil-Rite Air Helper Springs - Rear Axle
Retail:$234.79
Our Price: $144.12
You Save: $90.67
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Firestone Vehicle Suspension
- Air Springs
- Rear Axle Suspension Enhancement
- 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 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
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.
W237604136 Firestone Coil Rite Air Bags - Suspension Kit - Rear Axle
4136
Item # F4136
Installation Details
This Product Fits The Following Vehicles
- 2007 - 2012 Hyundai Accent
- 2002 - 2004 Isuzu Axiom
- 1998 - 2002 Honda Passport
- 2010 - 2017 Toyota Prius
- 2012 - 2017 Toyota Prius c
- 2012 - 2015 Toyota Prius Plug-In Hybrid
- 2012 - 2017 Toyota Prius v
- 1998 - 2004 Isuzu Rodeo
- 2001 - 2003 Isuzu Rodeo Sport
- 2004 - 2006 Scion xA
- 2008 - 2015 Scion xB
- 2006 - 2016 Toyota Yaris
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Too difficult to install
Customer Reviews
Firestone Coil-Rite Air Helper Springs - Rear Axle - F4136
Average Customer Rating: 4.4 out of 5 stars (626 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: Josh03/23/2024
These things are awesome. Install was a bit tricky with actually getting them inside the spring. Defintely don’t attempt during the colder season as the material is NOT pliable. A bit of soapy water helps if the springs uncompressed still aren’t wide enough to easily work them in. They’ve held up great and provide a decent ride when the vehicle is loaded down. Minimal squat!
by: Azaan08/13/2022
2012 Toyota Prius Plug-In Hybrid
Ordered From QC,Canada. Delivery took 13 days. Installed on my driveway in my Toyota Prius 2012. It's a 2-person job, took 1.5 hr total. Not hard to do
by: Michael06/29/2019
Order these for a 2013 Toyota Prius C. Website here didn't list this part worked for my vehicle. I cross referenced through other websites to find which model was going to work for my Prius C and came across the Toyota Yaris has the same size rear spring as my Prius C, so I put two and two together and placed the order. Product arrived and installation was a breeze ( that's if you knew before hand what is expected) I researched by viewing video after video of different ways to install these bags. As long you can raise the car high enough off the ground and secure vehicle with jack stands. You won't have any trouble sliding these air bags between the springs. I've read reviews where they stated they had a tough time pushing bags between springs. The only thing I can think of is they did not raise vehicle high to allow the rear suspension to extend or they removed the tires during installation. My advice-keep the wheels on, the added weight of the wheels help extend the springs to more to give that extra gap to slide air bag in between spring.
So if you own a 2013 Toyota Prius C, these air bags will work for you. Now I can transport two adults in the rear seats and not have to worry about tires hitting the rear fenders when driving over bumpy roads
by: William04/22/2021
Like all my etrailer purchases
Great value great provider with fast economical shipping.
Bag system was great upgrade to my Prius V which great performance and cargo area but Not a suspension for weight on a hitch receiver nor heavier cargo behind rear wheels. Perfect solution! Takes some skill to install but not inordinate. Thanx
by: Walter02/28/2014
2010 Toyota Prius
installation instructions could be better
When you deflate to work into spring, once you get one end in you should release the deflater stopper, makes it easier to work into place.
Also, if you work it in from the top, once you get it mostly in, rotate it around like you are screwing it in place, this is my 3rd set to install, struggled on the 1st set, easy to do now.
Just a few suggestions
by: Gerald 05/09/2021
2010 Toyota Prius
Been great on my 2010 Toyota Prius. Have had them now for about 1 year. I haul many things in the back of this car and these air bags are up to the task. No more low squatting car!
by: Jorge06/05/2022
2012 Hyundai Santa Fe
by: Clay 09/20/2022
2007 Hyundai Accent
Good product and easy to install if you are a little handy with tools.
by: JM07/07/2014
2010 Toyota Prius
Installation of the first air bag took me about 25 minutes, and the second one about 5 minutes. I heated the second air bag with a heat lamp to make it more flexible. I think my 2010 Prius drives better with them installed.
by: Alan 09/20/2022
Quick, prompt service.
