Dorman Engine Coolant Reservoir Non-Pressurized for 1998-2002 Toyota Corolla 603-421

Engine coolant reservoir for 1998-2002 Toyota Corolla by Dorman used to replace the factory non-pressurized reservoir.

Built to meet the manufacturer’s design intent for reliable service, this replacement engine coolant reservoir is manufactured from quality materials to withstand underhood heat and engine vibration and engineered to match the fit and function of the original part.

Key Features

• Non-Pressurized design
• Matches OE fit and function
• Made from high-quality materials for durability
• Engineered to withstand heat and vibration
• Compatible with 1998-2002 Toyota Corolla
• Part number 603-421
• Interchange parts: Toyota 164700D010, Spectra Premium FRT2018C

Benefits

• Reliable cooling system performance
• Reduced risk of leaks and overheating
• Easy to install as a direct-fit replacement
• Long-lasting durability for daily driving
• Cost-effective alternative to OEM parts
• Peace of mind with proven aftermarket quality

Application

This part is ideal for vehicle owners and repair shops needing to replace a worn or failing coolant reservoir in a Toyota Corolla.

Fitment Notes

• 1998-2002 Toyota Corolla
• Compatible w/: Toyota 164700D010, Spectra Premium FRT2018C

Why Choose Dorman - OE Solutions?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence, thanks to a strong focus on fit, durability, and dependable performance. Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function, helping ensure a smoother installation and reliable results. Built with quality materials and validated through testing, they’re made to stand up to daily driving demands and help reduce the risk of repeat repairs. For a long-lasting fix you can trust, Dorman delivers proven aftermarket solutions that keep your vehicle operating the way it should. Trustworthy design - backed by 100 years of automotive aftermarket experience

What’s in the Box

• 1 PC
• Included items not specified by the manufacturer.

Item Dimensions

• Box Size: 16.2in x 3.4in x 4.7in, 0.9lbs

Important Notice

No additional legal or emissions notes provided.