Dorman 603-5131 Engine Coolant Reservoir

Reliable Engine Coolant Reservoir for Vehicle Cooling Systems

The Dorman 603-5131 engine coolant reservoir is designed to maintain optimal coolant levels and support your vehicle's cooling system. Made from durable plastic, this black reservoir features a pressurized design with a spring loaded twist cap rated for 10 psi, ensuring efficient coolant containment and system pressure management.

• Constructed from durable plastic material for long-lasting use
• Measures 11 inches in length and 13.5 inches in height with an irregular shape for precise fitment
• Includes a spring loaded twist cap with a maximum pressure rating of 10 psi
• Pressurized reservoir design to maintain proper cooling system pressure
• Equipped with 4 mounting holes and included mounting brackets for secure installation
• Comes with one coolant reservoir and one cap in the package
• Cap included; level sensor not included
• 5-liter coolant capacity suitable for various vehicle applications

The Dorman 603-5131 engine coolant reservoir is engineered to replace worn or damaged reservoirs in compatible vehicles, helping to prevent coolant loss and overheating. Its black plastic construction resists corrosion and heat, while the included spring loaded twist cap maintains system pressure up to 10 psi. The irregular shape and mounting bracket design allow for a secure fit in the engine bay, supporting reliable coolant flow and system performance.

Common Applications and Issues Addressed

• Prevents coolant leaks caused by cracked or damaged reservoirs
• Maintains proper coolant levels to avoid engine overheating
• Supports pressurized cooling systems to improve efficiency
• Replaces faulty or missing caps to ensure system pressure integrity
• Helps resolve coolant contamination from compromised reservoirs

Installation Notes and Tips

Before installation, verify compatibility with your vehicle's make and model to ensure proper fitment. The reservoir includes mounting brackets and four mounting holes for secure attachment. Use caution when removing the old reservoir to avoid coolant spills. The spring loaded twist cap should be tightened securely to maintain system pressure. Note that mounting hardware is not included and may need to be sourced separately.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-5131 engine coolant reservoir undergoes quality checks to ensure durability and performance under normal operating conditions. Warranty coverage details can be obtained from the product documentation or manufacturer directly.