Dorman 603-098 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir for Audi A4 and A6 Models

The Dorman 603-098 engine coolant reservoir is designed to maintain optimal cooling system performance for Audi A4, A4 Quattro, A6, and A6 Quattro vehicles. Constructed from durable plastic, this reservoir ensures proper coolant storage and pressure regulation to help prevent engine overheating.

• Made from high-quality plastic for durability and corrosion resistance
• Dimensions: 263 mm length and 150 mm height for precise fitment
• Includes a spring loaded twist cap rated for 20 psi maximum pressure
• Pressurized reservoir design to maintain system integrity
• Comes with 1 coolant reservoir and 1 cap; mounting hardware not included
• Features 2 mounting holes for secure installation

Product Details and Specifications

The Dorman 603-098 engine coolant reservoir is engineered to meet the specifications required by Audi A4 and A6 series vehicles, including Quattro models. Its white plastic construction resists heat and chemical exposure common in engine compartments. The reservoir is pressurized and equipped with a spring loaded twist cap that maintains a maximum pressure rating of 20 psi, ensuring the cooling system operates within safe limits. With two mounting holes, the reservoir can be securely attached, although mounting brackets and hardware are not included. This part is designed for direct replacement, providing a reliable solution for coolant containment and pressure management.

Compatible Vehicles and Common Applications

• Compatible with Audi A4 and A4 Quattro models
• Compatible with Audi A6 and A6 Quattro models
• Used to replace damaged or leaking coolant reservoirs
• Helps resolve coolant overflow and pressure loss issues
• Prevents engine overheating caused by coolant system failure

Installation Notes and Tips

When installing the Dorman 603-098 coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. Verify the reservoir orientation matches the original part and secure it using the two mounting holes. Since mounting hardware is not included, reuse existing brackets or acquire compatible hardware separately. Confirm the spring loaded twist cap is properly seated to maintain system pressure. After installation, check for leaks and proper coolant levels before operating the vehicle.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-098 engine coolant reservoir undergoes quality inspections to ensure durability and performance. This product includes a cap and is designed for pressurized cooling systems, supporting reliable operation in Audi A4 and A6 vehicles. Warranty coverage details can be obtained from the manufacturer or authorized distributors.