Our air suspension springs are made from high-quality materials for increased durability and a longer service life. This direct replacement part prevents a sagging suspension and damage to other suspension and undercarriage components. Product Features:Direct replacement for a proper fit every timePrecisely engineered to absorb shock and vibration from the roadPrevents sagging, an uneven suspension and the air compressor from running excessivelyThis part has undergone lab, durability and vehicle try-on testing for conformance to product standards and quality