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Dorman 603-5104 Engine Coolant Reservoir - Front
Reliable Engine Coolant Reservoir for Vehicle Cooling Systems
The Dorman 603-5104 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your vehicle's cooling system. Made from durable clear plastic, this reservoir allows for easy fluid level monitoring and is compatible with various makes and models requiring a pressurized coolant system.
- Constructed from clear plastic for easy coolant level visibility
- Includes a spring loaded twist cap rated for 15 psi pressure
- Pressurized design supports efficient cooling system operation
- Equipped with four mounting holes for secure installation
- Package includes one coolant reservoir, one cap, and tubing
Durable Design and Functional Features
The Dorman 603-5104 coolant reservoir is engineered to meet the demands of modern vehicle cooling systems. Its clear plastic construction resists corrosion and allows for quick visual inspection of coolant levels without removing the cap. The included spring loaded twist cap maintains system pressure up to 15 psi, helping prevent overheating and coolant loss. With four mounting holes, the reservoir can be securely fastened in place, ensuring stability during vehicle operation. This part is ideal for vehicles that require a pressurized coolant reservoir with a reliable cap and tubing included for proper connection.
Compatible Vehicles and Common Applications
This engine coolant reservoir is compatible with a range of vehicles that utilize a pressurized cooling system with a spring loaded twist cap. It is commonly used in automotive makes and models that require a clear plastic reservoir with a 15 psi cap rating. The Dorman 603-5104 is suitable for replacing worn or damaged coolant reservoirs in vehicles such as Ford F-150, Chevrolet Silverado, and Dodge Ram trucks, among others.
- Prevents coolant leaks and overflow issues
- Resolves overheating caused by low coolant levels
- Eliminates pressure loss in the cooling system
- Replaces cracked or discolored reservoirs
- Restores proper coolant circulation and system efficiency
Installation Notes and Tips
When installing the Dorman 603-5104 engine coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. Secure the reservoir using the four mounting holes provided, but note that mounting hardware is not included. Connect the included tubing properly to maintain system integrity. Verify that the spring loaded twist cap is tightly sealed to maintain the 15 psi pressure rating. Always check for leaks after installation and refill the coolant to the recommended level.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-5104 engine coolant reservoir undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.
| Brand | Dorman |
| Part Number | 603-5104 |
| Material | Plastic |
| Color | Clear |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 4 |
| Mounting Brackets Included | No |
| Cap Type | Spring loaded twist |
| Pressurized | Yes |
| Cap Maximum Pressure Rating | 15 |
| Cap Included | Yes |
| Package Contents | 1 coolant reservoir; 1 cap; tubing |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
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* 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.