Dorman 603-536 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir for BMW 5 Series

The Dorman 603-536 engine coolant reservoir is designed specifically for BMW 525i, 528i, and 530i models. This black plastic coolant reservoir includes a spring loaded twist cap and mounting brackets, providing a reliable solution for your vehicle's cooling system needs.

• Durable black plastic construction
• Includes spring loaded twist cap rated for 30 psi maximum pressure
• Pressurized reservoir design for optimal coolant containment
• Comes with mounting brackets; mounting hardware not included
• Single mounting hole for secure installation
• Package contains one coolant reservoir and one cap

Detailed Product Description

The Dorman 603-536 engine coolant reservoir is engineered to meet the specifications of BMW 525i, 528i, and 530i vehicles. Made from durable plastic, this reservoir is designed to withstand the pressures of a pressurized cooling system, with a cap that supports up to 30 psi. The included spring loaded twist cap ensures a secure seal to maintain system pressure and prevent coolant loss. The reservoir features one mounting hole and comes with mounting brackets for proper fitment, although mounting hardware is not included. Its black color matches OEM appearance, maintaining the original look under the hood.

Common Applications and Problem Resolution

• Replacement for cracked or leaking coolant reservoirs
• Solves coolant overflow or loss issues due to faulty reservoir caps
• Addresses pressure-related cooling system failures
• Prevents engine overheating caused by coolant containment failure
• Restores proper coolant level monitoring and system integrity

Installation Notes and Tips

When installing the Dorman 603-536 coolant reservoir on BMW 525i, 528i, or 530i models, ensure the mounting brackets are securely fastened using appropriate hardware (not included). Verify the spring loaded twist cap is properly seated to maintain system pressure. It is recommended to inspect hoses and connections for wear or damage during installation. Always allow the engine to cool before removing the old reservoir to avoid injury from hot coolant.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-536 engine coolant reservoir undergoes rigorous quality control to ensure durability and performance. This product includes a cap and mounting brackets to facilitate installation. Please refer to Dorman's warranty policy for specific coverage details.