Dorman Engine Coolant Reservoir Pressurized for 2009-2010 Audi A4 Quattro 603-638

Engine coolant reservoir for 2009-2010 Audi A4 Quattro by Dorman used to replace the factory pressurized reservoir.

Built to meet the manufacturer’s design intent for reliable service.

Key Features

• Pressurized design matching OEM specifications
• Manufactured from quality materials to withstand underhood heat and engine vibration
• Engineered to match fit and function of original part

Benefits

• Ensures consistent coolant pressure for optimal cooling performance
• Durable construction reduces risk of leaks or failure
• Direct-fit design simplifies installation

Application

This part is for Audi A4 owners needing a replacement coolant reservoir after leaks, failures, or routine maintenance.

Fitment Notes

• 2009-2010 Audi A4 Quattro

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.

What’s in the Box

• 1 PC

Item Dimensions

• 11.1in x 9.9in x 6.3in, 2.3lbs