bing tracking image
  1. Vehicle Suspension
  2. Firestone
  3. Air Springs
  4. Rear Axle Suspension Enhancement
  5. Light Duty
Firestone Coil-Rite Air Helper Springs - Rear Axle
Firestone

Firestone Coil-Rite Air Helper Springs - Rear Axle

Part Number: F4150
In Stock
$118.63
Retail:$189.42
You Save: $70.79
Vehicle Suspension

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

In Use/Installed

Customer Photos

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. Great Prices for the best vehicle suspension from Firestone. Firestone Coil-Rite Air Helper Springs - Rear Axle part number F4150 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (671)
  • Q & A (0)
  • Photos

Firestone Vehicle Suspension - F4150

  • 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 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.


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.



W237604150 Firestone Coil Rite Air Bags - Suspension Kit - Rear Axle

4150

Installation Details F4150 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Firestone Coil-Rite Air Helper Springs - Rear Axle - F4150

Average Customer Rating:  4.4 out of 5 stars   (671 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:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:


25
671
Show More Reviews

See what our Experts say about this Firestone Vehicle Suspension

  • Recommended Compressor System For Firestone Coil-Rite Air Helper Springs on a 2019 Nissan Armada
    I recommend the Air Lift WirelessONE Compressor System # AL25980 with the Firestone Coil-Rite Air Helper Springs # F4150. This wireless compressor will make installation much easier on your 2019 Nissan Armada as you will not have to run air lines into your cab for a controller or gauge. You can also connect your smartphone with the Air Lift wireless app for over the air updates to the controller as well as using your smartphone as a controller.
    view full answer...
  • Will Firestone Air Helper Springs Work On A 2018 Nissan Armada With OEM Air Suspension
    The Firestone Coil-Rite Air Helper Springs # F4150 will work with your OEM air suspension on your 2018 Nissan Armada as long as the air bags are not installed in the coil springs. The air bag kit has a load-leveling capacity of at least 500 pounds (at most 1,000 pounds). It has an adjustable air pressure of 5 psi to 35 psi. The air bags are made of a durable , elastic polyurethane. I attached an installation video link below.
    view full answer...
  • Will Firestone Coil-Rite Air Bag Kit Fit with Auto-Leveling on a 2021 Nissan Armada
    Usually when a vehicle has an auto-leveling feature it won't be compatible with air bags as they would be working against each other. With that being said, the Firestone Coil-Rite Air Helper Springs # F4150 on your 2021 Nissan Armada are an exception since all Armada years have that auto-level feature. For your application this will all fit and work just fine. I've sent an update on the other answer page you referenced so we can make sure all of the information on our site is in agreement.
    view full answer...
  • Will Timbren Rear Helper Springs Fit a 2014 Nissan Armada SL 2-Wheel Drive
    The picture you have provided looks like the 2014 Nissan Armada 2-wheel drive model that you have does have a bump stop and Timbren does not exclude 2-wheel drive models so you will be able to use Timbren springs # TNRARM. I have linked a help article on Timbren springs for you. You could also use Firestone air bags # F4150 which will fit inside of the rear coil springs.
    view full answer...
    Image 1 for
  • What PSI Should My AirBags Be At When I Am Not Pulling A Trailer?
    When not towing/pulling anything with your Nissan Armada, the Firestone Coil-Rite Air Helper Springs - Rear Axle # F4150 should be inflated to a minimum of 5psi to prevent the bags from deforming without any air in them. When towing, you want to start inflating the bags according to how much your vehicle is sagging at the rear, and stop inflating when the vehicle is at its normal ride height. Remember to never exceed 35psi with this system. I attached a helpful demonstration video for you.
    view full answer...
  • Will Firestone Coil-Rite Air Helper Springs Fit with OEM Air Suspension on 2017 Nissan Armada
    The Firestone Coil-Rite Air Helper Springs # F4150 will work with the OEM air suspension on your 2017 Nissan Armada as long as the air bags aren't installed inside the coil springs (see attached photo). I tried looking up where the air suspension bags sit on your Armada but I wasn't able to find the location. Attached is a sample installation video of this kit on a 2011 Armada for you to reference. With that being said, if you are using a weight distribution (WD) system already then you...
    view full answer...
    Image 1 for
  • Recommended Solution to Fix Sag on 2018 Nissan Armada SE Towing Trailer with Weight Distribution
