Dorman 603-191 Washer Fluid Reservoir - Front

Washer Fluid Reservoir for GM Vans

Dorman 603-191 is a replacement washer fluid reservoir for front applications on select Chevrolet Express and GMC Savana vans. It is built from clear plastic and includes a reservoir cap, making it a direct service part for restoring windshield washer fluid storage on the specified vehicles.

Key Features

• Clear plastic construction for easy fluid level visibility
• Replacement washer fluid reservoir for front-mounted applications
• Reservoir cap included
• Formed for specific vehicle fitment on Chevrolet Express and GMC Savana models
• Dorman part number 603-191

Detailed Description

This washer fluid reservoir is manufactured to handle underhood heat and engine vibration, then tested for fit and performance on the listed applications. It is a practical replacement for a cracked, leaking, or missing reservoir on Chevrolet Express 1500, Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 1500, GMC Savana 2500, and GMC Savana 3500 vans. The clear plastic body helps with fluid inspection, while the included cap supports a complete reservoir service. Part number 603-191 also cross-references OE number 88958134 for the same application.

Common Problems It Helps Solve

• Washer fluid leaks from a damaged reservoir
• Low or no windshield washer fluid storage
• Cracks caused by heat cycling or vibration
• Missing or broken reservoir cap
• Washer system service on front-mounted reservoir applications

Installation Notes and Tips

Verify the reservoir shape, mounting points, and hose routing against the original part before installation. This reservoir does not include mounting hardware or a mounting bracket, so reuse existing vehicle components where applicable. Confirm the cap seals properly and inspect washer hoses and pump connections during replacement.

Quality Assurance

Dorman tests this reservoir for fit and performance on specific vehicle applications. The design is intended to meet the demands of underhood heat and engine vibration on the listed Chevrolet Express and GMC Savana models.