Dorman 603-039 Dual Coolant and Windshield Washer Fluid Reservoir

The Dorman 603-039 is a direct-replacement dual-function reservoir that combines both coolant overflow and windshield washer fluid storage in a single integrated unit. This space-saving design is engineered to restore proper fluid containment and system function on specific vehicle applications where the factory installed a combined reservoir.

Key Features:

• Dual-chamber design with separate compartments for coolant overflow and washer fluid
• Direct-fit replacement for original equipment on specific vehicles
• Durable plastic construction engineered to withstand temperature extremes and fluid exposure
• Includes necessary mounting provisions for secure installation
• Pre-marked fill level indicators for both coolant and washer fluid
• Helps restore proper cooling system and windshield washer operation

This reservoir is designed as a cost-effective alternative to expensive dealer parts, providing reliable performance and proper fit. Dorman engineering ensures this replacement meets or exceeds OE function while simplifying the repair process.