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Dorman 603-203 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir 603-203
The Dorman 603-203 engine coolant reservoir is designed for reliable cooling system performance in Ford Taurus and Mercury Sable vehicles. This clear plastic reservoir includes a spring loaded twist cap and mounting brackets for secure installation.
- Material: Durable clear plastic for easy fluid level monitoring
- Cap Type: Spring loaded twist cap included with a 16 psi pressure rating
- Mounting: Comes with mounting brackets and two mounting holes for proper fitment
- Pressurized reservoir designed to maintain system pressure
- Package includes one coolant reservoir and one cap
Detailed Product Description
The Dorman 603-203 engine coolant reservoir is engineered to meet the cooling system requirements of Ford Taurus and Mercury Sable models. Constructed from clear plastic, it allows for quick visual inspection of coolant levels without removal. The included spring loaded twist cap is rated for a maximum pressure of 16 psi, ensuring the cooling system maintains proper pressure to prevent overheating and coolant loss. This reservoir is pressurized and comes with mounting brackets and two mounting holes, facilitating a secure and stable installation in the engine bay.
Compatible Vehicles and Applications
This engine coolant reservoir is compatible with the following vehicles:
- Ford Taurus
- Mercury Sable
It is specifically designed to replace the original reservoir in these models, ensuring proper fit and function.
Common Issues Addressed by This Coolant Reservoir
- Coolant leaks due to cracked or damaged reservoirs
- Inaccurate coolant level readings from discolored or opaque tanks
- Loss of system pressure causing engine overheating
- Failure of the reservoir cap leading to coolant evaporation
- Improper mounting causing vibrations or damage to the reservoir
Installation Notes and Tips
- Ensure the engine is cool before removing the old reservoir to avoid burns
- Check that the mounting brackets and holes align properly with the vehicle’s frame
- Use the included spring loaded twist cap to maintain correct system pressure
- Inspect hoses connected to the reservoir for wear or damage during installation
- Fill the reservoir with the recommended coolant type and check for leaks after installation
Quality Assurance and Warranty
Dorman manufactures the 603-203 engine coolant reservoir to meet or exceed OEM specifications for Ford Taurus and Mercury Sable vehicles. The product includes a cap rated for 16 psi to maintain system integrity. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.
| Brand | Dorman |
| Part Number | 603-203 |
| Cap Included | Yes |
| Cap Maximum Pressure Rating | 16 |
| Cap Type | Spring Loaded Twist |
| Color | Clear |
| Material | Plastic |
| Mounting Brackets Included | Yes |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Package Contents | 1 Coolant Reservoir; 1 Cap |
| Pressurized | Yes |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Ford | Taurus | 3.0L | V6 | Front | |
| 2006 | Ford | Taurus | 3.0L | V6 | Front | |
| 2005 | Ford | Taurus | 3.0L | V6 | Front | |
| 2005 | Mercury | Sable | 3.0L | V6 | Front | |
| 2004 | Ford | Taurus | 3.0L | V6 | Front | |
| 2004 | Mercury | Sable | 3.0L | V6 | Front | |
| 2003 | Ford | Taurus | 3.0L | V6 | Front | |
| 2003 | Mercury | Sable | 3.0L | V6 | Front | |
| 2002 | Ford | Taurus | 3.0L | V6 | Front | |
| 2002 | Mercury | Sable | 3.0L | V6 | Front | |
| 2001 | Ford | Taurus | 3.0L | V6 | Front | |
| 2001 | Mercury | Sable | 3.0L | V6 | Front | |
| 2000 | Ford | Taurus | 3.0L | V6 | Front | |
| 2000 | Mercury | Sable | 3.0L | V6 | 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.