The Ultimate Guide To Boku To Misaki Sensei Everything You Need To Know Firestone Coil Rite Replacement Air Helper Spring 5.5 x 7 CR SVC (W237606006). 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). Warranty Warranty 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 This Part Fits: Year Make Model Submodel 2011 Jeep Wrangler 70th Anniversary 2007 2014 Jeep Wrangler Sahara 2010 2014 Jeep Wrangler Sport 2011 Jeep Wrangler Unlimited 70th Anniversary 2007 2014 Jeep Wrangler Unlimited Sahara 2010 2014 Jeep Wrangler Unlimited Sport 2007 2010 Jeep Wrangler Unlimited X 2007 2010 Jeep Wrangler X 1990 1995 Toyota 4Runner SR5 2007 2009 Toyota FJ Cruiser Base 2008 Toyota FJ Cruiser Trail Teams Special Edition 2007 Toyota FJ Cruiser TRD Special Edition 1984 1989 Toyota Van Wagon Crg 1984 1989 Toyota Van Wagon DX 1984 1989 Toyota Van Wagon LE