These work well. Have used them on numerous vehicles. Not always easy to get in place.
by: Chris 04/17/2021
Toyota Prius
Love that I can load up the Prius and I get no sag
by: Len 09/03/2020
I was amazed seller shipped same day--as i ordered in evening! Product seems to be complete and well made, installing now.
by: Vince B.10/06/2011
Installation was not that hard and it makes a big diffenence in the ride of my vehicle. I have a 10 year old car and the springs were not performing well even though I changed the shocks. These bags are the greatest, especially for the cost.
by: Becky H10/11/2017
Another great transaction you guys rock
by: Roslyn09/21/2022
by: Daniel 05/08/2021
by: Andrey 04/05/2021
by: Jose 09/12/2022
by: David03/25/2023
After installation we are towing on the level and enjoying the ride. In an effort to maintain the minimum air pressure to each Coil-Rite Helper at all times, we installed individual air supplies to each Helper. We used our onboard Horn-Blaster air compressor to supply two air pressure regulators allowing us to easily change air pressure to each individual helper as desired. Each regulator employs a check-valve to maintain pressure to the Helpers in case of a compressor failure. We have marked each pressure gauge to the minimum pressure and another mark for our desired towing pressure.
by: Xong02/28/2024
The Firestone airbags are very well made and has quality feel. It was not very warm in MN when I installed them so I needed to use lubrication and a heat gun to warm the airbags from a distance so the airbags would be pliable. My gladiator has a Decked drawer system and rear steel bumper installed which caused the rear to squat more than the front. After installing these airbags and learning that I was fluent in “FRENCH” the rear of the truck was raised and squatting issues addressed. The drive was improved as well, less body roll around curves.
by: Brad S.03/19/2024
As most have indicated fitting the bags in the springs is the hardest part. one tip I found helpful was once the bag was partially in, force the bottom of the bag with the air tube into the center of the spring then slowly let the air go back into the bag. Once it had some air in it i was able to move it around and get into place. once installed at 20 psi it raised my back end two inched. from 35" to 37" It is now level with the front of the vehicle. my vehicle is a 2015 armada platinum. Yes it has the auto leveling system. But the system wasn't functional. I've used these before in a 2010 armada platinum and it worked out great
by: Richard03/17/2024
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: Jason10/21/2022
I can only give this 3 stars because one of the bags only holds air for about 1-2 days. The other bag stays filled for months. When they are both filled it gives my Pathfinder about 1" of extra lift while towing our travel trailer. So, the trip to the campground is fine but then I have to find an air pump for the trip home or tow with it lower. If they would both stay filled I would give them a 5 star rating. I contacted etrailer support and was told that I had to contact Firestone for warranty support. I have emailed (can't find a phone number on their web site) them twice with no reply.
by: Joseph01/27/2024
Great product. I must say that they were a little tough to install. A very tight fit. Fortunately for me I had the availability of a vacuum pump. With that I was able to evacuate all the air out of the bags which made them flatter, with that, it made it easier to slide them between the coil springs. I tow a small camper trailer, I usually run around 20 psi in the bags. This keeps my vehicle level and adds for a smooth ride. A great product.
by: Eric 05/02/2024
I'll preface with I am an average do it yourselfer. I tried I stalling them on my VW Atlas for almost 3 hours before I just quit. I had to have them professionally installed. The installers said it took two of their people trying to fit the air rites in each spring. After installation they have been fine. My vehicle drops a little when I hook up boat but not a problematic amount. They hold air for quite a while and have not made any noise while traveling. They work as should. Just be prepared to pay for an install in event you cannot get them in.
