Dorman 603-039 Washer Fluid Reservoir - Front

Dorman 603-039 Washer Fluid Reservoir

Dorman 603-039 is a replacement coolant/washer reservoir built from plastic to handle underhood heat and engine vibration. It is engineered to match the original fit and function for select Chevrolet Astro and GMC Safari applications with a combined coolant and washer fluid reservoir.

Key Features

• Plastic reservoir construction for underhood use
• White finish
• Mounting brackets included for installation support
• Cap included
• Non-pressurized design
• Engineered to match OE fit and function

Detailed Description

This Dorman washer fluid reservoir is a direct replacement for vehicles that use a combined coolant and washer fluid reservoir layout. The design follows the original mounting points and configuration, with two mounting holes and included brackets to help restore proper reservoir placement in the engine compartment. The reservoir measures 260 in length and 452 in height, and it includes cap coverage for the system. This part cross-references GM OE 12363310 for the same application. Fits 1995-2005 Chevrolet Astro, front, with liftgate wiper system or rear wiper and combined coolant and washer fluid reservoir. Fits 1995-2005 GMC Safari, front, with liftgate wiper system or rear wiper and combined coolant and washer fluid reservoir. Dorman 603-039 is a practical replacement when the original reservoir is cracked, leaking, or no longer holding fluid as intended.

Common Repair Uses

• Cracked or split reservoir housing
• Washer fluid leaks from the tank body or seams
• Broken mounting points or damaged brackets
• Loss of washer fluid storage capacity
• Replacement for a worn combined coolant and washer reservoir assembly

Installation Notes and Tips

Verify the vehicle uses a combined coolant and washer fluid reservoir before ordering. Confirm front-position fitment and match the liftgate wiper system or rear wiper configuration listed for your Chevrolet Astro or GMC Safari. Transfer any required system components during installation and inspect the mounting area for damage before securing the reservoir.

Quality Assurance

Dorman manufactures this reservoir from quality materials and builds it to withstand heat and vibration in the engine bay. The part is engineered to match original fit and function for the listed applications.