HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-140 Engine Coolant Reservoir - Front
Part #: 603-140

Dorman 603-140 Engine Coolant Reservoir - Front

Front
⚙️ 5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Corvette
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Overview of Dorman Engine Coolant Reservoir for Chevrolet Corvette

The Dorman 603-140 engine coolant reservoir is designed specifically for Chevrolet Corvette models, providing a reliable solution for your vehicle's cooling system. Made from durable plastic, this reservoir ensures proper coolant storage and pressure management to maintain engine performance.

  • Constructed from high-quality plastic for durability
  • Measures 398 mm in length and 146 mm in height
  • Includes a spring loaded twist cap rated for 18 psi pressure
  • Pressurized reservoir with included cap for secure sealing
  • Features two mounting holes for secure installation
  • Cap and reservoir included; mounting hardware and brackets not included
  • Color: Black and white for easy coolant level visibility

Detailed Product Description

The Dorman 603-140 engine coolant reservoir is engineered to meet the specifications required by Chevrolet Corvette vehicles. Its plastic construction offers resistance to corrosion and heat, ensuring longevity under engine bay conditions. The reservoir measures 398 mm in length and 146 mm in height, fitting precisely within the designated space in the Corvette's engine compartment. The included spring loaded twist cap is pressurized and rated to withstand up to 18 psi, helping maintain optimal coolant system pressure and preventing leaks. The black and white coloration allows for quick visual checks of coolant levels. This reservoir comes with two mounting holes for secure attachment, though mounting hardware and brackets are not included, so ensure compatibility with your vehicle's existing setup.

Compatible Applications and Common Issues Addressed

  • Replacement for cracked or leaking coolant reservoirs in Chevrolet Corvette models
  • Solves coolant overflow or underfill problems caused by damaged tanks
  • Restores proper pressure regulation in the cooling system with the included cap
  • Prevents engine overheating due to coolant loss or reservoir failure
  • Addresses coolant contamination issues by providing a sealed, pressurized container

Installation Notes and Tips

  • Verify the part number 603-140 matches your Chevrolet Corvette model year and engine configuration
  • Ensure the existing mounting brackets and hardware are compatible, as these are not included
  • Carefully remove the old reservoir and drain coolant safely before installation
  • Install the reservoir using the two mounting holes and secure firmly to avoid vibrations
  • Check the spring loaded twist cap for proper sealing after installation to maintain system pressure

Quality Assurance and Warranty Information

Dorman manufactures the 603-140 engine coolant reservoir to meet or exceed OEM standards for fit, form, and function. The plastic material and pressurized cap are tested for durability and performance under typical operating conditions. This product includes the coolant reservoir and cap, both designed to provide reliable service in Chevrolet Corvette vehicles. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandDorman
Part Number603-140
Cap IncludedYes
Cap Maximum Pressure Rating18
Cap TypeSpring Loaded Twist
ColorBlack/White
Height146
Length398
MaterialPlastic
Mounting Brackets IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Package Contents1 Coolant Reservoir; 1 Cap
PressurizedYes

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004ChevroletCorvette5.7LV8FrontPressurized
2003ChevroletCorvette5.7LV8FrontPressurized
2002ChevroletCorvette5.7LV8FrontPressurized
2001ChevroletCorvette5.7LV8FrontPressurized
2000ChevroletCorvette5.7LV8FrontPressurized

* 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:

10430189FRT1225C

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