HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-333 Engine Coolant Reservoir - Front
Part #: 603-333

Dorman 603-333 Engine Coolant Reservoir - Front

Front
⚙️ 17 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, Lincoln, and Mercury, Fusion, MKZ, and Milan
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Reliable Engine Coolant Reservoir for Ford Fusion and Lincoln MKZ

The Dorman 603-333 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your vehicle's cooling system. Compatible with Ford Fusion, Lincoln MKZ, and Mercury Milan models, this reservoir ensures efficient engine temperature regulation.

  • Durable white plastic construction for long-lasting use
  • Includes one spring loaded twist cap rated for 16 psi pressure
  • Pressurized reservoir to maintain proper coolant system pressure
  • One mounting hole for secure installation (mounting hardware not included)
  • Complete package includes one coolant reservoir and one cap

Product Details and Specifications

The Dorman 603-333 engine coolant reservoir is made from high-quality plastic, providing resistance to heat and corrosion. Its white color allows for easy coolant level inspection. The included spring loaded twist cap is designed to maintain a maximum pressure rating of 16 psi, helping to prevent coolant loss and overheating. This pressurized reservoir supports the cooling system's efficiency by maintaining consistent pressure during engine operation. The reservoir features a single mounting hole for installation; however, mounting hardware and brackets are not included, so ensure you have the necessary components for your specific vehicle.

Compatible Vehicles and Applications

This engine coolant reservoir is compatible with select Ford, Lincoln, and Mercury models, specifically the Ford Fusion, Lincoln MKZ, and Mercury Milan. When searching for a replacement part, referencing the Dorman part number 603-333 will help ensure proper fitment and function for these vehicles.

Common Issues Addressed by This Coolant Reservoir

  • Coolant leaks due to cracked or damaged reservoirs
  • Overheating caused by loss of coolant pressure
  • Inaccurate coolant level readings from discolored or opaque reservoirs
  • Failure of the pressure cap leading to coolant system inefficiency
  • Replacement of worn or deteriorated original equipment reservoirs

Installation Notes and Tips

Before installation, verify compatibility with your vehicle's make and model. The Dorman 603-333 reservoir includes one mounting hole but does not come with mounting hardware or brackets, so retain or acquire the necessary components. Ensure the spring loaded twist cap is properly secured to maintain system pressure. Always allow the engine to cool before removing the old reservoir to avoid injury from hot coolant.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-333 engine coolant reservoir undergoes quality checks to ensure durability and performance. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part Number603-333
Cap IncludedYes
Cap Maximum Pressure Rating16
Cap TypeSpring Loaded Twist
ColorWhite
MaterialPlastic
Mounting Brackets IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity1
Package Contents1 Coolant Reservoir; 1 Cap
PressurizedYes

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2012FordFusion2.5LL4ELECTRIC/GASFront
2012FordFusion3.0LV6N/A
2012FordFusion2.5LL4GASN/A
2012LincolnMKZ2.5LL4Front
2011FordFusion2.5LL4ELECTRIC/GASFront
2011FordFusion3.0LV6N/A
2011FordFusion2.5LL4GASN/A
2011LincolnMKZ2.5LL4Front
2011MercuryMilan2.5LL4ELECTRIC/GASFront
2011MercuryMilan3.0LV6N/A
2011MercuryMilan2.5LL4GASN/A
2010FordFusion2.5LL4ELECTRIC/GASFront
2010FordFusion3.0LV6N/A
2010FordFusion2.5LL4GASN/A
2010MercuryMilan2.5LL4ELECTRIC/GASFront
2010MercuryMilan3.0LV6N/A
2010MercuryMilan2.5LL4GASN/A

* 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:

9C3Z8101BFRT1526C

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