OE Quality
60-Day Returns

Dorman 603-232 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir for Honda Civic
The Dorman 603-232 engine coolant reservoir is designed specifically for Honda Civic models, providing a reliable replacement for your vehicle's cooling system. Made from durable white plastic, this reservoir includes a cap and is engineered to meet the cooling needs of your engine without pressurization.
- Constructed from durable white plastic material
- Includes one coolant reservoir and one cap
- Cap type included for secure sealing
- Single mounting hole for straightforward installation
- Compatible with Honda Civic models
Product Details and Specifications
This engine coolant reservoir by Dorman (part number 603-232) is a non-pressurized plastic tank designed to hold excess coolant fluid safely. The white plastic construction allows for easy fluid level monitoring. It comes with a matching cap to ensure a proper seal and prevent coolant contamination. The reservoir features one mounting hole, but mounting hardware and brackets are not included, allowing for compatibility with existing vehicle mounts. This part is engineered to fit Honda Civic vehicles, ensuring proper fit and function within the cooling system.
Compatible Vehicles and Applications
This coolant reservoir is compatible with various Honda Civic models, making it a suitable replacement part for owners seeking to maintain or repair their vehicle's cooling system. The Dorman 603-232 is designed to restore proper coolant containment and overflow management, which is critical for engine temperature regulation.
- Prevents coolant leaks and overflow issues
- Replaces cracked or damaged reservoirs
- Helps maintain optimal engine temperature
- Prevents air from entering the cooling system
- Supports proper coolant circulation and storage
Installation Notes and Tips
Installation of the Dorman 603-232 engine coolant reservoir requires removal of the old reservoir and securing the new one using the existing mounting hardware on the Honda Civic. Since mounting hardware and brackets are not included, ensure your vehicle’s original components are in good condition or replaced as needed. The included cap should be securely tightened to prevent leaks. Always check for proper coolant levels and system pressure after installation.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-232 engine coolant reservoir undergoes quality checks to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty policy for exact terms.
| Brand | Dorman |
| Part Number | 603-232 |
| Cap Included | Yes |
| Cap Type | Yes |
| Color | White |
| Material | Plastic |
| Mounting Brackets Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 1 |
| Package Contents | 1 Coolant Reservoir; 1 Cap |
| Pressurized | No |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Honda | Civic | 1.3L | L4 | Front | |
| 2011 | Honda | Civic | 1.8L | L4 | Front | |
| 2011 | Honda | Civic | 2.0L | L4 | Front | |
| 2010 | Honda | Civic | 1.3L | L4 | Front | |
| 2010 | Honda | Civic | 1.8L | L4 | Front | |
| 2010 | Honda | Civic | 2.0L | L4 | Front | |
| 2009 | Honda | Civic | 1.3L | L4 | Front | |
| 2009 | Honda | Civic | 1.8L | L4 | Front | |
| 2009 | Honda | Civic | 2.0L | L4 | Front | |
| 2008 | Honda | Civic | 1.3L | L4 | Front | |
| 2008 | Honda | Civic | 1.8L | L4 | Front | |
| 2008 | Honda | Civic | 2.0L | L4 | Front | |
| 2007 | Honda | Civic | 1.3L | L4 | Front | |
| 2007 | Honda | Civic | 1.8L | L4 | Front | |
| 2007 | Honda | Civic | 2.0L | L4 | Front | |
| 2006 | Honda | Civic | 1.3L | L4 | Front | |
| 2006 | Honda | Civic | 1.8L | L4 | Front | |
| 2006 | Honda | Civic | 2.0L | L4 | 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.