HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-378 Engine Coolant Reservoir - Front
Part #: 603-378

Dorman 603-378 Engine Coolant Reservoir - Front

Front
⚙️ 12 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, Dart
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Reliable Engine Coolant Reservoir for Dodge Dart

The Dorman 603-378 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your Dodge Dart's cooling system. Made from durable plastic, this white reservoir includes a spring loaded twist cap rated for 21 psi, ensuring reliable performance under pressurized conditions.

  • Constructed from durable plastic material for long-lasting use
  • Dimensions: 8.44 inches length and 4.03 inches height
  • Includes spring loaded twist cap with a maximum pressure rating of 21 psi
  • Pressurized reservoir design to maintain proper coolant system pressure
  • Comes with mounting brackets and features three mounting holes for secure installation
  • Capacity of 1.1 liters to accommodate coolant expansion
  • Cap included for a complete replacement solution

Product Details and Specifications

The Dorman 603-378 engine coolant reservoir is specifically engineered for the Dodge Dart, providing a precise fit and reliable function. Its irregular shape is designed to fit the engine bay layout efficiently. The reservoir is pressurized to help maintain the cooling system's integrity and prevent overheating. The included spring loaded twist cap allows for easy access while maintaining a secure seal. Although mounting hardware is not included, the reservoir comes with mounting brackets and three mounting holes to facilitate installation.

Common Applications and Problem Resolution

  • Replaces cracked or leaking coolant reservoirs in Dodge Dart models
  • Restores proper coolant level monitoring and containment
  • Prevents coolant loss due to faulty or damaged reservoirs
  • Maintains system pressure to avoid overheating and engine damage
  • Addresses issues with coolant reservoir caps that fail to hold pressure

Installation Notes and Tips

Before installation, ensure the engine is cool to avoid injury from hot coolant. Drain the existing coolant reservoir and disconnect any hoses carefully. Align the Dorman 603-378 reservoir using the three mounting holes and secure it with appropriate hardware (not included). Attach the spring loaded twist cap securely to maintain system pressure. After installation, refill the cooling system with the recommended coolant and check for leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-378 engine coolant reservoir undergoes quality checks to ensure durability and performance. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number603-378
MaterialPlastic
Length8.44
ColorWhite
Mounting Hardware IncludedNo
Height4.03
ShapeIrregular
Mounting Hole Quantity3
Mounting Brackets IncludedYes
Cap TypeSpring loaded twist
PressurizedYes
Cap Maximum Pressure Rating21
Level Sensor IncludedNo
Cap IncludedYes
Capacity1.1 l
Package Contents1 coolant reservoir; 1 cap

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016DodgeDart2.4LL4Front
2016DodgeDart1.4LL4Front
2016DodgeDart2.0LL4Front
2015DodgeDart2.4LL4Front
2015DodgeDart1.4LL4Front
2015DodgeDart2.0LL4Front
2014DodgeDart2.4LL4Front
2014DodgeDart1.4LL4Front
2014DodgeDart2.0LL4Front
2013DodgeDart2.0LL4Front
2013DodgeDart2.4LL4Front
2013DodgeDart1.4LL4Front

* 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:

55111471AB

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.