OE Quality
60-Day Returns

Dorman 603-173 Washer Fluid Reservoir - Front
Overview of Dorman 603-173 Washer Fluid Reservoir
The Dorman 603-173 washer fluid reservoir is designed for reliable windshield washer system performance in select Buick, Chevrolet, and Pontiac vehicles. This replacement reservoir comes with a mounting bracket and cap, ensuring a secure fit and proper sealing for your vehicle's washer fluid system.
- Constructed from durable white plastic material
- Includes mounting bracket for easy installation
- Comes with a reservoir cap to prevent fluid contamination
- Package contains one washer fluid reservoir and one cap
- Compatible with Buick Allure, Chevrolet Impala, Impala Limited, LaCrosse, Monte Carlo, and Pontiac Grand Prix models
Product Details and Specifications
The Dorman 603-173 washer fluid reservoir is made from sturdy plastic, providing resistance to corrosion and wear from washer fluid exposure. Its white color allows for easy fluid level inspection. The included mounting bracket ensures the reservoir is securely attached to the vehicle frame, while the cap helps maintain fluid cleanliness and prevents leaks. This part does not include mounting hardware, so existing fasteners should be reused or sourced separately. The reservoir is engineered to meet the specifications required for proper fitment in Buick Allure, Chevrolet Impala, Impala Limited, LaCrosse, Monte Carlo, and Pontiac Grand Prix models, making it a direct replacement for the original component.
Compatible Vehicles and Applications
This washer fluid reservoir is compatible with the following vehicles:
- Buick Allure
- Chevrolet Impala and Impala Limited
- Buick LaCrosse
- Chevrolet Monte Carlo
- Pontiac Grand Prix
Using the Dorman 603-173 ensures proper fit and function for these specific models, maintaining the integrity of the windshield washer system.
Common Issues Addressed by This Washer Fluid Reservoir
- Leaking or cracked original washer fluid reservoir
- Inability to hold washer fluid due to damage or wear
- Contaminated washer fluid from missing or damaged reservoir cap
- Loose or unstable reservoir mounting causing rattling or noise
- Reduced washer system performance due to faulty reservoir
Installation Notes and Tips
Before installation, ensure the vehicle is parked on a level surface and the ignition is off. Drain any remaining washer fluid from the old reservoir. The Dorman 603-173 includes a mounting bracket but does not come with mounting hardware; retain or replace fasteners as needed. Carefully align the reservoir with the mounting points on your Buick, Chevrolet, or Pontiac model and secure it firmly. Attach the included cap to prevent fluid leaks and contamination. After installation, refill the reservoir with appropriate washer fluid and test the system for proper operation.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-173 washer fluid reservoir undergoes quality checks to ensure durability and compatibility with specified Buick, Chevrolet, and Pontiac models. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | Dorman |
| Part Number | 603-173 |
| Color | White |
| Material | Plastic |
| Mounting Bracket Included | Yes |
| Mounting Hardware Included | No |
| Package Contents | 1 Washer Fluid Reservoir; 1 Cap |
| Reservoir Cap Included | Yes |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2016 | Chevrolet | Impala Limited | Front | |
| 2015 | Chevrolet | Impala Limited | Front | |
| 2014 | Chevrolet | Impala Limited | Front | |
| 2013 | Chevrolet | Impala | Front | |
| 2012 | Chevrolet | Impala | Front | |
| 2011 | Chevrolet | Impala | Front | |
| 2010 | Chevrolet | Impala | Front | |
| 2009 | Buick | Allure | Front | |
| 2009 | Buick | LaCrosse | Front | |
| 2009 | Chevrolet | Impala | Front | |
| 2008 | Buick | Allure | Front | |
| 2008 | Buick | LaCrosse | Front | |
| 2008 | Chevrolet | Impala | Front | |
| 2008 | Pontiac | Grand Prix | Front | |
| 2007 | Buick | Allure | Front | |
| 2007 | Buick | LaCrosse | Front | |
| 2007 | Chevrolet | Impala | Front | |
| 2007 | Chevrolet | Monte Carlo | Front | |
| 2007 | Pontiac | Grand Prix | Front | |
| 2006 | Buick | Allure | Front | |
| 2006 | Buick | LaCrosse | Front | |
| 2006 | Chevrolet | Impala | Front | |
| 2006 | Chevrolet | Monte Carlo | Front | |
| 2006 | Pontiac | Grand Prix | Front |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.