HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-276 Engine Coolant Reservoir - Left
Part #: 603-276

Dorman 603-276 Engine Coolant Reservoir - Left

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⚙️ 12 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford, F-250 Super Duty and F-350 Super Duty
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Reliable Engine Coolant Reservoir for Ford Super Duty Trucks

The Dorman 603-276 engine coolant reservoir is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. Constructed from durable plastic, this reservoir ensures efficient coolant storage and pressure management to maintain optimal engine temperature.

  • Material: High-quality plastic construction for durability
  • Dimensions: 22 inches length and 20.5 inches height
  • Color: Black and clear for easy coolant level monitoring
  • Includes mounting brackets and a pressurized cap rated up to 16 psi
  • Capacity: 6 liters to support heavy-duty cooling needs
  • Mounting holes: 9 for secure installation
  • Cap included with the reservoir for a complete replacement

Durable Design and Precise Fitment

The Dorman 603-276 engine coolant reservoir is engineered to meet the specifications of Ford F-250 Super Duty and F-350 Super Duty trucks. Its irregular shape and multiple mounting holes ensure a secure and exact fit within the engine bay. The black and clear plastic design allows for quick visual checks of coolant levels, while the included pressurized cap maintains system pressure up to 16 psi, helping prevent overheating and coolant loss.

Purpose and Common Issues Addressed

  • Replaces cracked or leaking coolant reservoirs
  • Prevents coolant overflow and engine overheating
  • Restores proper coolant pressure with included cap
  • Eliminates coolant contamination from damaged reservoirs
  • Supports cooling system efficiency in heavy-duty Ford trucks

Installation Notes and Tips

Installation of the Dorman 603-276 reservoir requires no additional mounting hardware as brackets are included. Ensure the old reservoir is fully drained before removal. Align the reservoir using the nine mounting holes for a secure fit. Tighten the pressurized cap to the recommended 16 psi rating to maintain system integrity. Always check for leaks after installation and refill the cooling system with the appropriate coolant mixture.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Ford F-250 Super Duty and F-350 Super Duty vehicles. The 603-276 engine coolant reservoir comes with a limited warranty to protect against defects in material and workmanship, ensuring long-term durability and peace of mind.

BrandDorman
Part Number603-276
Cap IncludedYes
Cap Maximum Pressure Rating16
Cap TypeYes
Capacity6 L
ColorBlack and Clear
Height20.5
Length22
MaterialPlastic
Mounting Brackets IncludedYes
Mounting Hardware IncludedNo
Mounting Hole Quantity9
Package Contents1 Reservoir; 1 Cap
PressurizedYes
ShapeIrregular

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2016FordF-250 Super Duty6.7LV8Left
2016FordF-350 Super Duty6.7LV8Left
2015FordF-250 Super Duty6.7LV8Left
2015FordF-350 Super Duty6.7LV8Left
2014FordF-250 Super Duty6.7LV8Left
2014FordF-350 Super Duty6.7LV8Left
2013FordF-250 Super Duty6.7LV8Left
2013FordF-350 Super Duty6.7LV8Left
2012FordF-250 Super Duty6.7LV8Left
2012FordF-350 Super Duty6.7LV8Left
2011FordF-250 Super Duty6.7LV8Left
2011FordF-350 Super Duty6.7LV8Left

* 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:

9C3Z8101B

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