Dorman 54218 Engine Coolant Reservoir Cap

Reliable Engine Coolant Reservoir Cap for GM and Saab Vehicles

The Dorman 54218 Engine Coolant Reservoir Cap is designed to maintain proper pressure and ventilation in your vehicle's cooling system. Compatible with a wide range of Buick, Cadillac, Chevrolet, GMC, and Saab models, this cap ensures efficient coolant containment and system performance.

Key Features of the Dorman 54218 Coolant Cap

• Constructed from durable black plastic for corrosion resistance
• Threaded attachment type with a twist design for secure fitment
• Diameter of 60.9 mm and dimensions of 2.4 inches in length and width
• Pressurized and vented cap to maintain system pressure up to 20 psi
• Compatible with multiple GM and Saab vehicles including Chevrolet Silverado, Cadillac Escalade, Buick Enclave, and Saab 9-5

Detailed Product Description

The Dorman 54218 Engine Coolant Reservoir Cap is engineered to meet the specifications required by various GM and Saab models. Its plastic construction offers resistance to heat and corrosion, while the threaded, twist-on design provides a secure and leak-free seal. The cap is vented and pressurized, allowing it to maintain a maximum pressure rating of 20 psi, which helps prevent coolant loss and overheating. Measuring 2.4 inches in both length and width with a diameter of 60.9 mm, this cap fits precisely on the coolant reservoir to ensure optimal system performance.

Common Applications and Issues Addressed

• Prevents coolant leaks caused by worn or damaged reservoir caps
• Maintains proper pressure to avoid engine overheating
• Ensures correct venting to reduce air pockets in the cooling system
• Replaces cracked or broken caps that compromise coolant containment
• Restores cooling system integrity for Buick, Cadillac, Chevrolet, GMC, and Saab vehicles

Installation Notes and Tips

• Ensure the engine is cool before removing the old coolant reservoir cap
• Clean the reservoir neck to remove debris or corrosion before installation
• Thread the Dorman 54218 cap on firmly until it is fully seated and secure
• Check for leaks after installation by running the engine and monitoring coolant levels

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 54218 Engine Coolant Reservoir Cap undergoes rigorous quality control to ensure proper fit and function. Please refer to Dorman's warranty policy for specific coverage details.