OE Quality
60-Day Returns

Dorman 603-290 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir for Ford Mustang
The Dorman 603-290 engine coolant reservoir is designed specifically for Ford Mustang models, providing a reliable solution for your vehicle's cooling system. Made from durable plastic, this reservoir ensures efficient coolant storage and pressure management.
- Material: High-quality plastic construction
- Dimensions: 17 inches length, 8 inches height
- Color: Black and clear for easy coolant level monitoring
- Includes mounting brackets and a pressurized cap rated up to 16 psi
- Capacity: 3 liters to accommodate cooling system needs
- Mounting holes: 3 for secure installation
- Cap included with the reservoir
Detailed Product Description
The Dorman 603-290 engine coolant reservoir is engineered to meet the specifications required by Ford Mustang vehicles. Its irregular shape is designed to fit precisely within the engine bay, optimizing space without compromising capacity. The black and clear plastic construction allows for quick visual checks of coolant levels, while the included pressurized cap maintains system pressure up to 16 psi, helping to prevent overheating and coolant loss. The reservoir comes with mounting brackets and three mounting holes to ensure a secure and stable fit during operation.
Common Applications and Problem Solving
- Replaces cracked or leaking coolant reservoirs
- Resolves coolant overflow and loss issues
- Prevents engine overheating due to coolant system failure
- Restores proper pressure regulation in the cooling system
- Eliminates coolant contamination from damaged or missing caps
Installation Notes and Tips
Installation of the Dorman 603-290 reservoir requires removal of the old reservoir and careful alignment of the mounting holes with the vehicle’s mounting points. Use the included mounting brackets for a secure fit. Ensure the pressurized cap is properly seated to maintain system pressure. It is recommended to inspect hoses and clamps during installation and replace if necessary to avoid leaks.
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The 603-290 engine coolant reservoir includes a cap and mounting hardware for convenience. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.
| Brand | Dorman |
| Part Number | 603-290 |
| Cap Included | Yes |
| Cap Maximum Pressure Rating | 16 |
| Cap Type | Yes |
| Capacity | 3 L |
| Color | Black and Clear |
| Height | 8 |
| Length | 17 |
| Material | Plastic |
| Mounting Brackets Included | Yes |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 3 |
| Package Contents | 1 Reservoir; 1 Cap |
| Pressurized | Yes |
| Shape | Irregular |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2000 | Ford | Mustang | 4.6L | V8 | Front | Stamped YR33 8A080-A |
| 1999 | Ford | Mustang | 4.6L | V8 | Front | |
| 1998 | Ford | Mustang | 4.6L | V8 | Front | |
| 1997 | Ford | Mustang | 4.6L | V8 | 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.