1. Vehicle Suspension
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  3. Escalade
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FITS 2007 Cadillac Escalade
Firestone Coil-Rite Air Helper Springs - Rear Axle

Firestone Coil-Rite Air Helper Springs - Rear Axle

Item # F4108
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Vehicle Suspension
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2007 Cadillac Escalade

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Firestone Vehicle Suspension - F4108
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Call etrailer.com at 800-298-1624 for expert service. We are your Cadillac vehicle suspension experts, and offer a lowest price guarantee. etrailer.com carries a complete line of Firestone products for your Cadillac Escalade 2007. Firestone Coil-Rite Air Helper Springs - Rear Axle part F4108 from Firestone can be ordered online at etrailer.com. Complete vehicle suspension installation instructions and technical support.
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2007 Cadillac Escalade - Firestone Coil-Rite Air Helper Springs - Rear Axle

  • Air Springs
  • Rear Axle Suspension Enhancement
  • Firestone
  • 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 Cadillac Escalade, 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 25 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.



W237604108 Firestone Coil Rite Air Bags - Suspension Kit - Rear Axle

Firestone 4108

Installation Details F4108 Installation instructions


Customer Reviews

Firestone Coil-Rite Air Helper Springs - Rear Axle - F4108

Average Customer Rating:  4.5 out of 5 stars   (364 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.

- F4108
by:

Work great, totally stiffened up my rear suspension. I bought these for a 2007 Tahoe LTZ. Rear was sagging when towing a grey wolf 23dbr trailer. Also combined these with the sumosprings(from etrailer) and a 1 inch lift(purchased elsewhere). Together this was everything I needed to eliminate the sag. Thanks etrailer!!



- F4108
by:
2003 GMC Yukon

The air bagsy fit nicely into the coil springs so there are really no modifications needed to install them. The exhaust shields are easily shaped to fit onto the tail pipe where it wraps over the axle. The only hic- up I had was the installation instructions did not include a diagram of the hose routing for my vehicle, which tells you to mount the bags with air line out the top or out the bottom. I found there was more room out the top and a shorter route for the air lines to be ran.


Comments
Tim, Firestone does not include instructions on howwhere to run the lines as so many people want or need to locate them differently, even on the same vehicle.Some like the fittings mounted through the bumper for easy access, others like them hidden underneath, and others still need to run them forward to a remotely controlled air compressor under the vehicle.
-- Etrailer Expert Patrick B - 01/21/2013


- F4108
by:

Used on my wifeys 2013 suburban for a loaded cross country trip with a full cargo area and loaded hitch rack, lifted the back end back to normal ride height, and unloaded provided a “cushier” ride.



- F4108
by:

Easy install, great product, great ride. Great lift when needed



- F4108
by:

I have a 2011 Avalanche and it became evident towing our 24' Trail Runner (6000lbs) that not only would I need the double sway system on the hitch but the Avalanche also needed more stability in the rear end. I purchased 'Firestone Coil-Rite Air Suspension' bags as an inexpensive way of meeting the demands of towing, and true to the advertisements, descriptions, and video, the Avalanche holds the road with little roll or recoil from the diverse conditions we have encountered over a distance so far of 12,000 miles (20,000kms). I run the bags at 20psi (max is 30psi) with and without the trailer. I left the installation of the bags to my mechanic and he was quite impressed with the simplicity and effectiveness of the system. Many thanks!



- F4108
by:
2010 GMC Yukon

Leveled out my Yukon. Good for long hauls. Keep pressure. I check them before every haul and have not had to add air. I deflated them down to 10 psi over the winter since I only use my truck to tow a camper. The ride was similar to the original but with less body roll. They are well worth the money and take little effort to install. I would recommend coupling these with a higher load rated tire as well. I put on some Kumho AT's that were a bit grippy and load range E. It rides like a 3/4 truck when I have everything inflated and like my wife's luxury SUV again when I let some of the air out. Great combination.



- F4108
by:
2000 Chevrolet Tahoe

Having had them on for a year now...Excellent! I was skeptical because of the cheap price as I am used to the higher quality rubber/metal frame units but they have done the light duty job I bought them for. Installation was challenging in order to squeeze them through the coils but it is do-able. I mounted these inside of a 2000 Tahoe. I mounted the bags with the air line to the top and ziptied the lines along the wiring conduit. Valves were installed in the rear bumper next to the plate which is perfect because at night time they are illuminated by the plate lights. I run 20lbs at all times. One thing I would recommend is buying an airline T and using only one air line for fill/deflate. Two is a pain. I used to have one on my old set up and it was far easier. The T collects both lines behind the bumper. Enjoy.



