Dorman 603-538 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir for BMW 735i

The Dorman 603-538 engine coolant reservoir is designed specifically for BMW 735i models, providing a reliable solution for your vehicle's cooling system. Made from durable plastic with a black and white finish, this reservoir ensures proper coolant storage and pressure management.

• Constructed from high-quality plastic for durability
• Includes one coolant reservoir and one spring loaded twist cap
• Cap is pressurized with a maximum pressure rating of 30 psi
• Equipped with two mounting holes and included mounting brackets for secure installation
• Cap included with spring loaded twist design for effective sealing

Detailed Product Description

The Dorman 603-538 engine coolant reservoir is engineered to meet the specifications of BMW 735i vehicles. Its plastic construction offers resistance to heat and corrosion, essential for maintaining coolant integrity. The black and white color scheme allows for easy fluid level monitoring. This reservoir comes with a spring loaded twist cap that maintains system pressure up to 30 psi, helping to prevent coolant loss and overheating. Two mounting holes and included brackets ensure a secure fit within the engine bay, although mounting hardware is not included. This part number 603-538 is a direct replacement designed to restore proper coolant system function.

Common Applications and Problem Resolution

• Replaces cracked or leaking coolant reservoirs in BMW 735i
• Solves coolant overflow and loss issues
• Prevents engine overheating caused by coolant system failure
• Restores proper pressure regulation with included pressurized cap
• Addresses coolant contamination due to damaged reservoir

Installation Notes and Tips

Installation of the Dorman 603-538 reservoir requires removal of the old reservoir and careful alignment of the two mounting holes with the included brackets. Since mounting hardware is not included, ensure you have the appropriate bolts or screws on hand. The spring loaded twist cap should be securely tightened to maintain system pressure. It is recommended to inspect hoses and connections during installation to prevent leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 603-538 engine coolant reservoir undergoes quality checks to ensure durability and performance in BMW 735i vehicles. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts to cover defects in material and workmanship.