HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-358 Engine Coolant Reservoir - Front
Part #: 603-358

Dorman 603-358 Engine Coolant Reservoir - Front

Front
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Lincoln, Fusion and MKZ
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Reliable Engine Coolant Reservoir for Ford Fusion and Lincoln MKZ

The Dorman 603-358 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your Ford Fusion or Lincoln MKZ. Crafted from durable clear plastic, this reservoir allows for easy fluid level monitoring and is built to meet the demands of your vehicle's cooling system.

  • Constructed from clear plastic for easy coolant level visibility
  • Includes one coolant reservoir and one spring loaded twist cap
  • Cap is pressurized with a maximum pressure rating of 16 psi
  • Equipped with two mounting holes for secure installation
  • Compatible with Ford Fusion and Lincoln MKZ models

Durable Design and Functional Features

This engine coolant reservoir by Dorman is engineered to replace the original part with precision fitment for Ford Fusion and Lincoln MKZ vehicles. The clear plastic material provides durability while allowing you to visually inspect coolant levels without removing the cap. The included spring loaded twist cap is pressurized to 16 psi, ensuring the cooling system maintains proper pressure to prevent overheating and coolant loss. Although mounting hardware and brackets are not included, the reservoir features two mounting holes to facilitate straightforward installation using existing vehicle components.

Purpose and Common Issues Addressed

  • Maintains proper coolant levels to prevent engine overheating
  • Replaces cracked or leaking coolant reservoirs
  • Restores pressurization in the cooling system to improve efficiency
  • Prevents coolant contamination by providing a sealed environment
  • Helps avoid engine damage caused by coolant loss or pressure failure

Installation Notes and Tips

Installation of the Dorman 603-358 engine coolant reservoir requires removal of the old reservoir and securing the new one using the two mounting holes. Since mounting hardware and brackets are not included, reuse the original components or acquire compatible hardware separately. Ensure the spring loaded twist cap is properly tightened to maintain system pressure. Always check for leaks after installation and refill the coolant to the recommended level for your Ford Fusion or Lincoln MKZ.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and fitment. The 603-358 engine coolant reservoir undergoes quality checks to ensure durability and functionality. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number603-358
Cap IncludedYes
Cap Maximum Pressure Rating16
Cap TypeSpring Loaded Twist
ColorClear
MaterialPlastic
Mounting Brackets IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Package Contents1 Coolant Reservoir; 1 Cap
PressurizedYes

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011FordFusion3.5LV6Frontw/2 Ports
2011LincolnMKZ3.5LV6Frontw/2 Ports
2010FordFusion3.5LV6Frontw/2 Ports
2010LincolnMKZ3.5LV6Frontw/2 Ports
2009LincolnMKZ3.5LV6Frontw/2 Ports
2008LincolnMKZ3.5LV6Frontw/2 Ports

* 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:

9C3Z8101BFRT1527C

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