Used on most of American Truck/Trailer. Replaces: VS227, 171.H184, 53321-Q120, 90054007, KD2204, 50433001, 60826000, E11494, HTSVS227 Fitment: For All Hendrickson Suspension Applications, All 1980 's Through Current Neway Trailer Air Suspensions, Most Other Trailer Air Suspensions. Installation Recommend: When Not Exceeding The Maximum Movement Angle of 45 degrees, The Length Ratio L / A Should Be less than equal 1.2. The Length L Should Be Between 175 and 295 mm. If A Shorter Yaw is Used, The Height Valve Generate A Large Air Consumption. Product Name: Air Height Leveling Valve Type: Truck Leveling Valve Inlet Port: NPT1/4 Max Working Pressure: 1.2Mpa Mounting Hole Centre: 38mm Mounting Thread: 1/4-20UNC Manufacturer Part Number: 50433001,VS-227 Other Part Number: 50433001, 60826000, E11494, HTSVS227 Interchange Part Number: 53321-Q120,90054007, KD2204 colour:As shown Material:aluminum Package Contents: 3 x Air Height Leveling Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.