- F4108
by:
2014 Cadillac Escalade

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.



- F4108
by:
2009 Chevrolet Avalanche

The directions are set up to cover a wide variety of vehicles. There are pages inserted for adjustments to the instructions for a smaller group of vehicles closely related to mine. I still found them confusing and not very clear. Once I got past trying to do exactly what the instructions (or at least the pictures) were saying, I was able to just look at my setup and install the air springs. The picture for the inserted heat shield instructions was the most confusing because it shows the air hose on the top but for my Avalanche (and I believe most late GM SUVs) the air hose is on the bottom. On the positive side the product appears to be of strong construction for the springs, hose, and the fittings. I'm confident it will greatly improve my Avalanche's ability to tow my trailer safely



- F4108
by:

Great product at a great price



- F4108
by:
2006 Chevrolet Avalanche

Very happy with this product. Easy installation. Air bags do not effect day to day driving even at max pressure since they are not as tall as the Spring it is inside, but are very effective once the weight has been added to make for safer handling.



- F4108
by:
2009 Chevrolet Suburban

Good product with a relative ease of installation with the right tools. Only improvement would be to add a Tee in to the air line so there is only one needle valve for adding air in to the system.



- F4108
by:
2004 Chevrolet Suburban

Plan on disconnecting bottom of shock and removing coil spring. Impossible to instal in coil spring while spring is on vehicle. Heat shields take a little time to get right



- F4108
by:

great product. etrailer staff couldn't be better



- F4108
by:

Very satisfied with excellent service and quality products.



- F4108
by:

I am very satisfied with your products your service and your shipping is fast and reliable



- F4108
by:
2005 Chevrolet Suburban

Very good product and very simple to in stall.



- F4108
by:



- F4108
by:
2007 Chevrolet Avalanche



- F4108
by:
2006 Toyota 4Runner



- F4108
by:



- F4174
by:

Review from a similar Coil-Rite in Vehicle Suspension


They work great. First I added a levelling kit then the Firestone ride rite for when I tow my boat. Really notice the difference when towing. With fully loaded tongue weight, rear suspension dropped .75 inches, added 10psi to the bags and brought it back up .5 inches.


Comments
Its been great one of the best additions to use when towing. I recommend it for anyone that tows or adds excessive weight in the rear.
Chris K - 11/12/2021


- F4170
by: 05/31/2021

Review from a similar Coil-Rite in Vehicle Suspension


Is a great idea but awful material !! I think that if the quality of material is higher, this would be worth it !! I ordered a kit and I have a professional Install it. within an hour the air was all out !!! I took back and Found that the connections were leaking . So we replace them and next day. no air (again) in the air suspensions . Found out that the air spring is defective. Is not easy to install and is harder to get it fix ,if leaks . I don’t recommend this product unless is a higher quality!! Other wise is a headache



- F4175
by:

Review from a similar Coil-Rite in Vehicle Suspension


Easy install in less than 2 hours. I disconnected the shock absorber on one side to get a little more room, but I was still able to slip the bags in on the side I didn't disconnect. On my atlas cross sport, there was a plastic plug at the bottom of the coil in the lower control arm that needed to be removed.



- F4130
by:

Review from a similar Coil-Rite in Vehicle Suspension


Installed on my 2020 Ram 1500 4x4 ecodiesel. Took about 1 hour. Jacked up rear of vehicle to let coil spread out a little. Bags went in easy. Air lines were simple to run. Bought the union T-valve so I could air the bags up at same time and to make sure equal PSI goes to each bag.