    There could be a few things at play here, but since you're already using a weight distribution system I think the first thing I would do is check to verify that my tongue weight is not more than 15% of the GVWR of the trailer; it looks like the 2018 Rockwood Mini Lite 2109s has a GVWR of around 5700-lbs, so you'll want to confirm that it's no more than 850-lbs using a tongue weight scale like the # 5780 (850-lbs is the maximum tongue weight for a 2018 Armada). If you're over weight at the...
    view full answer...
    Image 1 for
  • Recommended Air Bags for a 2017 Nissan Armada
    I show the Firestone Coil-Rite Air Helper Springs part # F4150 as a confirmed fit for all models of the 2017 Nissan Armada. Just to be sure, I checked with Firestone and was able to confirm fit on your Armada. Therefore, you will be good to go with the above airbags.
    view full answer...
  • How To Get Proper Ball Height When Setting Up WDH On 2012 Nissan Armada
    It sounds like you are trying to setup a weight distribution system. If that is the case then you'll need to first level the trailer and measure from the ground to the bottom of the trailer coupler. Then, measure from the ground to the top inside edge of the trailer hitch opening on the vehicle. The difference should be the amount of rise/drop you need for the shank and where to position the head. I am certain this is further explained in the owner's manual for the system. If you still...
    view full answer...
  • Weight Distribution Used With Auto-Level Rear Suspension on 2018 Nissan Armada
    The auto-leveling system can make it tricky to set up a weight distribution system, as it can vary the amount of pressure in the system according to the load and suspension movement. If it's possible to shut off the system and then proceed to set up the weight distribution system for towing purposes, that's certainly the way to go. I checked through the owner's manual, and wasn't able to determine if the auto-leveling suspension system could be deactivated. If that isn't possible, I'd...
    view full answer...
  • What Are The Minimum and Maximum Air Pressures Allowed In The Firestone Coil-Rite Air Springs F4150?
    The Firestone Coil-Rite Air Helper Springs # F4150 for your 2005 Infiniti QX56 require a minimum of 5psi to prevent damage to the bags. The maximum air pressure should not exceed 35psi or you risk damaging the bags. I find having an onboard compressor like the Air Lift WirelessONE Compressor System # AL25980 will help you dial in your ride quality while you drive. This system includes a wireless remote that will allow you to adjust the suspension while you drive or from outside the vehicle...
    view full answer...
  • Recommended Suspension Enhancement for a 2019 Nissan Armada
    The only suspension enhancement option for a 2019 Nissan Armada is the Firestone Coil-Rite Air Helper Springs part # F4150. That said, these airbags are only for models without factory auto-leveling suspension. If you have factory auto-leveling suspension then the only thing that will help with tongue weight is a weight distribution system. I recommend the Equal-i-zer Weight Distribution System w/ 4-Point Sway Control part # EQ37100ET. It is possible to rearrange items on the trailer to...
    view full answer...
  • Suspension Enhancement for 2015 Nissan Armada SV Towing Trailer
    We have the Firestone Coil Rite air bag kit part # F4150 that is a confirmed fit for your 2015 Nissan Armada SV and will allow you to add air pressure when needed to get rid of squat. This is a great and relatively easy solution to get rid of squat so we do recommend it.
    view full answer...
  • Will the Firestone Coil-Rite Air Helper Springs Fit a 2005 Infiniti QX56
    The Firestone Coil-Rite Air Helper Springs # F4150 are confirmed to fit your 2005 Infiniti QX56 and will install inside of the rear coil springs just like on the Nissan Armada. I would recommend replacing your worn springs as well. These are designed to enhance your suspension by increasing stability and helping to keep your vehicle level when hauling a heavy load. I have attached an installation and review video for your reference.
    view full answer...
  • Recommended Weight Distribution and Suspension Enhancement for 2015 Nissan Armada
    Your 2015 Nissan Armada should have no problem when towing your Keystone Hideout trailer that is 3,800 lbs. It sounds like the squat you are experiencing is due to a weight distribution system that is not rated correctly, not set up correctly with the stacked washers, or that you would benefit from suspension enhancement. For your weight distribution setup, you want to account for the total tongue weight which includes the completely loaded tongue weight of the trailer along with any...
    view full answer...
    Image 1 for Image 2 for
  • How to Get the Air Tubing Out of Spring in Firestone Coil-Rite Air Springs F4150
