HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-285 Engine Coolant Reservoir - Front
Part #: 603-285

Dorman 603-285 Engine Coolant Reservoir - Front

Front
⚙️ 20 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Mustang
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Overview of Dorman Engine Coolant Reservoir for Ford Mustang

The Dorman 603-285 engine coolant reservoir is designed specifically for Ford Mustang models, providing a reliable solution for your vehicle's cooling system. Made from durable plastic, this gray reservoir includes a pressurized cap and mounting brackets to ensure proper fit and function.

  • Material: Durable plastic construction
  • Dimensions: 12 inches length, 9 inches height
  • Color: Gray
  • Includes mounting brackets and a pressurized cap with a 21 psi maximum pressure rating
  • Capacity: 4 liters
  • Shape: Irregular with 2 mounting holes for secure installation
  • Package contents: 1 reservoir and 1 cap included

Detailed Product Description

The Dorman 603-285 engine coolant reservoir is engineered to meet the specifications of Ford Mustang vehicles, ensuring compatibility and performance. Constructed from high-quality plastic, this reservoir is designed to withstand the pressures of the cooling system, featuring a pressurized cap rated up to 21 psi. The gray reservoir measures 12 inches in length and 9 inches in height, with an irregular shape that fits precisely within the engine bay. It includes two mounting holes and brackets for secure attachment, although additional mounting hardware is not included. The 4-liter capacity allows for efficient coolant storage and circulation, helping maintain optimal engine temperature.

Common Applications and Issues Addressed

  • Replacement for cracked or leaking coolant reservoirs in Ford Mustang models
  • Prevents coolant loss and overheating due to damaged or faulty reservoirs
  • Restores proper coolant pressure with included pressurized cap
  • Helps maintain engine temperature stability during operation
  • Addresses coolant contamination by providing a sealed reservoir environment

Installation Notes and Tips

Installation of the Dorman 603-285 engine coolant reservoir is straightforward for Ford Mustang owners familiar with cooling system components. Ensure the engine is cool before beginning installation to avoid injury. Use the included mounting brackets and the two mounting holes to secure the reservoir firmly in place. Since mounting hardware is not included, verify that existing bolts or screws are compatible or obtain appropriate replacements. Properly install the pressurized cap to maintain system pressure and prevent leaks.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Ford Mustang vehicles. The 603-285 engine coolant reservoir undergoes quality checks to ensure durability and fitment accuracy. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part Number603-285
Cap IncludedYes
Cap Maximum Pressure Rating21
Cap TypeYes
Capacity4 L
ColorGray
Height9
Length12
MaterialPlastic
Mounting Brackets IncludedYes
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Package Contents1 Reservoir; 1 Cap
PressurizedYes
ShapeIrregular

This part fits 20 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2023FordMustang2.3LL4N/A
2022FordMustang2.3LL4N/A
2021FordMustang2.3LL4N/A
2020FordMustang5.2LV8N/A
2019FordMustang5.0LV8N/A
2018FordMustang5.2LV8Front
2018FordMustang5.0LV8Front
2018FordMustang2.3LL4Front
2017FordMustang5.2LV8Front
2017FordMustang3.7LV6Front
2017FordMustang5.0LV8Front
2017FordMustang2.3LL4Front
2016FordMustang5.2LV8Front
2016FordMustang3.7LV6Front
2016FordMustang5.0LV8Front
2016FordMustang2.3LL4Front
2015FordMustang5.2LV8Front
2015FordMustang3.7LV6Front
2015FordMustang5.0LV8Front
2015FordMustang2.3LL4Front

* 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:

DG9Z8100A

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