See what our Experts say about this Firestone Vehicle Suspension

• Dimensions Of Replacement Air Spring for Firestone Coil-Rite F6003
  Hello Carlos. I took a walk out to our warehouse and got one of the Firestone # F6003 Coil-Rite springs in hand. I can confirm the diameter is 4.75" and the height is 10", as you can see in the picture below. This # F6003 spring is intended to be a replacement for the Firestone # F4108 and # F4121 kits. What vehicle is this going on?
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• 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.
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• 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 will...
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• 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.
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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.
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• 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.
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• 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.
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• How do You Install Air Springs on a 2002 Chevrolet Trailblazer
  Firestone offers a kit for a 2002 Chevrolet Trailblazer 2WD, part # F4108. The air springs fit inside the coil springs and can be inflated or deflated depending on load. I have provided a link below to the instructions that come with the kit and walk through the installation. You would jack the Trailblazer until all the weight is off the rear axle and the rear suspension is fully extended. From here you can put the Air Helper Springs inside the coil springs. If more room is needed, the...
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• Best Suspension Enhancement For 2007 Chevy Suburban 1500 For Towing
  The best option for helping get your 2007 Chevy Suburban 1500 level and helping remove the squat while are the Firestone coil springs, with the correct part number for your Suburban being the following: - Firestone Coil-Rite Air Helper Springs # F4108 The Coil-Rite # F4108 install inside your Suburban's coil springs, and when you inflate them your springs become more effective, cushioning the load to help level you out, improve stability, and also reduce body roll. This is particularly...
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• 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...
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• 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...
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• 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...
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• 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...
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• Air Bag Suspension Enhancement for 2012 Chevy Suburban
  For an air spring kit that fits your 2012 Chevy Suburban 1500 you'd want the Firestone kit part # F4108 if the vehicle does not have the auto leveling rear suspension or the part # F4186 if you do. Air Lift only has a system that fits without the auto leveling system part # AL60769.
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• 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 fit...
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• 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 are...
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• 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...
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• 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.
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• 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...
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• Rear Suspension Enhancement Options For a 2004 Cadillac Escalade EXT AWD
  I see you were looking at the Timbren and Firestone Coil-Rite for your 2004 Cadillac Escalade EXT. You will want to use either the Timbren Rear Suspension Enhancement System # TGMRG25C or the Firestone Coil-Rite # F4108 on your Escalade. These systems are both confirmed to fit your vehicle. The Timbren I find work best if they are always hauling a heavy load. So if you are only using it for carrying additional weight in your bed or hauling a trailer this is the better option for the most...
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• 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 to...
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• Weight Distribution or Suspension Enhancement For 2001 Chevrolet Suburban Towing a 26 Foot Trailer
  I recommend to first check the gross towing weight (GTW) capacity and tongue weight (TW) capacity on your Class III hitch that is on your 2001 Chevrolet Suburban 1500. Most Class III hitches are rated for 6,000 lbs GTW and 600 lbs TW without weight distribution and 10,000 lbs GTW and 1,000 lbs TW with weight distribution. Some Class III can be listed as 3,500 GTW and 350 lbs TW capacities and not rated for use with weight distribution. A weight distribution system, like the Reese Weight...
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• 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.
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• Rear Suspension Enhancement Recommendation for 2013 Chevy Avalanche
  Hey Eric, I would recommend going with the Firestone air bag kit part # F4108 for the rear suspension of your 2013 Chevy Avalanche. This will give you the support you are looking for and is easily adjustable.
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