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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Firestone
Firestone Coil-Rite Rear Air Helper Spring Kit for Select 2007-2018 Jeep & Toyota (4173)
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits select 2007-2018 Jeep Wrangler, Wrangler JK, and 2007-2009 Toyota FJ Cruiser.
The Firestone Coil-Rite Air Helper Spring Kit (MPN 4173) is engineered to enhance the performance and ride quality of vehicles equipped with rear coil spring suspensions. By installing these durable polyurethane air springs inside your existing factory coils, you create a variable spring rate that levels your vehicle during heavy loading or towing. This system allows for precise air pressure adjustments, enabling you to maintain stability, keep headlights properly aimed, and improve braking effectiveness across varying road conditions.
- Support Capacity: 500-1,000 lbs per set (do not exceed vehicle GVWR)
- Material: Durable, elastic polyurethane construction
- Operating Temperature: -40°F (-40°C) to 180°F (82°C)
- Key Benefits: Improves steering control, reduces tire wear, and prevents bottoming out
- Adjustability: Air pressure can be tuned to match specific load requirements
- Mounting: Designed to fit inside existing rear coil springs
- Manufacturer Part Number: 4173
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011 | Jeep | Wrangler | 70th Anniversary |
| 2016 | Jeep | Wrangler | 75th Anniversary |
| 2007-2017 | Jeep | Wrangler | Rubicon |
| 2007-2017 | Jeep | Wrangler | Sahara |
| 2010-2017 | Jeep | Wrangler | Sport |
| 2016 | Jeep | Wrangler | Sport S |
| 2011 | Jeep | Wrangler | Unlimited 70th Anniversary |
| 2016 | Jeep | Wrangler | Unlimited 75th Anniversary |
| 2007-2017 | Jeep | Wrangler | Unlimited Rubicon |
| 2007-2017 | Jeep | Wrangler | Unlimited Sahara |
| 2010-2017 | Jeep | Wrangler | Unlimited Sport |
| 2016 | Jeep | Wrangler | Unlimited Sport S |
| 2007-2010 | Jeep | Wrangler | Unlimited X |
| 2007-2010 | Jeep | Wrangler | X |
| 2018 | Jeep | Wrangler JK | Rubicon |
| 2018 | Jeep | Wrangler JK | Sahara |
| 2018 | Jeep | Wrangler JK | Sport |
| 2018 | Jeep | Wrangler JK | Sport S |
| 2018 | Jeep | Wrangler JK | Unlimited Rubicon |
| 2018 | Jeep | Wrangler JK | Unlimited Sahara |
| 2018 | Jeep | Wrangler JK | Unlimited Sport |
| 2018 | Jeep | Wrangler JK | Unlimited Sport S |
| 2007-2009 | Toyota | FJ Cruiser | Base |
| 2008 | Toyota | FJ Cruiser | Trail Teams Special Edition |
| 2007 | Toyota | FJ Cruiser | TRD Special Edition |
Choose your Location
-
Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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The Atlus Price Guarantee
If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
Firestone Coil-Rite Rear Air Helper Spring Kit for Select 2007-2018 Jeep & Toyota (4173)
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
Price Match
If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
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Fits select 2007-2018 Jeep Wrangler, Wrangler JK, and 2007-2009 Toyota FJ Cruiser.
The Firestone Coil-Rite Air Helper Spring Kit (MPN 4173) is engineered to enhance the performance and ride quality of vehicles equipped with rear coil spring suspensions. By installing these durable polyurethane air springs inside your existing factory coils, you create a variable spring rate that levels your vehicle during heavy loading or towing. This system allows for precise air pressure adjustments, enabling you to maintain stability, keep headlights properly aimed, and improve braking effectiveness across varying road conditions.
- Support Capacity: 500-1,000 lbs per set (do not exceed vehicle GVWR)
- Material: Durable, elastic polyurethane construction
- Operating Temperature: -40°F (-40°C) to 180°F (82°C)
- Key Benefits: Improves steering control, reduces tire wear, and prevents bottoming out
- Adjustability: Air pressure can be tuned to match specific load requirements
- Mounting: Designed to fit inside existing rear coil springs
- Manufacturer Part Number: 4173
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011 | Jeep | Wrangler | 70th Anniversary |
| 2016 | Jeep | Wrangler | 75th Anniversary |
| 2007-2017 | Jeep | Wrangler | Rubicon |
| 2007-2017 | Jeep | Wrangler | Sahara |
| 2010-2017 | Jeep | Wrangler | Sport |
| 2016 | Jeep | Wrangler | Sport S |
| 2011 | Jeep | Wrangler | Unlimited 70th Anniversary |
| 2016 | Jeep | Wrangler | Unlimited 75th Anniversary |
| 2007-2017 | Jeep | Wrangler | Unlimited Rubicon |
| 2007-2017 | Jeep | Wrangler | Unlimited Sahara |
| 2010-2017 | Jeep | Wrangler | Unlimited Sport |
| 2016 | Jeep | Wrangler | Unlimited Sport S |
| 2007-2010 | Jeep | Wrangler | Unlimited X |
| 2007-2010 | Jeep | Wrangler | X |
| 2018 | Jeep | Wrangler JK | Rubicon |
| 2018 | Jeep | Wrangler JK | Sahara |
| 2018 | Jeep | Wrangler JK | Sport |
| 2018 | Jeep | Wrangler JK | Sport S |
| 2018 | Jeep | Wrangler JK | Unlimited Rubicon |
| 2018 | Jeep | Wrangler JK | Unlimited Sahara |
| 2018 | Jeep | Wrangler JK | Unlimited Sport |
| 2018 | Jeep | Wrangler JK | Unlimited Sport S |
| 2007-2009 | Toyota | FJ Cruiser | Base |
| 2008 | Toyota | FJ Cruiser | Trail Teams Special Edition |
| 2007 | Toyota | FJ Cruiser | TRD Special Edition |
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We only sell authentic products from verified brand partners and retail partners globally.
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