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Dorman 603-346 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir for Ford Escape and Mercury Mariner
The Dorman 603-346 engine coolant reservoir is designed specifically for Ford Escape and Mercury Mariner models. This replacement reservoir ensures proper coolant storage and pressure management within your vehicle's cooling system.
- Constructed from durable white plastic for corrosion resistance
- Includes a spring loaded twist cap rated for 17 psi maximum pressure
- Pressurized design to maintain optimal cooling system performance
- Comes with one coolant reservoir and one cap included
- Features two mounting holes for secure installation (mounting hardware not included)
Detailed Product Description
The Dorman 603-346 engine coolant reservoir is engineered to meet the specifications required by Ford Escape and Mercury Mariner vehicles. Made from sturdy plastic, this white reservoir is built to withstand the heat and pressure of the engine cooling system. The included spring loaded twist cap is designed to maintain a maximum pressure rating of 17 psi, helping to prevent coolant loss and overheating. Although mounting hardware and brackets are not included, the reservoir features two mounting holes to facilitate proper attachment using existing vehicle components.
Common Applications and Problem Resolution
- Replacement for cracked or leaking coolant reservoirs in Ford Escape and Mercury Mariner
- Addresses coolant overflow and loss due to damaged or faulty reservoirs
- Helps maintain proper system pressure to prevent engine overheating
- Resolves issues related to coolant contamination from compromised reservoir caps
- Supports cooling system integrity after accident damage or wear
Installation Notes and Tips
When installing the Dorman 603-346 engine coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. Use the existing mounting hardware or brackets from the original reservoir, as this product does not include them. Verify that the spring loaded twist cap is securely tightened to maintain system pressure. Inspect hoses and connections for wear or damage during installation to ensure a complete and reliable repair.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 603-346 engine coolant reservoir undergoes quality checks to ensure durability and performance in Ford Escape and Mercury Mariner vehicles. Warranty coverage details can be obtained from Dorman directly or through authorized distributors.
| Brand | Dorman |
| Part Number | 603-346 |
| Cap Included | Yes |
| Cap Maximum Pressure Rating | 17 |
| Cap Type | Spring Loaded Twist |
| Color | White |
| Material | Plastic |
| Mounting Brackets Included | No |
| 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 | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | Ford | Escape | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2011 | Ford | Escape | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2011 | Mercury | Mariner | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2010 | Ford | Escape | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2010 | Mercury | Mariner | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2009 | Ford | Escape | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2009 | Mercury | Mariner | 2.5L | L4 | ELECTRIC/GAS | Front | |
| 2008 | Ford | Escape | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2008 | Mercury | Mariner | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2007 | Ford | Escape | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2007 | Mercury | Mariner | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2006 | Ford | Escape | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2006 | Mercury | Mariner | 2.3L | L4 | ELECTRIC/GAS | Front | |
| 2005 | Ford | Escape | 2.3L | L4 | ELECTRIC/GAS | 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.