Dorman 603-871 Washer Fluid Reservoir - Front

Washer Fluid Reservoir for GM HD Trucks

Dorman 603-871 is a front washer fluid reservoir built to match the original equipment fit and function on select Chevrolet Silverado 2500 HD, Silverado 3500 HD, and GMC Sierra HD applications. It is made from plastic and engineered for underhood heat and engine vibration in the specified vehicle range.

• Direct-fit washer fluid reservoir for front applications
• Plastic construction with black and white housing color details
• Bracketed attachment type with mounting bracket included
• Reservoir cap included; washer pump not included
• No hoses, mounting hardware, or fluid level sensor included
• 3.5 L working capacity

Detailed Product Overview

This Dorman washer fluid reservoir, part number 603-871, is designed for OE-style replacement on 2011-2014 Chevrolet Silverado 2500 HD, 2011-2014 Chevrolet Silverado 3500 HD, 2011-2014 GMC Sierra 2500 HD, 2011-2014 GMC Sierra 3500 HD, and 2014 Chevrolet Silverado 2500 front applications. It also cross-references GM 22880826 for the same application. The reservoir is bracket-mounted and supplied with a cap, making it a practical replacement when the original tank is cracked, leaking, or no longer holding washer fluid properly.

Common Problems This Part Can Address

• Washer fluid leaks from a damaged reservoir
• Cracks caused by heat cycling or vibration
• Low washer fluid storage capacity from a failed tank
• Broken or missing reservoir cap
• Fitment issues when replacing an OE-style front washer tank

Installation Notes and Tips

Verify the vehicle year, make, model, and front position before installation. Transfer any reusable components from the original system as needed, since the washer pump, hoses, and mounting hardware are not included. Confirm hose port alignment and bracket location before filling the reservoir with washer fluid.

Quality Assurance

Dorman designs this reservoir to match OE fit and function and to withstand underhood heat and engine vibration in the listed applications. Part number 603-871 is built for direct replacement use on the specified Chevrolet and GMC HD truck platforms.