Dorman 603-009 Engine Coolant Reservoir

Reliable Engine Coolant Reservoir for Chevrolet and GMC Trucks

The Dorman 603-009 engine coolant reservoir is designed to maintain optimal cooling system performance for heavy-duty Chevrolet and GMC trucks. Engineered with durable plastic and a pressurized cap, this reservoir supports efficient coolant management in demanding conditions.

Key Features of the Dorman 603-009 Coolant Reservoir

• Constructed from durable white plastic for corrosion resistance
• Pressurized coolant cap rated up to 20 psi to maintain system pressure
• Includes a level sensor for accurate coolant monitoring
• Capacity of 2.0 liters to accommodate cooling system needs
• Designed with one mounting hole and an irregular shape for precise fitment
• Cap and reservoir included in the package

Detailed Product Description

The Dorman 603-009 engine coolant reservoir is crafted from high-quality plastic, providing a lightweight yet sturdy solution for coolant storage. Its white color allows for easy visual inspection of coolant levels. The reservoir features a pressurized cap capable of handling up to 20 psi, ensuring the cooling system maintains proper pressure to prevent overheating. Equipped with a built-in level sensor, this reservoir enables accurate monitoring of coolant levels, helping to avoid engine damage due to low coolant. The irregular shape and single mounting hole are designed to fit specific engine compartments, ensuring compatibility and secure installation.

Compatible Vehicles and Common Applications

• Chevrolet Silverado 2500 HD and 3500 HD models
• GMC Sierra 2500 HD and 3500 HD models
• Replacement for worn or cracked coolant reservoirs
• Solves coolant leakage and pressure loss issues
• Prevents engine overheating caused by coolant system failure

Installation Notes and Tips

Installation of the Dorman 603-009 reservoir requires removal of the old reservoir and careful alignment of the mounting hole. Since mounting hardware is not included, reuse existing brackets and fasteners or acquire compatible hardware separately. Ensure the pressurized cap is securely tightened to maintain system pressure. Verify the level sensor connection is properly attached to the vehicle’s wiring harness for accurate coolant level readings.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 603-009 engine coolant reservoir undergoes quality checks to ensure fitment and function. Please refer to Dorman’s warranty policy for specific coverage details.