Firestone Coil-Rite Air Spring Kit | Rear

SKU 4135

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Firestone 4135 Coil-Rite air spring kit fits rear applications for the Toyota 4Runner, FJ Cruiser and Lexus LX570. Firestone air springs help to improve steering control and braking effectiveness and match your vehicles load for an overall improved ride. Includes everything you need for a quick installation.

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Product Specs for Firestone W237604135

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Firestone W237604135 Details

Firestone Coil-Rite Air Helper Springs

Firestone air helper springs are designed to fit inside existing coil spring suspensions, creating a variable rate spring. These air helper springs are made of durable, elastic polyurethane providing years of comfort and stability to your vehicle.

Coil-Rite air helper springs provide extra support for coil springs in cars, minivans, vans, light trucks, RVs and SUVs. The complete adjustability of these air helper springs will level your vehicle, provide a smoother ride, more effective braking and handling, even under heavy loading and adverse road conditions.

Firestone's Coil-Rite air helper springs enable adjustment for varying loads and road conditions by inflating or deflating the air helper springs. Spring performance can be altered as easily as inflating a tire. The air springs will support 500-1000 lbs per set.(Note: Do not exceed the vehicle's recommended Gross Vehicle Weight Rating)

firestone coil rite
Features & Benefits of Coil-Rite air helper springs and air bag kits
  • Increase Vehicle Stability
  • Improve steering and balance
  • Improve braking effectiveness
  • Prevent bottoming out
  • Maintain a level vehicle
  • Keep headlights aimed on the road
  • Reduce tire wear

Basic Kit includes everything for a quick installation:

  • 2 Air springs
  • Supports
  • Hardware
  • Air line
  • Separate inflation valves for manual inflation
  • Average Installation time 1 hour

Vehicle Application Guide for Firestone W237604135

The 4135 Firestone Coil-Rite Air Spring Kit | Rear is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Firestone Coil Rite to view all vehicle makes and models.

  • Lexus
  • Nissan
  • Toyota
YearMakeModelVehicle OptionInstallation Notes
1998 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
1999 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2000 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2001 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2002 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2003 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2004 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2005 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2006 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2007 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2008 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2009 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2010 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2011 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2012 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2013 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2014 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2015 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2016 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2017 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2018 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2019 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2020 Toyota 4RunnerFits 2 Wheel Drive; Fits 4 Wheel Drive
2013 Toyota FJ Cruiser
2014 Toyota FJ Cruiser
2011 Toyota FJ Cruiser
2012 Toyota FJ Cruiser
2010 Toyota FJ Cruiser
2008 Toyota FJ Cruiser
2009 Toyota FJ Cruiser
2007 Toyota FJ Cruiser
2014 Nissan RogueFits 2 Wheel Drive; Fits 4 Wheel Drive
2018 Nissan RogueFits 2 Wheel Drive; Fits 4 Wheel Drive
2017 Nissan RogueFits 2 Wheel Drive; Fits 4 Wheel Drive
2015 Nissan RogueFits 2 Wheel Drive; Fits 4 Wheel Drive
2016 Nissan RogueFits 2 Wheel Drive; Fits 4 Wheel Drive
2015 Lexus LX570
2016 Lexus LX570
2017 Lexus LX570
2018 Lexus LX570
2013 Lexus LX570
2014 Lexus LX570

Customer Q&A - Firestone W237604135


I have a 2004 4Runner V6. It's lifted 4" with a Toyotec lift. Will these air bags still work in the aftermarket springs? I'm looking to keep my truck at the lifted height while towing a camper. What will the towing/payload capacity increase be?

Asked
Firestone Coil-Rite air bags are designed for stock height coil springs. If you aftermarket coil springs are taller, the air bags will be too small. You can measure the inside diameter of your coil springs and we can see if there is a bag that matches those dimension. Feel free to call us at 1-800-358-4751.


does any one make a compressor system and a dual connection or even a single air compressor monitoring system

Asked
Firestone air compressor kit 2158 (single control) and 2178 (dual control) are the 2 most popular air compressor kits used with Firestone Coil-Rite kit 4135. If you are just looking to monitor how much air pressure is in your air bags, we recommend Firestone monitor kit FIR2196


i have an fj cruiser with 1" longer springs in the back when hauling my motorcycle the back end sags way down. do i need a longer bag to accomidate the longer spring lenght?

