Dorman OE Solutions Engine Coolant Reservoir for 2004-2007 Toyota Highlander 603-326

Non-pressurized engine coolant reservoir for 2004-2007 Toyota Highlander used to replace cracked or leaking factory overflow tanks.

Built to meet the manufacturer's design intent for reliable service, this unit is constructed from quality materials engineered to withstand underhood heat and engine vibration while matching the original part's fit and function.

Key Features

• Direct replacement for original equipment coolant reservoir
• Constructed from durable materials resistant to heat and vibration
• Non-pressurized design matches factory specifications
• Engineered to restore proper coolant system capacity
• Validated through testing for dependable performance

Benefits

• Prevents coolant loss and potential engine overheating
• Restores accurate coolant level monitoring
• Reduces risk of repeat repairs with durable construction
• Ensures smoother installation with direct-fit design
• Extends cooling system lifespan with reliable materials

Application

Ideal for Toyota Highlander owners experiencing cracked, leaking, or damaged factory coolant overflow tanks who need a trustworthy aftermarket solution to maintain proper engine temperature regulation.

Fitment Notes

• Compatible with 2004, 2005, 2006, and 2007 Toyota Highlander models
• Replaces Toyota part numbers 1647020100

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Backed by over 100 years of automotive aftermarket experience
• Built with quality materials to stand up to daily driving demands
• Focus on fit, durability, and dependable performance ensures confidence in every repair

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• 7.2in x 7.2in x 7.9in
• Weight: 1.1lbs