Dorman 54209 Engine Coolant Reservoir Cap

Reliable Engine Coolant Reservoir Cap for Ford, Lincoln, and Mercury

The Dorman 54209 engine coolant reservoir cap is designed to provide a secure seal for your vehicle's coolant system. Engineered with durable plastic, this black flip-top cap is compatible with various Ford, Lincoln, and Mercury models, ensuring proper fit and function.

• Material: Durable plastic construction
• Diameter: 31.6 mm for precise fit
• Color: Black finish
• Attachment Type: Press on for easy installation
• Type: Flip top design for convenient access
• Non-vented and non-pressurized cap
• Dimensions: 1.438 inches length, 2.25 inches width
• Package includes one coolant reservoir cap

Product Details and Compatibility

The Dorman 54209 coolant reservoir cap is specifically designed for use with Ford, Lincoln, and Mercury vehicles, including popular models such as the Ford Expedition, Explorer, Explorer Sport Trac, F-150, Fusion, as well as the Lincoln Milan, MKZ, Mountaineer, and Navigator. Its 31.6 mm diameter and press-on attachment type ensure a secure fit on the engine coolant reservoir, preventing leaks and maintaining system integrity. The flip-top design allows for easy access when checking or refilling coolant without removing the entire cap.

Common Applications and Problem Resolution

• Prevents coolant leaks caused by worn or damaged caps
• Maintains proper coolant system pressure (non-pressurized system compatibility)
• Helps avoid engine overheating due to coolant loss
• Replaces cracked or broken reservoir caps
• Ensures a secure seal on compatible Ford, Lincoln, and Mercury models

Installation Notes and Tips

Installation of the Dorman 54209 coolant reservoir cap is straightforward due to its press-on attachment type. Ensure the reservoir neck is clean and free of debris before pressing the cap firmly into place. The flip-top design allows for easy coolant level checks without full removal. No special tools are required, but verify compatibility with your specific vehicle model and year before installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 54209 engine coolant reservoir cap undergoes quality inspections to ensure proper fit and function. Please refer to Dorman's warranty policy for specific coverage details.