Dorman 603-644 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir for Mercedes-Benz

The Dorman 603-644 engine coolant reservoir is designed specifically for select Mercedes-Benz models including the 300CE, 300E, 300TE, and E320. This replacement reservoir ensures proper coolant storage and pressure management to maintain optimal engine temperature.

• Constructed from durable white plastic for corrosion resistance
• Includes a spring loaded twist cap rated for 20 psi maximum pressure
• Pressurized reservoir design to support efficient cooling system operation
• Comes with mounting brackets but does not include mounting hardware
• Features two mounting holes for secure installation
• Package contains one coolant reservoir and one compatible cap

Detailed Product Description

The Dorman 603-644 engine coolant reservoir is engineered to meet the specifications required by Mercedes-Benz 300CE, 300E, 300TE, and E320 models. Made from high-quality plastic, this white reservoir resists heat and corrosion, ensuring long-term durability. The included spring loaded twist cap maintains system pressure up to 20 psi, which is critical for preventing coolant loss and overheating. The reservoir is pressurized to support the cooling system’s efficiency and comes with mounting brackets for a secure fit, although mounting hardware is not included. With two mounting holes, installation aligns with factory specifications for these Mercedes-Benz vehicles.

Common Applications and Problem Resolution

• Replaces cracked or leaking coolant reservoirs in Mercedes-Benz 300CE, 300E, 300TE, and E320
• Solves coolant overflow or loss due to damaged or faulty reservoirs
• Addresses pressure-related cooling system failures with a cap rated for 20 psi
• Prevents engine overheating caused by inadequate coolant containment
• Restores proper coolant level monitoring and system integrity

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old reservoir to avoid injury
• Verify the mounting brackets and holes align with your vehicle’s frame
• Use appropriate mounting hardware as it is not included with this part
• Check the cap seal for proper fit and pressure retention after installation
• Dispose of old coolant and reservoir according to local regulations

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-644 engine coolant reservoir undergoes rigorous quality control to ensure reliable performance in Mercedes-Benz 300CE, 300E, 300TE, and E320 models. Warranty coverage details can be obtained from the product documentation or manufacturer’s website.