Dorman 603-428 Engine Coolant Reservoir - Front

Overview of Dorman Engine Coolant Reservoir for Lexus RX330

The Dorman 603-428 engine coolant reservoir is designed specifically for the Lexus RX330, providing a reliable replacement part to maintain your vehicle's cooling system. Constructed from durable plastic, this coolant reservoir ensures proper coolant storage and circulation without pressurization.

• Material: High-quality plastic construction for durability
• Color: Black and white for easy fluid level visibility
• Mounting hardware: Includes mounting brackets but no additional hardware
• Mounting holes: Six mounting holes for secure installation
• Cap type: Flip top cap included for convenient access
• Non-pressurized design suitable for Lexus RX330 cooling systems
• Package contents: One coolant reservoir, one cap, and a fan shroud

Detailed Product Description

The Dorman 603-428 engine coolant reservoir is engineered to meet the specifications of the Lexus RX330 cooling system. Its plastic construction offers resistance to corrosion and heat, while the black and white color scheme allows for quick visual checks of coolant levels. The reservoir comes with a flip top cap that facilitates easy refilling and inspection. Although mounting hardware is not included, the package contains mounting brackets and six mounting holes to ensure a secure fit. This reservoir is designed as a non-pressurized component, matching the original equipment requirements for the Lexus RX330.

Common Applications and Problem Resolution

• Replacement for cracked or leaking coolant reservoirs in Lexus RX330 vehicles
• Solves coolant overflow or underfill issues caused by damaged tanks
• Addresses coolant contamination due to compromised reservoir integrity
• Prevents engine overheating by maintaining proper coolant levels
• Restores proper coolant circulation and system pressure balance

Installation Notes and Tips

• Ensure the engine is cool before removing the old coolant reservoir
• Use the included mounting brackets and align all six mounting holes for a secure fit
• Check the flip top cap for proper sealing after installation
• Refill the reservoir with the recommended coolant type for Lexus RX330
• Inspect hoses and connections for leaks during installation

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-428 engine coolant reservoir undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation for exact warranty terms.