HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-297 Engine Coolant Reservoir - Front
Part #: 603-297

Dorman 603-297 Engine Coolant Reservoir - Front

Front
⚙️ 8 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: Toyota, Avalon
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Overview of Dorman Engine Coolant Reservoir for Toyota Avalon

The Dorman 603-297 engine coolant reservoir is designed specifically for Toyota Avalon models, providing a reliable replacement for your vehicle's cooling system. Made from durable plastic with a white finish, this reservoir includes a flip-top cap to help maintain proper coolant levels.

Key Features of the Dorman 603-297 Coolant Reservoir

  • Constructed from durable plastic material for long-lasting use
  • White color for easy coolant level visibility
  • Includes one flip-top cap for secure sealing
  • Single mounting hole for straightforward installation
  • Cap included with the reservoir for convenience
  • Non-pressurized design suitable for Toyota Avalon cooling systems
  • Mounting hardware and brackets not included

Detailed Description of the Engine Coolant Reservoir

This Dorman engine coolant reservoir (part number 603-297) is engineered to meet the specifications of Toyota Avalon vehicles. The plastic construction ensures resistance to corrosion and heat, while the white color allows for quick visual checks of coolant levels. The flip-top cap included with the reservoir provides a secure closure without the need for additional tools. Although mounting hardware and brackets are not included, the single mounting hole simplifies the installation process. This reservoir is designed as a non-pressurized component, compatible with the cooling system requirements of the Toyota Avalon.

Common Issues Addressed by This Coolant Reservoir

  • Cracked or leaking coolant reservoir causing coolant loss
  • Damaged or missing reservoir cap leading to coolant contamination
  • Discolored or brittle plastic reservoir affecting coolant monitoring
  • Coolant overflow due to faulty or worn reservoir
  • Replacement needed after overheating or engine cooling system repairs

Installation Notes and Tips

  • Ensure the engine is cool before removing the old reservoir to avoid burns
  • Check the mounting area for any damage or corrosion before installation
  • Use the existing mounting hardware as this product does not include brackets or hardware
  • Fill the reservoir with the appropriate coolant mixture after installation
  • Inspect the flip-top cap for proper sealing to prevent leaks

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 603-297 engine coolant reservoir undergoes quality checks to ensure durability and compatibility with Toyota Avalon models. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.

BrandDorman
Part Number603-297
Cap IncludedYes
Cap TypeFlip Top
ColorWhite
MaterialPlastic
Mounting Brackets IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity1
Package Contents1 Coolant Reservoir; 1 Cap
PressurizedNo

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012ToyotaAvalon3.5LV6Front
2011ToyotaAvalon3.5LV6Front
2010ToyotaAvalon3.5LV6Front
2009ToyotaAvalon3.5LV6Front
2008ToyotaAvalon3.5LV6Front
2007ToyotaAvalon3.5LV6Front
2006ToyotaAvalon3.5LV6Front
2005ToyotaAvalon3.5LV6Front

* 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:

16470AD010FRT2030C

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