Dorman 603-5502 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir Replacement

The Dorman 603-5502 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your vehicle's cooling system. Made from durable white plastic, this pressurized reservoir includes a spring loaded twist cap rated for up to 10 psi, ensuring proper system function and preventing overheating.

• Constructed from durable white plastic for corrosion resistance
• Includes a spring loaded twist cap with a 10 psi maximum pressure rating
• Pressurized design to maintain proper coolant system pressure
• Cap included for a complete replacement solution
• Mounting hardware and brackets not included

Product Details and Specifications

The Dorman 603-5502 engine coolant reservoir is engineered to meet or exceed OEM specifications for vehicles requiring a pressurized coolant expansion tank. Its white plastic construction resists heat and chemical damage, while the included spring loaded twist cap maintains system pressure up to 10 psi. This reservoir does not come with mounting hardware or brackets, so ensure compatibility with your vehicle’s existing mounting points. The part number 603-5502 is essential for identifying the correct replacement for your vehicle’s cooling system.

Compatible Vehicles and Common Applications

This engine coolant reservoir is compatible with various makes and models that require a pressurized coolant tank with a spring loaded twist cap. It is commonly used in vehicles where maintaining precise coolant pressure is critical to engine performance and longevity. When searching for a replacement, use the part number 603-5502 along with your vehicle’s make and model to confirm fitment.

• Helps resolve coolant leaks from cracked or damaged reservoirs
• Prevents engine overheating caused by coolant loss
• Maintains proper coolant pressure to avoid system failures
• Replaces faded or discolored reservoirs to improve system inspection
• Restores proper cap sealing to prevent coolant evaporation

Installation Notes and Tips

Before installation, verify that your vehicle’s mounting points are compatible with this reservoir, as mounting hardware and brackets are not included. Carefully drain the cooling system and relieve pressure before removing the old reservoir. Install the Dorman 603-5502 reservoir and securely tighten the included spring loaded twist cap to maintain system pressure. After installation, refill the cooling system with the appropriate coolant and check for leaks during operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet industry standards for durability and performance. The 603-5502 engine coolant reservoir undergoes quality checks to ensure it functions reliably under normal operating conditions. Please refer to Dorman’s warranty policy for specific coverage details related to this part.