I ordered the air springs on Sunday evening and they were delivered Tuesday morning. Can't beat it! They look like the perfect OEM match. The hardest part of the installation is lifting the frame and installing the safety supports/blocks. Air springs are attached to the frame with a twist lock. The air intake is a push-lock quick connector. Use a tool to press the ring on the air connector (6mm wrench) and pull out the hose. Deflate the air bag and slide the base off the axle alignment pin, unscrew the air spring. Repeat for the other side (I replaced both) Install new springs. Restoring communications between airlines. Slowly lower the loader making sure the bottom of the spring is centered on the axle. I actually had to run the H2 to reset some sensors and start the supercharger. The wells don't fill up on a simple start? Hope the pictures help. I tried to insert a video showing the position of the frame. A good product. The truck is back and blowing up. Much luck