    Where the 3 inch tubing meets the air spring in kit # F4150 there is a collar that holds in the tubing. Push that collar towards the air spring and you will be able to pull out the tubing with your other hand. The little collar holds the tube in by compression. Pushing it in towards the spring releases the tension.
    view full answer...
  • Which Firestone Coil-Rite Air Springs For 2018 Nissan Armada
    Hey Gary, I checked with Firestone for you and the only air springs that fit your 2018 Nissan Armada are the following: - Firestone Coil-Rite Air Helper Springs # F4150 So those are definitely the ones you want to buy, and the only other thing I recommend considering is a compressor to keep the psi in check, like the Air Command # F2610.
    view full answer...
  • Locating an Installer For Air Bag Helper Springs For a 2023 Nissan Armada
    Below the product images for the Firestone Coil-Rite Air Helper Springs # F4150 which fits your 2023 Nissan Armada you will find a link "Locate installers near me". This will allow you to search for installers along your route to determine which one will be able to help you during the timeframe you need. I recommend also installing the Air Lift WirelessAIR Compressor System # AL58WQ when you install the air springs. This compressor includes a smart manifold which will allow you to make...
    view full answer...
  • How To Prevent Suspension Sag On 2019 Nissan Armada W/ Auto Leveling Suspension When Towing
    I have another option for you, but the Firestone Coil-Rite # F4150 you were looking at are not compatible with the Auto Leveling shocks on your 2019 Nissan Armada. Using the two together causes issues when the factory shocks try to level your Armada. The only option to prevent sag is going to be using a weight distribution hitch, as there is no other rear suspension enhancement options for your vehicle. What a weight distribution hitch does is distributes the weight of the trailer from...
    view full answer...
  • Can Firestone Coil-Rite Replace Air Suspension in 2018 Nissan Armada
    Hi Tim, Does your 2018 Nissan Armada have the auto-leveling suspension, and air springs for that? Is that what you are referring to? If so then no, you wouldn't be able to replace them with the Firestone Coil-Rite Air Helper Springs # F4150. These will only work as additions to an Armada that does not have the air suspension or current springs.
    view full answer...
  • Dimension of the Firestone Coil-Rite Air Helper Springs Part # F4150
    I do have a set of rear airbags for you but the Air Lift AirLift 1000 Air Helper Springs for Coil Springs part # AL60817 are not a confirmed fit for your 2017 Nissan Armada. For a set of rear airbags that are confirmed to fit your vehicle I recommending the Firestone Coil-Rite Air Helper Springs part # F4150. I went out to warehouse and measured these airbags for you and they measure 11-1/2" tall x 4-1/3" wide. As long as you have the factory rear coil springs installed on your vehicle...
    view full answer...
  • Suspension Enhancement Recommendation for a 2004 Nissan Pathfinder Armada
    For your 2004 Nissan Pathfinder Armada I recommend going with the Firestone Coil-Rite system # F4150. I have included a link to the installation details for you to view. Firestone makes a good quality suspension enhancement system and they also make the air bags for Air Lift. You can install the system as is and use your own air compressor or one at a gas station to fill the bags. Or you can get Level Command II kit, # F2158, which will allow you to add or remove air from the cab of the...
    view full answer...
  • Suspension Enhancement for 2018 Nissan Armada to Reduce Suspension Sag
    Yes the Firestone Coil Rite kit part # F4150 will do a great job reducing the rear suspension sag of your 2018 Nissan Armada when towing and would work great with your Equalizer system.
    view full answer...
  • Will The Firestone F4150 Air Bags Fit A 2011 Infiniti QX56
    The Firestone Coil-Rite Air Helper Springs # F4150 is designed to fit inside the rear coil spring of an Infiniti QX56 from 2004 to 2010 as long as they are not equipped with an Auto-Leveling Suspension system. From what I could find out, the 2011 model year of QX56 all came with this style of leveling system. With that being said, the only upgrade we have for your vehicle will be the Stability Plus Stabilizer Helper Springs # SPS97FR that is designed to attach to rear factory leaf springs.
    view full answer...


< Previous
12



Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Leah B
Updated by:
Leah B
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Daron K
Updated by:
Daron K
Employee Alex H
Updated by:
Alex H
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Tyler C
Written by:
Tyler C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Shane H
Test Fit:
Shane H
Employee David F
Test Fit:
David F
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Video by:
Michael B
Employee Robert C
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