HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-134 Engine Coolant Reservoir - Front or Radiator
Part #: 603-134

Dorman 603-134 Engine Coolant Reservoir - Front or Radiator

Front
⚙️ 6 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 603-134 engine coolant reservoir is designed specifically for Ford Mustang models, providing a reliable and durable solution for your vehicle's cooling system. Made from high-quality plastic, this reservoir ensures efficient coolant storage and pressure management.

  • Material: Durable plastic construction
  • Dimensions: 17.5 inches length, 8.25 inches height
  • Color: Black and clear for easy coolant level monitoring
  • Includes mounting brackets and a pressurized cap rated up to 16 psi
  • Capacity: 3 liters
  • Mounting holes: 3 for secure installation
  • Cap included with the reservoir

Detailed Product Description

The Dorman 603-134 engine coolant reservoir is engineered to meet the specifications required for Ford Mustang vehicles. Its irregular shape is designed to fit precisely within the engine bay, optimizing space without compromising capacity. The black and clear plastic construction allows for quick visual checks of coolant levels, while the included pressurized cap maintains system pressure up to 16 psi, helping to prevent overheating and coolant loss. The reservoir comes with mounting brackets and three mounting holes to ensure a secure and stable fit during operation.

Common Applications and Problem Solving

  • Replaces cracked or leaking coolant reservoirs
  • Prevents coolant overflow and loss under pressure
  • Helps maintain proper engine temperature by ensuring coolant availability
  • Addresses issues with coolant contamination due to damaged caps
  • Restores proper coolant system pressure with included cap

Installation Notes and Tips

Installation of the Dorman 603-134 reservoir is straightforward for Ford Mustang owners familiar with engine bay components. Ensure the engine is cool before removal of the old reservoir to avoid burns. Use the included mounting brackets and three mounting holes for a secure fit. Verify that the pressurized cap is properly seated to maintain system integrity. No additional mounting hardware is included, so retain any reusable fasteners from the original reservoir if necessary.

Quality Assurance and Warranty

Dorman manufactures this engine coolant reservoir to meet or exceed OEM standards for fit, form, and function. The product includes a pressurized cap rated for 16 psi to ensure reliable performance under normal operating conditions. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.

BrandDorman
Part Number603-134
Cap IncludedYes
Cap Maximum Pressure Rating16
Cap TypeYes
Capacity3 L
ColorBlack and Clear
Height8.25
Length17.5
MaterialPlastic
Mounting Brackets IncludedYes
Mounting Hardware IncludedNo
Mounting Hole Quantity3
Package Contents1 Reservoir; 1 Cap
PressurizedYes
ShapeIrregular

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004FordMustang4.6LV8Front
2004FordMustang4.6LV8Radiator
2003FordMustang4.6LV8Front
2003FordMustang4.6LV8Radiator
2002FordMustang4.6LV8Front
2001FordMustang4.6LV8Front

* 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:

1R3Z8A080AA

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