The Iveco Daily (III) 1999-2006 Suspension Air Ride Supply Solenoid Valve Block is responsible for distributing the air between the Air Suspension Compressor and the Air Struts or Air Spring Bags in your vehicle. When the O-Rings dry rot and there is an air leak or the electrical components go bad in your Air Suspension Valve Block, you will need to replace it. Having an Air Leak in your Valve Block can cause the Air Suspension Compressor to overwork and "Burn Out". Here at Miessler Automotive you will find many of the necessary parts and components to fix your The Iveco Daily (III) 1999-2006 Air Suspension System for less. Your satisfaction is our guarantee!