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Show More Reviews

Ask the Experts about this Firestone Vehicle Suspension

  • Air Spring Comparison for 2007 Cadillac Escalade ESV
    Both the Firestone # F4108 and Air Lift # AL60769 helper springs are confirmed to fit your Cadillac Escalade as long as you don't have the auto-leveling option. If your Caddy has the auto-leveling you'll need to go with the Firestone. There isn't a lot to separate the two. They install the same and have the same purpose and ratings. Firestone does have the brand recognition. You really can't go wrong either way.
    view full answer...
  • Correct Firestone Coil-Rite Air Helper Springs for a 2009 GMC Yukon
    There are two Firestone Coil-Rite Air Helper Springs for a 2009 GMC Yukon (All Models), part # F4186 if you have the factory autolevel suspension or part # F4108 if you don't. I just recently installed these on a Chevy Avalanche (Same Coil Springs) if you would like to take a look.
    view full answer...
  • What Is the PSI Rating for Firestone Coil-Rite Air Helper Springs for 2010 Chevy Suburban
    The Firestone Coil-Rite Air Helper Springs part # F4108 which are a fit for a 2010 Chevrolet Suburban without auto-level suspension have a minimum pressure of 5 psi and a maximum pressure of 25 psi according to Firestone. The weight capacity is 1,000 lbs, you don't have to be at max psi to achieve this though you would most likely need to in order to reduce sag/squat. The air bags do indeed need to have at least 5 psi in them at all times.
    view full answer...
  • Rear Suspension Enhancement for 2003 Chevy Tahoe to Reduce Sag When Towing
    We have suspension enhancement that will help beef up the rear suspension of your 2003 Chevy Tahoe but nothing will give you more towing capacity than you have so you'll want to make sure you don't exceed your towing capacity. These kits will only help you tow within your capacity in a safer, more supported way. The Firestone air bag kit part # F4108 that you referenced is a fit for your Tahoe and will give you the rear suspension support you are looking for when towing.
    view full answer...
  • Firestone Air Bag Kit Recommendation for 2005 Chevy Suburban
    For a Firestone air bag kit that is a confirmed fit for your 2005 Chevy Suburban the correct fit is the part # F4108 and not the kit you mentioned.
    view full answer...
  • How To Help With Rear Sag While Towing With a 2007 GMC Envoy and Quality S WDH
    It does sound like the spring bars that you have are underrated for your trailer which is then not allowing the tongue weight to be transferred to the front of the tow vehicle which results in too much sag. As we do not carry the Quality S Weight Distribution System, I unfortunately would not have the correct replacement spring bars for you nor am I aware if they are even available. That said, the most cost effective option you have to help get rid of the sag would be to use the Firestone...
    view full answer...
  • Recommended Suspension Air Bags for a 2008 Chevy Avalanche with Factory Auto-Leveling Option
    What I recommend is going with the Timbren vehicle suspension # TGMRYS4 (2WD or 4WD)because the hollow rubber springs sit above the axle and they are easy to install. It will also be compatible with your auto-leveling system. Also, the Timbren suspension will offer progressive resistance, meaning they won't change the ride until you load up weight. The weight capacity is 6,000 pounds but don't exceed your Chevy Avalanche's weight carrying capacity. Keep in mind that adding any suspension...
    view full answer...
  • Suspension Enhancement for Lifted 2003 Chevy Z71 Suburban-1500 4x4 Used with Weight Distribution
    Thank you for including a photo of your 2003 Suburban 1500 and hitched Jayco toy hauler trailer. If your Suburban's suspension is still in good working order and not suffering sag from simply being well worn, and if the vehicle is being used within its rated towing capacity, then you should be able to correct the rear-end sag when towing your Jayco toy hauler by adjusting your weight distribution (WD) system. You will first want to confirm that the WD system is suitably rated for your...
    view full answer...
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  • Rear Helper Springs for a 2007 Chevy Suburban 1500 with Factory Auto-Leveling System
    I do have a solution for you but air springs such as # F4108 will not fit on a 2007 Chevy Suburban 1500 that has the factory auto-leveling option. What I recommend is to use Timbren helper springs # TGMRYS4 that fit in place of the factory bump stops because they won't interfere with the factory auto-leveling system. I have linked a video showing an example installation and a link to our informational article on Timbren springs for you to view.
    view full answer...
  • Replacement Air Spring Recommendation for a 2003 Hummer H2 with Firestone Coil-Rite Springs
    Yes, if you have the Firestone Coil-Rite Air Helper Springs # F4108 kit in your 2003 Hummer H3 you would want a Replacement Air Spring # F6003.
    view full answer...
  • Can Air Bag Helper Springs be Tied Into Air Shock Compressor on a 2008 Cadillac Escalade
