Dorman OE Solutions Engine Coolant Reservoir for 1992-1998 Audi 603-634

Pressurized coolant reservoir for 1992 to 1998 Audi models designed 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 capable of withstanding underhood heat and engine vibration while maintaining a precise OE fit.

Key Features

• Direct replacement for original equipment part numbers including 4A0121403
• Manufactured from durable materials to resist thermal stress and cracking
• Engineered to match the form, fit, and function of the factory component
• Validated through testing to ensure dependable performance
• Backed by Dorman's century of automotive aftermarket experience

Benefits

• Restores proper cooling system pressure to prevent overheating
• Eliminates coolant leaks caused by aged or damaged plastic tanks
• Ensures a smooth installation with no modifications required
• Reduces the risk of repeat repairs common with inferior aftermarket parts
• Provides long-term reliability for daily driving conditions

Application

Ideal for Audi owners experiencing coolant loss, visible cracks in the stock tank, or failed pressure tests who need a trustworthy direct-fit solution.

Fitment Notes

• Compatible with select 1992-1998 Audi vehicles
• Verify vehicle compatibility using part number 603-634 before purchase

Why Choose Dorman - OE Solutions?

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

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• 9.1in x 9.1in x 6.3in, 1.8lbs