OE Quality
60-Day Returns

Dorman 603-387 Engine Coolant Reservoir - Front
Overview of Dorman Engine Coolant Reservoir 603-387
The Dorman 603-387 engine coolant reservoir is designed specifically for Nissan 200SX and Sentra models. This white plastic coolant reservoir includes a cap and is engineered to meet the cooling system requirements of these vehicles, ensuring proper coolant storage and system performance.
- Constructed from durable white plastic material
- Includes one coolant reservoir and one cap
- Cap type included for secure sealing
- Features two mounting holes for installation
- Non-pressurized design compatible with Nissan 200SX and Sentra
- Mounting hardware and brackets not included
Detailed Product Description
The Dorman 603-387 engine coolant reservoir is a direct replacement part designed to maintain the proper coolant level in Nissan 200SX and Sentra vehicles. Made from sturdy plastic, this reservoir resists corrosion and withstands the heat generated by the engine. The included cap ensures a secure seal to prevent coolant loss, while the two mounting holes allow for straightforward installation using existing vehicle hardware. This reservoir is non-pressurized, matching the original equipment specifications for the compatible Nissan models.
Common Applications and Problem Resolution
- Replaces cracked or leaking coolant reservoirs
- Prevents coolant overflow and engine overheating
- Restores proper coolant level monitoring
- Eliminates coolant contamination from damaged tanks
- Addresses coolant system pressure inconsistencies in Nissan 200SX and Sentra
Installation Notes and Tips
Installation of the Dorman 603-387 reservoir requires removal of the old tank and securing the new reservoir using the vehicle’s existing mounting hardware through the two mounting holes. Since mounting brackets and hardware are not included, ensure that original components are in good condition or replaced as needed. The included cap should be properly tightened to maintain system integrity. It is recommended to check for leaks and coolant levels after installation.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-387 engine coolant reservoir undergoes quality inspections to ensure durability and reliability in Nissan 200SX and Sentra vehicles. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.
| Brand | Dorman |
| Part Number | 603-387 |
| Cap Included | Yes |
| Cap Type | Yes |
| Color | White |
| Material | Plastic |
| Mounting Brackets Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Package Contents | 1 Coolant Reservoir; 1 Cap |
| Pressurized | No |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2000 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
| 2000 | Nissan | Sentra | 2.0L | L4 | Front | Built in Mexico |
| 1999 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
| 1999 | Nissan | Sentra | 2.0L | L4 | Front | Built in Mexico |
| 1998 | Nissan | 200SX | 1.6L | L4 | Front | |
| 1998 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
| 1998 | Nissan | Sentra | 2.0L | L4 | Front | Built in Mexico |
| 1997 | Nissan | 200SX | 1.6L | L4 | Front | |
| 1997 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
| 1997 | Nissan | Sentra | 2.0L | L4 | Front | Built in Mexico |
| 1996 | Nissan | 200SX | 1.6L | L4 | Front | |
| 1996 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
| 1996 | Nissan | Sentra | 2.0L | L4 | Front | Built in Mexico |
| 1995 | Nissan | 200SX | 1.6L | L4 | Front | |
| 1995 | Nissan | Sentra | 1.6L | L4 | Front | Built in Mexico |
* 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.