    The air shocks on your 2008 Cadillac Escalade only have the capacity for a certain amount of air and the compressor system on the vehicle is designed for that. If you add volume by installing additional air bags the system may not function properly or in a way that you want it to. Instead of using the air bags with the air shocks I recommend using Timbren helper springs, # TGMRYS4. With this system there is no maintenance and you will not have to worry about air compressors at all. It...
    view full answer...
  • Tips for Reducing Harmonic Bouncing While Towing with Weight Distribution
    A couple things that can contribute to harmonic bouncing are improper tire type and improper tongue weight. You will want to be using LT tires as they have stiffer sidewalls which are better for towing than P rated tires. Also, be sure that your tongue weight is between 10-15 percent of the total trailer weight. You may need to move cargo around in your trailer to accomplish this. Lastly you will want to verify that your WD system is setup properly.
    view full answer...
  • Towing Capacity of a 2011 Chevrolet Avalanche with HD Towing Package
    According to the owner's manual for your 2011 Chevrolet Avalanche, if you have the HD towing package and it is 2WD than your maximum towing capacity is 8,100 lbs but if you have the HD towing package and it is 4WD than your maximum towing capacity is 7,900 lbs. Regardless of if you have 2WD or 4WD, the gross combined weight rating (GCWR) which is the maximum weight allowed for the vehicle with cargo and a trailer is 14,000 lbs. With that being said as long as your trailer and cargo...
    view full answer...
  • Weight Distribution System Recommendation for a 2006 Chevy Trailblazer
    The Timbren suspension system part # TGMRETB that you referenced has been confirmed to fit your 2006 Chevy Trailblazer so it would work on your vehicle and would provide you with additional support for your rear suspension. If you prefer the adjustability of an air ride, then the Firestone Coil-Rite Air Helper Springs # F4108 are a great option. The best solution though would be to go with a weight distribution system as suspension enhancement is more designed for carrying heavy loads...
    view full answer...
  • Recommended Rear Suspension Enhancement For 2004 GMC Yukon W/ Air Leveling Shocks
    I have another option for you, but the Firestone Coil-Rite Air Helper Spring Kit # F4108 you were looking at is not confirmed to fit your 2004 GMC Yukon with the air leveling shocks. Instead you will need the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-204-40 which will work around your factory air leveling shocks and will give you up to 1000lbs of load leveling support when towing a trailer or carrying a heavy payload. I included a video of the # SSR-204-40 for you to...
    view full answer...
  • Suspension Enhancement for a 2003 Chevy Tahoe with Auto Level Rear Suspension
    I recommend installing a set of Timbren springs for added support. They will provide the support you need without having to run air lines and fill up or deflate air bags. Please keep in mind that adding Timbren springs or any suspension enhancement product may not stop the auto-leveling motor from running, but there is a very good chance that it will. If you have a 4-wheel drive model use # TGMRG25C. For a 2-Wheel drive model use # TGMRYS4. Be sure to check your vehicle owners manual...
    view full answer...
  • Helper Springs for a 2002 Chevy Avalanche Z71 with 6 Inch Lift
    Since the springs are longer than stock on your 2002 Chevy Avalanche air bags that fit inside the springs, such as # F4108 will not work. There are not spacers available that would work either. But I do have a solution for you. You could use Timbren springs # TGMRG25C for a 1500 or # TGMRSB4S for a 2500. Then you would need 8 of the 1 inch spacers, # A25723-90AH00, 4 for each side. Timbren does not recommend using any more spacers than that so there will still be a little travel before...
    view full answer...
    Image 1 for
  • How to Reduce Sag on 2018 Chevy Suburban Premier with Weight Distribution System Already Installed
    If you are still getting a lot of rear sag on your 2018 Chevy Suburban Premier when hooked up to your trailer the first thing I recommend doing is simply checking to make sure your existing weight distribution is both properly rated and correctly adjusted. It is important that your setup's total tongue weight, which includes the loaded weight of the trailer along with any additional cargo weight coming from behind the rear axle of the Suburban, falls comfortably within the system's operating...
    view full answer...
  • Troubleshooting Bouncy Ride on a 2014 Chevy Suburban 1500 When Using Weight Distribution
    It is not recommended to use any type of suspension enhancement when using a weight distribution system. The two systems will work against each other and would provide an unsafe, unpredictable ride quality. Your best option would be to make sure the weight distribution system you are using is rated for your setup and that it is set up properly. If your system is rated for your trailer you can check out the link I attached that has all of the Reese spring bars we offer. You will want...
    view full answer...
  • Suspension Enhancement Recommendation for 2016 Chevy Suburban
    Considering the relative light weight of your trailer I would go with a suspension enhancement setup for your 2016 Chevy Suburban to reduce the sag. For that the air bag system par # F4108 will give you the flexibility in support to allow you to tailor the amount of support you would need. The sag is related to the ride quality everyone wants now. Stiff suspension rides rough and nobody wants to deal with that any more. So the soft suspension allows the ride quality to be great but at...
