How do I insert the air tube to the air nozzle position? Step 1: Use a knife to cut the air hose flat at the opening.Step 2: Soak the air tube in hot water for 3 minutes or heat the air tube with a hot air blower for 3 minutes to soften it.Step 3: Insert the heated air tube into the nozzle of the airbag. WARNING: No heated air tube inserted into the air nozzle will fail to install. FITMENT: FOR 2009-2022 RAM 1500 PickupsFOR 2009-2022 RAM 1500 Classic Pickups REPLACEMENT OEM NUMBER: Airlift 60818HD EXCELLENT QUALITY Our air spring bags suspension kit are made of high density rubber, good air tightness and durability. Maximize air suspension load performance. EASY AND FAST INSTALLATION Replacing original parts directly usually finish within 2 hours or less. For safety and efficiency, professional installation is highly recommended. RELIABLE PERFORMANCE MILLISEC devoting to producing high value replacements. These rear air helper spring kit have been upgraded in air sealing and durability, and have excellent safe load-bearing capacity and stability. ABOUT MILLISEC Air springs, also known as air suspension systems or airbags, are components used in vehicles to provide a smoother ride and adjust the vehicle's height based on the load it carries. Instead of traditional coil or leaf springs, air springs utilize compressed air as the main source of support. We have twenty years of research and development experience and manufacturing experience, you don't need to worry about product quality.