Dorman 603-426 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir for Toyota Avalon

The Dorman 603-426 engine coolant reservoir is designed specifically for Toyota Avalon models, providing a reliable replacement for your vehicle's cooling system. Made from durable plastic, this reservoir ensures proper coolant storage and helps maintain optimal engine temperature.

• Constructed from sturdy plastic material for durability
• Dimensions: 127 mm length and 145 mm height for precise fitment
• White color for easy coolant level visibility
• Includes one flip-top cap for secure sealing
• Comes with one mounting hole; mounting hardware and brackets not included
• Non-pressurized design suitable for Toyota Avalon cooling systems
• Package contains one coolant reservoir and one cap

Detailed Product Description

The Dorman 603-426 engine coolant reservoir is engineered to match the specifications required for Toyota Avalon vehicles. Its plastic construction offers resistance to corrosion and heat, ensuring long-lasting performance. The reservoir measures 127 mm in length and 145 mm in height, providing an exact fit for the designated mounting location. The white color allows for quick visual checks of coolant levels without removing the cap. This reservoir features a flip-top cap that is included in the package, facilitating easy access for coolant refills and maintenance. It is designed as a non-pressurized component, compatible with the cooling system requirements of the Toyota Avalon. Note that mounting hardware and brackets are not included, and the reservoir has one mounting hole for installation.

Common Applications and Issues Addressed

• Replacement of cracked or leaking coolant reservoirs in Toyota Avalon models
• Resolving coolant overflow or low coolant level warnings
• Preventing engine overheating caused by coolant loss
• Restoring proper coolant containment after damage or wear
• Maintaining cooling system integrity for consistent engine performance

Installation Notes and Tips

When installing the Dorman 603-426 coolant reservoir on your Toyota Avalon, ensure the mounting hole aligns correctly with the vehicle’s frame. Since mounting hardware and brackets are not included, reuse existing components or acquire compatible hardware separately. Carefully attach the flip-top cap to prevent leaks and verify that the reservoir is securely fastened to avoid movement during vehicle operation. Always check coolant levels after installation and refill as necessary to maintain proper engine cooling.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance for your Toyota Avalon. The 603-426 engine coolant reservoir undergoes quality inspections to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to the product documentation for exact warranty terms.