Dorman 603-326 Engine Coolant Reservoir - Front

Overview of the Dorman 603-326 Engine Coolant Reservoir

The Dorman 603-326 engine coolant reservoir is designed specifically for Toyota Highlander models, providing a reliable replacement for your vehicle's cooling system. Made from durable plastic, this white coolant reservoir includes a flip top cap and is engineered to meet the cooling needs of your engine.

• Constructed from durable plastic material for long-lasting use
• White color for easy fluid level monitoring
• 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 Highlander cooling systems
• Package contains one coolant reservoir and one cap

Detailed Product Description

The Dorman 603-326 engine coolant reservoir is a direct replacement part designed to fit Toyota Highlander vehicles. Its plastic construction ensures resistance to corrosion and heat, maintaining the integrity of your cooling system. The white reservoir allows for quick visual checks of coolant levels, helping to prevent overheating issues. This reservoir features a flip top cap that is included in the package, providing a secure closure to prevent coolant leaks. The part is non-pressurized and includes one mounting hole for installation; however, mounting hardware and brackets are not included and may need to be reused from the original part.

Common Applications and Problem Resolution

• Replaces cracked or leaking coolant reservoirs in Toyota Highlander models
• Prevents coolant loss that can lead to engine overheating
• Addresses coolant contamination caused by damaged or missing caps
• Restores proper coolant level monitoring with a clear white reservoir
• Eliminates coolant system pressure issues related to faulty reservoirs

Installation Notes and Tips

Installation of the Dorman 603-326 engine coolant reservoir requires removal of the old reservoir and transfer or replacement of mounting hardware. Since mounting brackets and hardware are not included, ensure you have the necessary components from the original reservoir or source compatible replacements. The single mounting hole simplifies alignment, but care should be taken to secure the reservoir firmly to avoid vibrations. The included flip top cap should be properly seated to maintain a secure seal and prevent coolant leaks.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM specifications, ensuring compatibility and durability for Toyota Highlander vehicles. The 603-326 engine coolant reservoir undergoes quality control testing to verify material integrity and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman's official warranty policy for complete information.