Dorman 603-239 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir 603-239

The Dorman 603-239 engine coolant reservoir is designed to maintain proper coolant levels and pressure in your vehicle's cooling system. This clear plastic reservoir is compatible with Chevrolet Express 2500, Express 3500, GMC Savana 2500, and Savana 3500 models, providing reliable performance and durability.

• Constructed from durable clear plastic for easy coolant level monitoring
• Measures 381.6 mm in length and 225.4 mm in height for precise fitment
• Includes a spring loaded twist cap rated for 15 psi maximum pressure
• Pressurized reservoir design to maintain optimal cooling system pressure
• Equipped with three mounting holes for secure installation
• Cap included with the reservoir for a complete replacement

Detailed Product Description

The Dorman 603-239 engine coolant reservoir is engineered to meet the specifications required by Chevrolet and GMC full-size vans, including the Express 2500, Express 3500, Savana 2500, and Savana 3500. Made from clear plastic, this reservoir allows for quick visual inspection of coolant levels without removing the cap. The spring loaded twist cap is designed to maintain system pressure up to 15 psi, which helps prevent coolant loss and overheating. With three mounting holes, the reservoir can be securely attached to the vehicle, ensuring stability during operation. This part comes complete with the cap, eliminating the need for additional purchases.

Common Applications and Problem Resolution

• Replacement for cracked or leaking coolant reservoirs
• Restores proper coolant pressure to prevent engine overheating
• Solves coolant loss due to faulty or missing reservoir caps
• Addresses coolant contamination by providing a sealed system
• Improves coolant level visibility for timely maintenance checks

Installation Notes and Tips

When installing the Dorman 603-239 coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. Align the reservoir using the three mounting holes and secure it firmly in place. The included spring loaded twist cap should be tightened to maintain the 15 psi pressure rating. Check for any leaks after installation and refill the cooling system with the appropriate coolant mixture as specified by the vehicle manufacturer.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The 603-239 engine coolant reservoir undergoes rigorous quality control to ensure durability and performance. Please refer to Dorman's warranty policy for specific coverage details.