Firestone Coil-Rite Rear Air Helper Spring Kit for Select 1993-2026 Audi, Jeep, and Nissan (4118)

Fits select 1993-2026 Audi, Buick, Chevrolet, GMC, Infiniti, Jeep, Nissan, and Toyota vehicles.

The Firestone Coil-Rite Rear Air Helper Spring Kit is engineered to provide a smoother ride and improved load-leveling for vehicles equipped with coil spring suspensions. By installing directly inside your existing coil springs, these air springs create a variable spring rate that can be adjusted as easily as inflating a tire. This system effectively corrects vehicle sag under heavy loads, improves steering and braking response, and prevents bottoming out on adverse road surfaces.

Constructed from durable, elastic polyurethane, these air springs are built to withstand demanding environments while maintaining vehicle stability and reducing tire wear. Whether you are hauling gear or towing, the Coil-Rite system allows for precise air pressure control to match your specific loading needs.

• Supports 500–1,000 lbs. per set (do not exceed vehicle GVWR)
• Operating temperature range: -40°F (-40°C) to 180°F (82°C)
• Manufactured from high-strength polyurethane
• Improves headlight aiming and vehicle balance
• Installation hardware included
• Manufacturer Part Number: 4118