Fitment (Fits for most brand trucks) For Silverado/Sierra 1500 For Trail Boss/Sierra AT4 For Dodge/Ram 1500/2500/3500 For Ford F-150/F-250/F-350/F-450 2 & 4WD For Ford Super Duty For Chevrolet Silverado HD and GMC Sierra HD Compatible for most of Truck,Van, SUV, etc *Please confirm whether the air spring bag parameters below(especially height, diameter, bolt specifications) are consistent with ours before purchasing. Item Specifications: Placement on Vehicle: Left,Right,Front,Rear Suspension clip: 2 pieces Design height: 211 mm Min height: 71mm Max height: 318mm Working stroke: 247mm Single air port size: Design height Install hole size：3/8-16UNC Top plate diameter: 139 mm Air spring bag body diameter: 181 mm Air spring bag capacity: 2600LBS per one Condition: Brand New Features: 1. Air Tightness testing 2. 24 hours air tightness test ≤0. 02MPa 3. Anti-corrosion and provide a more consistent wear surface 4. Built to strict quality control standards 5. Sturdy & Durable Material 6. Designed for Comfort Suspension 7. Easy to install 8. Gives the driver more control of ride 9. Good heat dissipation 10. It has a high compressive strength and good sound insulation to ensure our driving comfort and safety 11. Test more than 3 million times 【Applications】 Universal air suspension kit for most of Truck,Van, SUV, etc. For Silverado/Sierra 1500; For Trail Boss/Sierra AT4; For Dodge/Ram 1500/2500/3500; For Ford F-150/F-250/F-350/F-450 2 & 4WD. Please confirm whether the air spring bag parameters below(especially height, diameter, bolt specifications) are consistent with ours before purchasing 【Benefits of Air Spring】 Fully adjustable air springs, working stroke up to 247mm, provides a safe and comfortable ride and level your vehicle 【Easy Install】Replaces the air springs in most air suspension bag kits for truck, van, SUV,etc. Easily install and replace your vehicle's standard rear coil springs. 【Load Leveling Capacity】Up to 2600 pounds per one, easy for towing or hauling a heavy load 【Specification Size】 Single air port size: 1/2-14NPT, Install hole size: 3/8-16UNC, Top plate diameter: 139 mm, Air spring bag body diameter: 181 mm