Firestone fir4150 - Coil-Rite Air Helper Spring Kit Rear

If you're looking for a smoother ride for your vehicle that has a coil spring suspension, Firestone Coil-Rite air helper springs are what you need. Designed to fit inside existing coil springs to create a variable spring rate, Coil-Rite will level your vehicle and assist with more effective braking and handling, even under heavy loading and adverse road conditions.Coil-Rite enables you to control the air pressure in the air helper springs so you can make adjustments for varying loads and road conditions. Spring performance can be altered as easily as inflating a tire.Firestone Coil-Rite air helper springs are made of durable, elastic polyurethane, providing years of comfort and stability to your vehicle. The air springs will support 500-1000 lbs. per set (not to exceed vehicle's GVWR). Coil-Rite Air Helper Springs are designed to work in temperatures between 180deg F (82deg C) and -40deg F (-40deg C). Coil-Rite® Air Helper Spring Kit; Rear; Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required;

• Keep Headlights Aimed On The Road
• Improve Braking Effectiveness
• Improve Steering And Balance
• Increase Vehicle Stability
• Maintain A Level Vehicle
• Prevent Bottoming Out
• Reduce Tire Wear

The Firestone Coil-Rite Air Helper Spring Kit is designed for vehicles with rear coil spring suspension. The air helper springs install inside the existing coil springs to create a variable spring rate, helping maintain a level vehicle and supporting improved braking, handling, steering, and stability under changing loads and road conditions.

Air pressure can be adjusted to suit varying loads and driving conditions, allowing spring performance to be changed similarly to inflating a tire. The springs are made from durable, elastic polyurethane and support 500–1,000 pounds per set, without exceeding the vehicle's gross vehicle weight rating. The kit is designed to operate between -40°F and 180°F.

Key Features & Performance Benefits

• Variable spring rate: Adjust air pressure to help accommodate changing loads and road conditions.
• Vehicle leveling: Helps maintain a level vehicle and keep headlights aimed on the road.
• Handling support: Helps improve braking effectiveness, steering, balance, and vehicle stability.
• Ride protection: Helps prevent bottoming out and reduce tire wear.

Key Product Specifications & Technical Data

• Brand: Firestone
• Product line: Coil-Rite
• Part number: fir4150
• Application: Rear coil spring suspension
• Support capacity: 500–1,000 pounds per set
• Construction: Elastic polyurethane
• Operating temperature: -40°F to 180°F
• Installation: No drilling required

What's Included in the Box

The kit includes air helper springs, supports, hardware, air line, and inflation valves.

Fitment

Fitment data provided includes 2007, 2011, 2012, and 2013 Nissan Armada, and 2007 Infiniti QX56. The supplied product name also references 2004–2005 Nissan Pathfinder and 2006–2017 Nissan Armada; verify vehicle-specific fitment before purchase.

Fitments:
2004 Nissan Pathfinder LE
2004 Nissan Pathfinder SE
2004 Nissan Pathfinder Armada LE
2004 Nissan Pathfinder Armada SE
2005 Infiniti QX56 Base
2005 Nissan Armada LE
2005 Nissan Armada SE
2005 Nissan Armada SE Off-Road
2005 Nissan Pathfinder LE
2005 Nissan Pathfinder SE
2005 Nissan Pathfinder SE Off-Road
2005 Nissan Pathfinder XE
2006 Infiniti QX56 Base
2006 Nissan Armada LE
2006 Nissan Armada SE
2006 Nissan Armada SE Off-Road
2007 Infiniti QX56 Base
2007 Nissan Armada LE
2007 Nissan Armada SE
2008 Infiniti QX56 Base
2008 Nissan Armada LE
2008 Nissan Armada SE
2009 Infiniti QX56 Base
2009 Nissan Armada LE
2009 Nissan Armada SE
2010 Nissan Armada Platinum
2010 Nissan Armada SE
2010 Nissan Armada Titanium
2011 Nissan Armada Platinum
2011 Nissan Armada SL
2011 Nissan Armada SV
2012 Nissan Armada Platinum
2012 Nissan Armada SL
2012 Nissan Armada SV
2013 Nissan Armada Platinum
2013 Nissan Armada SL
2013 Nissan Armada SV
2014 Nissan Armada Platinum
2014 Nissan Armada SL
2014 Nissan Armada SV
2015 Nissan Armada Platinum
2015 Nissan Armada SL
2015 Nissan Armada SV
2017 Nissan Armada Platinum
2017 Nissan Armada SL
2017 Nissan Armada SV
2018 Nissan Armada Platinum
2018 Nissan Armada Platinum Reserve
2018 Nissan Armada SL
2018 Nissan Armada SV
2019 Nissan Armada Platinum
2019 Nissan Armada Platinum Reserve
2019 Nissan Armada SL
2019 Nissan Armada SV
2020 Nissan Armada Platinum
2020 Nissan Armada Platinum Reserve
2020 Nissan Armada SL
2020 Nissan Armada SV
2021 Nissan Armada Midnight Edition
2021 Nissan Armada Platinum
2021 Nissan Armada S
2021 Nissan Armada SL
2021 Nissan Armada SV
2022 Nissan Armada Midnight Edition
2022 Nissan Armada Platinum
2022 Nissan Armada S
2022 Nissan Armada SL
2022 Nissan Armada SV

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: N
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1