HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-141 Engine Coolant Reservoir - Front
Part #: 603-141

Dorman 603-141 Engine Coolant Reservoir - Front

Front
⚙️ 19 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, SRX and STS
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Overview of Dorman Engine Coolant Reservoir for Cadillac SRX and STS

The Dorman 603-141 engine coolant reservoir is designed specifically for Cadillac SRX and STS models. This clear plastic coolant reservoir includes a spring loaded twist cap and is engineered to maintain proper coolant levels in pressurized cooling systems.

  • Material: Durable clear plastic for easy fluid level monitoring
  • Dimensions: 180mm length and 130mm height
  • Cap: Spring loaded twist type with a maximum pressure rating of 15 psi
  • Pressurized reservoir compatible with Cadillac SRX and STS cooling systems
  • Includes one coolant reservoir and one cap; mounting hardware and brackets not included
  • Two mounting holes for secure installation

Detailed Product Description

The Dorman 603-141 engine coolant reservoir is constructed from clear plastic, allowing for quick visual inspection of coolant levels without removal. Measuring 180mm in length and 130mm in height, this reservoir fits precisely within the engine bay of Cadillac SRX and STS vehicles. It features a spring loaded twist cap designed to maintain system pressure up to 15 psi, ensuring optimal coolant flow and preventing overheating. The reservoir is pressurized, which is essential for modern cooling systems to function efficiently. While the package includes the reservoir and cap, mounting hardware and brackets are not provided, but the reservoir includes two mounting holes for straightforward attachment.

Common Applications and Issues Addressed

  • Replacement of cracked or leaking coolant reservoirs in Cadillac SRX and STS
  • Restoring proper coolant pressure to prevent engine overheating
  • Resolving coolant loss due to damaged or faulty reservoirs
  • Maintaining coolant system integrity in pressurized cooling setups
  • Ensuring accurate coolant level monitoring with a clear reservoir design

Installation Notes and Tips

  • Verify compatibility with Cadillac SRX and STS models before installation
  • Ensure the engine is cool before removing the old reservoir to avoid injury
  • Use the existing mounting hardware or source appropriate brackets as they are not included
  • Check the spring loaded twist cap for proper sealing after installation
  • Inspect hoses connected to the reservoir for wear or damage during replacement

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit and function. The 603-141 engine coolant reservoir undergoes quality checks to ensure durability and performance in Cadillac SRX and STS vehicles. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandDorman
Part Number603-141
Cap IncludedYes
Cap Maximum Pressure Rating15
Cap TypeSpring Loaded Twist
ColorClear
Height130
Length180
MaterialPlastic
Mounting Brackets IncludedNo
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Package Contents1 Coolant Reservoir; 1 Cap
PressurizedYes

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011CadillacSTS3.6LV6N/A
2010CadillacSTS3.6LV6N/A
2009CadillacSRX3.6LV6N/A
2009CadillacSTS3.6LV6N/A
2008CadillacSRX3.6LV6N/A
2008CadillacSTS3.6LV6N/A
2007CadillacSRX3.6LV6N/A
2007CadillacSTS3.6LV6N/A
2006CadillacSRX4.6LV8Front
2006CadillacSRX3.6LV6Front
2006CadillacSTS4.4LV8Front
2006CadillacSTS4.6LV8Front
2006CadillacSTS3.6LV6Front
2005CadillacSRX4.6LV8Front
2005CadillacSRX3.6LV6Front
2005CadillacSTS4.6LV8Front
2005CadillacSTS3.6LV6Front
2004CadillacSRX4.6LV8Front
2004CadillacSRX3.6LV6Front

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15075118FRT1229C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.