Firestone · New
Firestone Coil-Rite Air Helper Spring Kit Rear (Multiple Fitments) (W237604105)
MPN 4105 · Store SKU fir4105
Supplier stock checked 11/7/2026, 1:03:18 PM UTC. Adding a part does not reserve it.
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Product details
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). 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 180 °F (82 °C) and -40 °F (-40 °C). Coil-Rite® Air Helper Spring Kit; Rear; Incl. Air Helper Springs; Supports; Hardware; Air Line; And Inflation Valves; No Drilling Required; Coil-Rite® Air Helper Spring Kit Coil-Rite Air Helper Springs
Manufacturer fitment & guides
Check 4105 against the manufacturer’s application information below.
