ACDelco Coolant Recovery Reservoir Cap

The ACDelco Coolant Recovery Reservoir Cap (also called a coolant reservoir cap, overflow tank cap, or expansion tank cap) seals the engine cooling system's recovery reservoir. It also helps keep system pressure within the range the manufacturer specifies.

Key Features:

• Seals the coolant recovery reservoir to help prevent coolant leaks and loss
• Built-in pressure relief valve helps regulate cooling system pressure
• Helps coolant move between the radiator and reservoir as the engine heats and cools
• Designed to meet the fit and function requirements of the original application
• Backed by ACDelco, a trusted name in automotive replacement parts

A worn or damaged reservoir cap can cause coolant loss, pressure problems and overheating. Replacing it is a simple, low-cost way to help keep the cooling system working as it should. Choose the specific part number that matches your application.