When it comes to your air and brake systems, not just any parts will do. Trust Haldex brake solutions for enhanced safety, environment, and vehicle dynamics. Haldex IR Height Control Valve - 90555105 inflates or exhausts air springs to maintain suspension ride height. It has a Non-time delay valve. The new EGP/IR platform is a direct replacement for the 90554241. All ports are 1/4 in. NPT.Products are warrantied to be free from defects under warranty terms and conditions. Specific warranties vary slightly from products installed on new vehicles to replacement parts installed at a later date.Haldex is a Sweden-based company that operates worldwide in 19 countries. Haldex develops and produces reliable and innovative solutions that improve safety, vehicle dynamics and environmental sustainability in the global commercial vehicle industry. They are one of the world-leading suppliers of brake and suspension solutions, and are developing new technology for electrical and autonomous vehicles. From air compressors and air dryers to valves and hose clamps, Haldex has everything you need to keep your brake and suspension systems at peak performance all year long. Invest in the best with Haldex.