Dorman 603-142 Coolant Recovery Tank Reservoir (2007.5-2010 6.6L Duramax)

The Dorman 603-142 Coolant Reservoir is a direct‑fit engine coolant reservoir designed to replace a faulty original expansion tank. It’s made from durable plastic engineered to match the fit and function of the factory part, helping maintain proper coolant overflow control and heat management in the cooling system. This reservoir includes the cap and installs without special tools for reliable, leak‑free performance. Features: Maintains Factory Fit & Function Manufactured From High-Quality Materials Specifications: Cap Included: Yes Cap Maximum Pressure Rating: 20 PSI Cap Type: Spring Loaded Twist Color: Black/White Material: Plastic Mounting Brackets Included: No Mounting Hardware Included: No Mounting Hole Quantity: 1 Package Contents: 1 Coolant Reservoir; 1 Cap Pressurized: Yes