Dorman OE Solutions Engine Coolant Reservoir for 2004-2009 Cadillac SRX and 2005-2011 Cadillac STS 603-141

Pressurized coolant reservoir for 2004-2009 Cadillac SRX and 2005-2011 Cadillac STS used 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 engineered to withstand underhood heat and engine vibration while matching the original part's fit and function.

Key Features

• Direct replacement for original equipment coolant reservoir
• Constructed from durable materials resistant to heat and vibration
• Engineered to match OE form, fit, and function
• Includes cap and sensor port where applicable to original design
• Validated through testing for long-term reliability

Benefits

• Restores proper coolant capacity and system pressure
• Prevents overheating caused by cracked or leaking tanks
• Ensures a smooth installation with no modifications required
• Reduces the risk of repeat repairs common with inferior parts
• Provides a cost-effective solution compared to dealer pricing

Application

Ideal for Cadillac owners experiencing coolant leaks, visible cracks in the factory tank, or low coolant warnings due to a failing reservoir.

Fitment Notes

• Fits 2004-2009 Cadillac SRX models
• Fits 2005-2011 Cadillac STS models
• Replaces General Motors part numbers 25767641, 15882261, 25718303, and 15075118

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Backed by over 100 years of automotive aftermarket experience
• Built with quality materials to stand up to daily driving demands
• Focus on fit, durability, and dependable performance restores vehicle confidence

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• 11.7in x 10.9in x 9.3in
• Weight: 2.5lbs