Asked
Yes, if you have taller than stock coil springs you will need taller air bags. Firestone Coil Rite kit 4135 has air bags that are 4.75 x 7.50. Firestone kit 4123 or 4107 have air bags that are 4.75 x 9.00. You will want to measure the inside diameter of your coil spring and verify the dimensions.


Is there a kit available for an FJ Cruiser with a 2 lift

Asked
Firestone does not make a stock kit for a FJ Cruiser with a 2 inch lift. The air springs in kit 4135 are 4.75 x 7.50. Firestone kit 4121 has springs that are 4.75 x 10.00 and kit 4107 has springs that are 4.75 x 9.00. You could measure the inside diameter of you coil springs and see if they are near these other kits. They are not designed specifically for a FJ Cruiser with a 2 inch lift, but should work fine if the inside dimensions of your coil springs match the air springs.


Do you have Kevlar Sleeves available to suit the 4135 Kit.

Asked
Firestone does not have Kevlar sleeves available for the Coil-Rite air springs in North America.


Do you offer a T valve for this product so that both bags can be inflated at the same time, rather than independently?

Asked
We do stock the T fitting for air spring kits, it is part 3025. All the Firestone Air Spring kits us 1/4 inch airline and part 3025 is a 1/4 inch T fitting designed for air spring kits. Thank You!


Firestone

Firestone Industrial Products has the largest North American infrastructure of any air spring manufacturer. Their experience and technical innovation dates back to 1938 with a patent for a pneumatic suspension device to be trademarked the Airide spring.

Firestone Industrial Products, a subsidiary of Bridgestone Firestone Diversified Products (BFDP), specializes in air spring manufacturing and technology with a history of more than 65 years of research and development of technologically advanced air springs. With headquarters in Indianapolis, Ind., and six quality certified manufacturing/assembly plants located on four different continents, the company produces suspension products for commercial trucks & trailers, cars, sport utility vehicles, light trucks, minivans, vans and motor homes.  For more information visit Firestone Industrial Products

Firestone HD Air Springs Warranty

2 Year Warranty

Firestone warrants its HD Air Spring products against defects in workmanship or material for a period of 2 years.

What this warranty does not cover

Damage from accidents, corrosion, improper installation, incorrect applications, overloading, and custom applications that are not specified under the OEM cross references. This warranty does not cover loss of freight, loss of profit, equipment, or personal downtime.

You can view the full details of Firestone’s warranty here.

How To Get Service

If your Firestone HD air spring failure results from a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

Firestone Ride-Rite Warranty

Limited Lifetime Warranty

On Air Springs included in Ride-Rite, Sport-Rite, Coil-Rite, and Level-Rite kits.

2 Year Warranty

On brackets and hardware included in Ride-Rite air spring and Ride-Rite compressor kits.

2 Year Warranty

On Work-Rite urethane products.

2 Year Warranty

On Heavy Duty, Xtra Heavy Duty, and Xtreme compressor systems.

1 Year Warranty

On Light Duty and Standard Duty Ride-Rite compressor kits.

Firestone warrants its products against defects in workmanship or material for the above.

What this warranty does not cover

Damage from accidents, corrosion, improper installation, incorrect applications, overloading, and custom applications that are not specified under the OEM cross references. This warranty does not cover loss of freight, loss of profit, equipment, or personal downtime.

You can view the full details of Firestone’s warranty here.

How to get service

If you purchased your air springs in the U.S. or Canada and believe you have a part with a warrantable defect, call Firestone Customer Service at 1-800-888-0650 (option 1 for Ride-Rite, option 1 again, then option 4 for warranty). Representatives are available from 7:30 a.m. to 4:30 p.m. (EST) Monday – Friday.

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