Dorman 603-367 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir for Cadillac, Chevrolet, and GMC

The Dorman 603-367 engine coolant reservoir is designed to provide dependable cooling system performance for select Cadillac, Chevrolet, and GMC vehicles. Engineered with durable plastic and equipped with essential mounting hardware, this reservoir supports efficient coolant management in your vehicle's engine.

• Constructed from durable plastic material for long-lasting use
• Compatible with Cadillac Escalade, Chevrolet Silverado 1500, Sierra 1500, Tahoe, and GMC Yukon models
• Includes mounting brackets and two mounting holes for secure installation
• Pressurized reservoir with a cap rated up to 20 psi for optimal cooling system pressure
• Comes with one coolant reservoir, two hoses, and two reservoir caps for complete replacement
• Dimensions: 17 inches length and 10 inches height, with black and clear color for easy fluid level monitoring

Product Details and Specifications

The Dorman 603-367 engine coolant reservoir is a pressurized plastic tank designed to maintain proper coolant levels and pressure within the cooling system. Its black and clear coloration allows for quick visual inspection of coolant levels. The reservoir measures 17 inches in length and 10 inches in height, fitting securely in the engine bay of compatible vehicles. It includes two mounting holes and brackets to ensure a stable fit. The reservoir cap is included and rated for a maximum pressure of 20 psi, helping to maintain system integrity and prevent coolant loss under pressure. The package also contains two hoses and two reservoir caps, providing a comprehensive replacement solution.

Compatible Vehicles and Applications

This engine coolant reservoir is compatible with the following makes and models:

• Cadillac Escalade
• Chevrolet Silverado 1500
• Chevrolet Sierra 1500
• Chevrolet Tahoe
• GMC Yukon

It is designed to replace the original reservoir in these vehicles, ensuring proper coolant containment and pressure management.

Common Issues Addressed by This Coolant Reservoir

• Coolant leaks due to cracked or damaged reservoirs
• Loss of coolant pressure affecting engine temperature regulation
• Inaccurate coolant level readings from discolored or opaque tanks
• Failed or missing reservoir caps causing coolant evaporation
• Loose or broken mounting brackets leading to reservoir movement

Installation Notes and Tips

Installation of the Dorman 603-367 engine coolant reservoir requires basic mechanical skills. Ensure the engine is cool before beginning replacement. Remove the old reservoir carefully, disconnecting hoses and mounting hardware. Use the included mounting brackets and hardware to secure the new reservoir in place. Verify that the reservoir cap is properly seated and that hoses are firmly connected to prevent leaks. After installation, fill the reservoir with the appropriate coolant and check for leaks during engine operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 603-367 engine coolant reservoir undergoes rigorous quality control to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman's official warranty policy for complete information.