Dorman 603-109 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir for Chevrolet, Oldsmobile, and Pontiac

The Dorman 603-109 engine coolant reservoir is designed to maintain proper coolant levels and pressure in your vehicle's cooling system. Compatible with Chevrolet Alero, Cavalier, Malibu, SSR, Oldsmobile Alero, Cutlass, and Pontiac Grand Am, Classic, and Sunfire models, this reservoir ensures efficient engine temperature regulation.

• Durable plastic construction for long-lasting performance
• Dimensions: 340mm length and 86mm height for precise fitment
• Includes mounting brackets and two mounting holes for secure installation
• Comes with a spring loaded twist cap rated for 15 psi pressure
• Pressurized reservoir design to maintain optimal coolant system pressure
• Cap included for a complete replacement solution

Detailed Product Description

The Dorman 603-109 engine coolant reservoir is crafted from sturdy plastic material, providing resistance to heat and corrosion commonly found in engine compartments. Measuring 340mm in length and 86mm in height, it is engineered to fit specific Chevrolet, Oldsmobile, and Pontiac models, including the Alero, Cavalier, Classic, Cutlass, Grand Am, Malibu, SSR, and Sunfire. This reservoir features two mounting holes and includes mounting brackets to ensure a secure and stable installation. The spring loaded twist cap is designed to maintain a maximum pressure rating of 15 psi, supporting the pressurized cooling system to prevent overheating and coolant loss.

Common Applications and Issues Addressed

• Replacement for cracked or leaking coolant reservoirs
• Restores proper coolant level monitoring and containment
• Prevents engine overheating due to coolant loss
• Eliminates coolant contamination from damaged or faulty reservoirs
• Ensures correct pressure maintenance within the cooling system

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid injury from hot coolant. Remove the old reservoir carefully, noting the location of mounting points and hose connections. The Dorman 603-109 includes mounting brackets and two mounting holes for straightforward replacement. Secure the reservoir firmly and attach the spring loaded twist cap to maintain system pressure. Check for leaks after installation and refill the coolant to the recommended level for your vehicle.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, ensuring reliable fit and function. The 603-109 engine coolant reservoir undergoes quality checks to provide durability and performance consistent with factory standards. Please refer to Dorman's warranty policy for specific coverage details.