Dorman 603-703 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir for Audi and Volkswagen Models

The Dorman 603-703 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your vehicle's cooling system. Engineered for select Audi and Volkswagen models, this reservoir ensures consistent performance and durability.

• Constructed from durable white plastic for long-lasting use
• Dimensions: 267.5 mm length and 113 mm height for precise fitment
• Includes mounting brackets and a spring-loaded twist cap for secure installation
• Pressurized design with included cap to maintain proper coolant system pressure
• Features three mounting holes for stable attachment

Product Details and Specifications

The Dorman 603-703 engine coolant reservoir is made from high-quality plastic, providing resistance to heat and corrosion commonly found in engine compartments. Its white color allows for easy coolant level inspection. The reservoir measures 267.5 mm in length and 113 mm in height, designed specifically to fit Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, Passat, RS6, and S4 models. This part comes with mounting brackets and a spring-loaded twist cap that is included in the package, ensuring a pressurized seal to maintain the cooling system's integrity. The reservoir features three mounting holes for secure and stable installation without the need for additional hardware.

Compatible Vehicles and Applications

This engine coolant reservoir is compatible with the following vehicles:

• Audi A4 and A4 Quattro
• Audi A6 and A6 Quattro
• Audi Allroad Quattro
• Volkswagen Passat
• Volkswagen RS6
• Audi S4

Common Issues Addressed by This Coolant Reservoir

• Coolant leaks due to cracked or damaged reservoirs
• Overheating caused by insufficient coolant levels
• Pressure loss in the cooling system affecting engine performance
• Faulty or missing reservoir caps leading to coolant evaporation
• Improper fitment causing coolant system malfunctions

Installation Notes and Tips

Installation of the Dorman 603-703 engine coolant reservoir requires no additional mounting hardware as brackets are included. Ensure the old reservoir is fully drained and removed carefully to avoid coolant spills. Align the reservoir using the three mounting holes and secure it with the provided brackets. Confirm the spring-loaded twist cap is properly seated to maintain system pressure. It is recommended to inspect hoses and clamps during installation for any signs of wear or damage.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The 603-703 engine coolant reservoir undergoes rigorous quality control to provide a precise fit and function. Warranty coverage details can be obtained from the product documentation or manufacturer directly.