Dorman 603-583 Washer Fluid Reservoir - Front

Washer Fluid Reservoir for GM Applications

This Dorman washer fluid reservoir is a direct replacement for select Chevrolet, Buick, and Cadillac vehicles that need a front-mounted windshield washer tank. Built from plastic and shaped for specific applications, Dorman 603-583 is made to handle underhood heat and engine vibration while maintaining proper washer fluid storage and delivery.

Compatible with 2010-2020 GM models including Chevrolet Impala, Chevrolet Malibu, Chevrolet Malibu Limited, Cadillac XTS, Buick Regal, Buick LaCrosse, and Buick Allure, this reservoir supports OE-style fitment for common windshield washer system repairs. Part number 603-583 is a practical choice when the original reservoir is cracked, leaking, or no longer holding fluid.

• Plastic reservoir construction
• White finish for easy visual inspection
• 3.7 L fluid capacity
• Bolt-on attachment type
• Reservoir cap included
• Package includes reservoir, cap, and filler neck
• No washer pump included
• No hoses, mounting bracket, or fluid level sensor included

Detailed Product Overview

Dorman 603-583 is a windshield washer reservoir engineered for specific front-position applications on Chevrolet Impala, Buick LaCrosse, Buick Regal, Cadillac XTS, and related GM platforms. The reservoir is designed to match the vehicle’s mounting points and hose port layout, with a 0.57 in hose port diameter and bolt-on attachment for a secure installation. Its 7 x 11 x 14 in dimensions and 3.7 L capacity support proper washer fluid storage for routine visibility maintenance.

This part cross-references 13311008 for the same application.

Common Repair Uses

• Cracked or leaking washer fluid reservoir
• Washer fluid loss from heat-related plastic damage
• Poor windshield washer spray due to reservoir failure
• Broken filler neck or damaged reservoir cap area
• Replacement during front-end washer system service

Installation Notes and Tips

Verify the vehicle’s front-mounted reservoir configuration before installation. Transfer any reusable components only if they are not included with the replacement part, and confirm hose routing, port size, and mounting points match the original reservoir. Because no washer pump, hoses, mounting bracket, or hardware are included, inspect those components during service and replace worn parts as needed.

Quality Assurance

Dorman manufactures this replacement washer fluid reservoir to withstand underhood heat and engine vibration, and it is tested for fit and performance on specific vehicle applications. Part number 603-583 is built as an OE-style replacement for dependable service on the listed GM fitments.