    view full answer...
  • Firestone Coil-Right Air Helper Springs Fit 2007 Chevrolet Suburban 1500
    I believe you are referring to the Firestone Coil-Right Air Helper Spring # F4108. The # F4108 suspension enhancement kit is confirmed to fit the 2007 Chevrolet Suburban 1500. I have attached the installation instructions from the kit for you to check out. If this is not the product you were referring to, please let me know the correct product and I will be happy to find an answer for you.
    view full answer...
  • Availability of Suspension Enhancement For the Rear of a 2002 Chevrolet Suburban 1500 4WD
    For your 2002 Chevrolet Suburban 1500 4WD I have the Timbren Rear Suspension Enhancement System, part # TGMRYS4, that you have referenced. These are hollow rubber springs that will become more rigid as more weight is added. The weight capacity is 6,000 lbs. I am including a link to the installation instructions on the Timbren system. Also, I have the Firestone Coil-Rite Air Helper Springs-Rear, part # F4108, for your vehicle. This air springs will fit inside your coil springs and can...
    view full answer...
  • Comparing Timbren and Firestone Vehicle Suspension Enhancement for a 2003 Chevy Avalanche 1500
    In terms of capacity, the Timbren Rear Suspension Enhancement System, # TGMRG25C, for a 2003 Chevy Avalanche 1500 has quite a bit more; a total capacity of 6,000 pounds. Compare that to the maximum 1,000 pound capacity of the Firestone Vehicle Suspension, # F4108. Both systems will offer similar benefits including helping to keep loads level, improved steering and balance, a better ride, and will prevent the vehicle from bottoming out. The Firestone system can be leveled side to side...
    view full answer...
  • Why Would Tow Vehicle Still Sag with Andersen Weight Distribution System being Used
    The Andersen weight distribution system isn't as effective as other systems. The reason you are still experiencing sag with a weight distribution system is solely because of how ineffective that system is. The chains they use instead of spring bars just doesn't work as well. Your best solution is going to be to go to a more effective system like the Reese kit part # RP66541 which will easily allow your Suburban to sit level. Suspension enhancement like the Coil Rite kit part # F4108...
    view full answer...
  • Troubleshooting a 2002 Chevrolet Tahoe that Sways
    If the factory sway bar on your 2002 Chevrolet Tahoe needs to be replaced use # RM-1109-168. If the suspension system of the Tahoe is in good working order and you're looking to improve the ride while under a load you can use a suspension enhancement system. The Firestone Coil-Rite Air Helper Springs # F4108 are confirmed to fit your Tahoe and help improve its stability. The springs install inside the existing factory coil spring suspension.
    view full answer...
  • Weight Distribution and Sway Control Recommendation For a Pole Tongue Snowmobile Trailer
    The first factor that we will want to check is how much room is available on your pole tongue. To use weight distribution with a pole tongue, you will need a pole tongue adapter. Our best option is the Reese Pole-Tongue Adapter, # RP58393, because it requires the least amount of tongue space. This adapter must mount at least 29 inches back from the center of the ball coupler on your trailer. If you do not have 29 inches available, then there are no adapters available and at that point we...
    view full answer...
  • Suspension Enhancement Recommendation for a 2007 GMC Yukon
    It sounds like you are actually looking for a rear suspension enhancement setup for your 2007 GMC Yukon. The part # F9000 is just a replacement part for a system that isn't designed for your vehicle. Because of that I would not recommend it for you regardless of it's dimensions. Instead you would want the Firestone Coil Rite kit part # F4108 as it has been confirmed to fit your vehicle and comes with all of the necessary hardware.
    view full answer...
  • Air Spring Options For 2004 Chevy Avalanche 1500
    So we do have an option for air suspension kits for your 2004 Chevy Avalanche 1500 (so long as it does not have the AutoRide auto-leveling), but I checked directly with the manufacturers and there are no standard air bags that fit your truck. What does fit are air bags that install inside your truck's coil springs; so while they don't fit the same way as air bags on the axle, these springs do provide a great deal of added suspension support. Like standard air bags, the air bags that...
    view full answer...
  • Firestone Air Helper Springs for a 2007 Chevy Suburban 1500
    We have numerous suspension enhancement components available for a 2007 Chevy Suburban, see link. If you are looking for Firestone air helper springs, you can use # F4108. I have included a link to the installation instructions. I have also included some links to FAQ articles covering Firestone products. You can inflate the springs using an air compressor like you might find at a gas station, but you can also add a kit with an on-board compressor so you never have to leave the vehicle....
    view full answer...

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