Sinister Diesel Degas Bottle for 2003-2007 Ford 6.0L

The Sinister Diesel SDDEGAS60 Coolant Reservoir replaces the factory plastic degas bottle on 2003-2007 Powerstroke 6.0L trucks, upgrading a common failure point with a stronger, more reliable design. Made from 6061 aircraft-grade aluminum, it is TIG welded and pressure tested for maximum strength, holding up better under heat and pressure than factory plastic tanks. Aluminum also aids in heat dissipation, helping coolant temperatures remain more stable for improved engine performance and longevity. It features a built-in sight glass for quick and easy coolant level checks without removing the cap. This direct bolt-in replacement uses the factory cap and can be installed in less than 30 minutes with basic tools. Manufactured at Sinister Diesel's Sacramento facility, it undergoes careful cutting, forming, and welding for proper fitment, delivering consistent quality and performance. The tank is available in Sinister Gray or Sinister Blue finishes, adding corrosion resistance and a clean look under the hood. It improves durability, heat management, and overall cooling system reliability, making it ideal for daily driving and performance applications.