Firestone Coil-Rite: 4155 Rear Kit






Engineered and designed for Saturns, Toyotas, Buicks, and Chevrolets with coil spring suspensions. Install Coil-Rite air springs on your SUV for better road handling.

Available To Purchase Online
Where To Buy

Details & Benefits

  • Designed to work in temperatures between -40˚F (-40˚C) and 180˚F (82˚C)
  • Easily control air pressure in the air springs for varying loads and conditions
  • Spring performance can be altered as easily as inflating a tire
  • Made of durable, elastic polyurethane
  • Fill kit

    fill kit


  • load capacity

    load capacity


  • installation


    No Drill

  • in-bed hitch


    Not Compatible

  • min. air pressure

    minimum air pressure

    5 PSI

  • max air pressure

    maximum air pressure

    35 PSI

  • install time

    install time

    1 HOUR(s)

Air Accessory Systems

2158 Single Path Analog Standard Duty 2497
2178 Dual Path Ananlog Standard Duty 2497
2097 Single Path Analog Heavy Duty 2497
2219 Dual Path Analog Heavy Duty 2497
2543 Single Path Analog Extreme Duty With Tank 2530
2549 Dual Path Analog Extreme Duty With Tank 2530
2610 Single Path Wireless (App Only) Standard Duty 2640
2626 Single Path Wireless (App Only) Heavy Duty 2640
2629 Dual Path Wireless (App Only) Standard Duty 2640
2630 Dual Path Wireless (App Only) Heavy Duty 2640
2631 Dual Path Wireless (App Only) Extreme Duty With Tank 2641
2632 Dual Path Wireless (Remote & App ) Standard Duty 2640
2633 Dual Path Wireless (Remote & App ) Heavy Duty 2640
2634 Dual Path Wireless (Remote & App ) Extreme Duty With Tank 2641
2638 Single Path Wireless (Remote & App) Standard Duty 2640
2639 Single Path Wireless (Remote & App ) Heavy Duty 2640

Vehicles Compatible with 4155


Terraza (2005-2007)

2005 Terraza
2006 Terraza
2007 Terraza

Uplander (2005-2009)

2005 Uplander
2006 Uplander
2007 Uplander
2008 Uplander
2009 Uplander

Relay (2005-2007)

2005 Relay
2006 Relay
2007 Relay

Sienna (2004-2023)

Exception Warning Not AWD
2004 Sienna
2005 Sienna
2006 Sienna
2007 Sienna
2008 Sienna
2009 Sienna
2010 Sienna
2011 Sienna
2012 Sienna
2013 Sienna
2014 Sienna
2015 Sienna
2016 Sienna
2017 Sienna
2018 Sienna
2019 Sienna
2020 Sienna
2021 Sienna
2022 Sienna
2023 Sienna

What's Included

Everything is included for a quick, easy installation.

  • Air springs
  • Hardware
  • Air line and separate valves for manual inflation, the same as you would use for inflating a tire

Optional air accessories are available for all applications. 

Additional Info

Every load and road is different. That's one reason we designed Coil-Rite air springs. Coil-Rite balances your Saturn, Toyota, Buick, or Chevrolet to encourage better handling and braking, even when handling poor road conditions and heavy loads. As a result, Coil-Rite SUV air springs also help limit tire wear and keep headlight beams even.

Most SUVs with coil spring suspensions can take advantage of Coil-Rite air helper springs. They fit within the current coil springs to create a variable spring rate. Variable spring rates lead to a higher spring rate in loaded conditions and a slower spring rate in unloaded conditions. What does that lead to? A better ride for all those inside your vehicle, and more responsive control as you add miles to the odometer.

Is Firestone Coil-Rite installation pretty straightforward? It sure is. Your air spring kit contains all of the pieces necessary for a speedy, trouble-free installation. Install times average less than two hours, and a majority of Firestone Coil-Rite SUV kits do not require drilling. Coil-Rite air springs are crafted out of durable, elastic polyurethane and connect to your Saturn, Toyota, Buick, or Chevrolet's current spring seats. Air tanks, air compressors, switches, and gauges can be bought separately. The right air accessories make it easier for you to inflate or deflate your air springs from the comfort of the driver's seat.

Once installed, Coil-Rite air bags adjust easily with individual inflation valves so you can maintain a centered load and ride comfort. A balanced load diminishes body roll to improve vehicle stability. Coil-Rite air springs also help prevent bottoming out by cushioning the interaction between your SUV's axles and frame and absorbing road shock.

With Coil-Rite air springs, changing seasons won't block you from hauling what you need to haul. Coil-Rite air helper springs are designed to continue performing in temperatures between -40F (-40C) and 180F (82C). Head north or south— drive your Saturn, Toyota, Buick, or Chevrolet in any direction, any time.

Firestone Coil-Rite air springs support 500 - 2,100 lbs. per set but do not change your SUV's overall weight-carrying capacity. Review your owner's manual for vehicle-specific recommendations before hauling or towing any size load.

Visit your closest Coil-Rite retailer and get your Saturn, Toyota, Buick, or Chevrolet Firestone Coil-Rite air spring kit.