Dorman OE Solutions Engine Coolant Reservoir for 2009-2018 Volkswagen 603-454

Pressurized coolant reservoir for 2009-2018 Volkswagen models used to replace cracked or leaking factory expansion 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 maintaining a precise fit.

Key Features

• Direct replacement for original equipment part numbers 5U0121407 and 3B0121321
• Manufactured from durable materials resistant to thermal stress and vibration
• Engineered to match OE form, fit, and function for seamless installation
• Pressurized design maintains proper cooling system integrity
• Backed by Dorman's century of automotive aftermarket experience

Benefits

• Restores cooling system pressure to prevent overheating issues
• Eliminates leaks caused by cracked or degraded plastic tanks
• Reduces the risk of repeat repairs with robust construction
• Ensures compatible fitment without modification during install
• Provides a cost-effective solution compared to dealer parts

Application

Ideal for Volkswagen owners experiencing coolant loss, visible cracks in the factory tank, or failed pressure tests who need a dependable direct-fit replacement.

Fitment Notes

• Compatible with select 2009-2018 Volkswagen vehicles
• Verify specific model compatibility using part number 603-454 before purchase

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function for smoother installation and reliable results.

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• 7.7in x 7.7in x 8.1in, 1.4lbs