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See what our Experts say about this Firestone Vehicle Suspension
- Replacement Inflation Valve for Firestone Air Bag KitSounds like you are looking for a inflation valve like the part # F3032-1.
view full answer... - Firestone Coil-Rite Air Helper Springs # F4136 for 2011 Toyota PriusAccording to my contacts at Firestone, the Coil-Rite Air Helper Spring kit you mentioned, part # F4136 will indeed fit the 2011 Toyota Prius. When installing the system, it is crucial that the cuts made in the air line be absolutely square to avoid air leakage. We recommend using a tubing cutter like part # AL10530. Keep in mind that the Air Helper springs will not increase the capacity of your vehicle. For installation details, click the provided link.
view full answer... - How Often Should I add Air to my Firestone Coil-Rite Air Helper Springs on my 2015 Toyota PriusWhen using the Firestone Coil-Rite Air Helper Springs Part # F4136 on your 2015 Toyota Prius you should not have to add air on a regular basis. I sometimes see a slight pressure loss when it goes from hot outside to cold and you'll have to add a bit to get it back to pressure similar to the way a tire on a vehicle fluctuates up and down slightly with weather. If you are adding air on a regular basis to the bags to maintain your desired pressure then you have a leak in the system and...
view full answer... - Does Firestone Coil-Rite Air Helper Spring Kit # F4136 Fit 2014 Toyota YarisThe Firestone Coil-Rite Air Helper Spring Kit # F4136 that you referenced is indeed a correct fit for your 2014 Toyota Yaris as indicated on etrailer's fit guide. The Firestone website just has not been updated. I confirmed with my technical contact there that this kit is a correct fit. The installation instructions are linked for your reference. If you wish to avoid the need for manual inflation of the air bags you might consider the Firestone Level Command II, part # F2158, which allows...
view full answer... - Availability of Suspension Enhancement that Fits 2014 Toyota PriusWe have suspension enhancement that fits your 2014 Toyota Prius with the Firestone Coil Rite kit part # F4136 but we do not have any Coil SumoSprings Kits that fit your vehicle.
view full answer... - Rear Suspension Enhancement for a 2006 Toyota PriusFor the 2006 Toyota Prius we do have one option that will help with a sagging rear end. You can use the SumoSprings, # CSS-1145R. These guys will fit in the spaces between coils on the rear coil springs and take care of the rear end squat. Suspension enhancement is meant to be installed on a vehicle that has suspension that is in good working order. I recommend having the rear suspension checked out first just to be safe. I have linked a video showing a typical installation of SumoSprings...
view full answer... - Is an On-board Air Compressor Needed to Use Firestone Coil-Rite Air Helper SpringsYou do not have to have an on-board compressor or control unit to use the Firestone Coil-Rite Air Helper Springs # F4136. To add air you would need to use a compressor of some kind. If you happened to have a portable one that would work. Otherwise you could use the ones at gas stations. To remove air you would just have to depress the valve, just like letting air out of a tire. I have included a link to the installation details for you. Having the suspension enhancement at the rear only...
view full answer... - Is There Reason Not to Inflate Firestone Coil Rite Air Bags to Same PSI The only time it would be advantageous to have ability to inflate the air bags of the Coil Rite # F4136 separately would be if you had an uneven load from left to right that you were trying to level out. For a union tee to allow you the ability to inflate both bags to same PSI you could easily use the part # F3105-1.
view full answer... - Suspension Enhancement Recommendation for 2013 Toyota PriusWe actually only have one suspension enhancement fit we can recommend and it's only for the 2013 Toyota Prius and not the V. For that you'd want the Firestone air bag kit part # F4136. The SumoSprings you mentioned cannot be used on the Prius.
view full answer... - Will the Firestone Coil-Rite Air Helper Springs Part # F4136 Raise/Lower My VehicleThe Firestone Coil-Rite Air Helper Springs part # F4136 will not raise or lower your 2014 Toyota Prius whether they are deflated to the minimum psi (5) or inflated to the maximum psi (35). Some of the benefits of these air bags include: keeping your vehicle level when you are hauling a heavy load, improving steering control/balance, and reducing tire wear. To cut the airlines, you will want to use theTubing Cutter part # AL10530 to ensure you are receiving a secure and snug connection...
view full answer...
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Michael
6/30/2020
They still function like day one after the install. Have to add air every other week, sometimes longer if Im not transporting passengers in the rear seats