Dorman 603-100 Engine Coolant Reservoir - Front

Reliable Engine Coolant Reservoir for GM Trucks and SUVs

The Dorman 603-100 engine coolant reservoir is designed to provide a durable and efficient solution for your vehicle's cooling system. Compatible with a range of Cadillac, Chevrolet, and GMC models, this reservoir ensures proper coolant storage and circulation to help maintain optimal engine temperature.

• Constructed from durable white plastic for long-lasting performance
• Includes mounting brackets and a flip-top cap for secure installation and easy access
• Features three mounting holes for a stable fit
• Cap included with flip-top design for convenient coolant refilling
• Non-pressurized reservoir suitable for specific GM truck and SUV models

Product Details and Specifications

The Dorman 603-100 engine coolant reservoir is made from high-quality plastic material in white, designed to withstand the heat and pressure conditions typical in engine compartments. It comes with mounting brackets and three mounting holes to ensure a secure and precise fit. The included flip-top cap allows for easy coolant level checks and refills without the need to remove the entire cap assembly. This reservoir is non-pressurized, matching the original equipment specifications for the compatible vehicles.

Compatible Vehicles and Applications

This engine coolant reservoir is compatible with various Cadillac, Chevrolet, and GMC trucks and SUVs, including models such as the Chevrolet Blazer, Silverado 2500 and 3500, Suburban 1500, Tahoe, and GMC Sierra variants like C1500, C2500, K1500, K2500, and K3500. It also fits Cadillac Escalade and Yukon models, ensuring broad coverage for GM full-size trucks and SUVs.

• Replaces worn or cracked coolant reservoirs causing leaks
• Prevents coolant overflow and engine overheating
• Restores proper coolant level monitoring and containment
• Eliminates coolant contamination from damaged or missing caps
• Addresses mounting issues with included brackets and hardware

Installation Notes and Tips

Installation of the Dorman 603-100 reservoir requires removal of the old coolant tank and securing the new reservoir using the included mounting brackets and three mounting holes. Ensure the flip-top cap is properly seated to prevent leaks. It is recommended to inspect hoses and clamps during installation and replace if necessary to maintain system integrity.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and fitment. The 603-100 engine coolant reservoir undergoes quality checks to ensure durability and compatibility. Please refer to Dorman's warranty policy for specific coverage details.