OE Quality
60-Day Returns

Dorman 603-650 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir 603-650
The Dorman 603-650 engine coolant reservoir is designed for reliable coolant storage and management in select Ford and Volvo vehicles. This replacement reservoir is engineered to meet the specific requirements of models such as the Ford Focus and Volvo S40, ensuring proper fit and function.
- Constructed from durable white plastic for corrosion resistance
- Includes mounting brackets for secure installation
- Comes with a spring loaded twist cap for secure sealing
- Cap included in the package for convenience
- Compatible with Ford C30, C70, Focus and Volvo S40, V50 models
Detailed Product Description
The Dorman 603-650 engine coolant reservoir is made from high-quality plastic material that resists heat and corrosion, providing long-lasting service life. Its white color allows for easy coolant level inspection without removing the cap. The included mounting brackets facilitate a secure and stable fitment in the engine bay, while the spring loaded twist cap ensures a tight seal to maintain proper system pressure and prevent leaks. This reservoir is specifically designed to replace the original part in Ford and Volvo vehicles, including the Ford Focus and Volvo V50, maintaining OEM specifications for fit and performance.
Compatible Vehicles and Common Applications
This engine coolant reservoir is compatible with the following vehicles:
- Ford C30 and C70
- Ford Focus
- Volvo S40 and V50
It is commonly used to address issues such as coolant leaks, cracked or damaged reservoirs, and improper coolant level readings.
Common Issues Addressed by This Coolant Reservoir
- Coolant leaks due to cracked or worn reservoirs
- Overheating caused by insufficient coolant storage
- Pressure loss in the cooling system from faulty caps
- Difficulty monitoring coolant levels with discolored or opaque reservoirs
- Loose or damaged mounting points leading to reservoir movement
Installation Notes and Tips
- Ensure the engine is cool before removing the old reservoir to avoid burns
- Use the included mounting brackets for proper alignment and secure fit
- Check the spring loaded twist cap for proper sealing after installation
- Inspect hoses connected to the reservoir for wear or damage and replace if necessary
- Refill the reservoir with the recommended coolant type for your vehicle
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards for quality and durability. The 603-650 engine coolant reservoir undergoes rigorous testing to ensure reliable performance in Ford and Volvo vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.
| Brand | Dorman |
| Part Number | 603-650 |
| Cap Included | Yes |
| Cap Type | Spring Loaded Twist |
| Color | White |
| Material | Plastic |
| Mounting Brackets Included | Yes |
| Mounting Hardware Included | No |
| Package Contents | 1 Coolant Reservoir; 1 Cap |
This part fits 54 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2013 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2013 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2012 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2012 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2012 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2011 | Ford | Focus | 2.5L | L5 | Front | |
| 2011 | Volvo | C30 | 2.4L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2011 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2011 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2011 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2011 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2010 | Ford | Focus | 2.5L | L5 | Front | |
| 2010 | Volvo | C30 | 2.4L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2010 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2010 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2010 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2010 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2010 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2010 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2009 | Ford | Focus | 2.5L | L5 | Front | |
| 2009 | Volvo | C30 | 2.4L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2009 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2009 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2009 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2009 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2009 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2009 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2008 | Ford | Focus | 2.5L | L5 | Front | |
| 2008 | Volvo | C30 | 2.4L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2008 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2008 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2008 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2008 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2008 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2008 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2007 | Ford | Focus | 2.5L | L5 | Front | |
| 2007 | Volvo | C30 | 2.4L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2007 | Volvo | C30 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2007 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2007 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2007 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2007 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2007 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2006 | Volvo | C70 | 2.5L | L5 | Front | To Chassis No. 220047; From Chassis No. 226432 |
| 2006 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2006 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2006 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2006 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2005 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2005 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2005 | Volvo | V50 | 2.4L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2005 | Volvo | V50 | 2.5L | L5 | Front | To Chassis No. 590035; From Chassis No. 601388 |
| 2004 | Volvo | S40 | 2.4L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
| 2004 | Volvo | S40 | 2.5L | L5 | Front | To Chassis No. 530026; From Chassis No. 534610 |
* 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.