Dorman Engine Coolant Reservoir Pressurized for 2000-2005 Cadillac DeVille, 2003-2001 Oldsmobile Aurora, 2005-2004 Pontiac Bonneville 603-122

Engine Coolant Reservoir for 2000-2005 Cadillac DeVille, 2003-2001 Oldsmobile Aurora, 2005-2004 Pontiac Bonneville by Dorman replaces the factory reservoir to maintain coolant pressure.

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

Key Features

• Pressurized design to match OEM specifications
• Manufactured from quality materials for heat and vibration resistance
• Engineered to fit original part dimensions

Benefits

• Maintains proper coolant pressure for engine cooling
• Resists underhood heat and vibration stresses
• Easy direct-fit installation without modification

Application

This part is for owners of the specified Cadillac, Oldsmobile, and Pontiac models needing a reliable replacement reservoir.

Fitment Notes

• 2000-2005 Cadillac DeVille
• 2003-2001 Oldsmobile Aurora
• 2005-2004 Pontiac Bonneville

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

• 14.4in x 10.8in x 8.8in, 3.3lbs