Description

The product is an Engine Expansion Plug made by Dorman/AutoGrade, with a manufacturer part number of 550-001. It is a single plug used in engines to seal off openings and prevent leaks. Engine expansion plugs are essential components in maintaining the integrity and functionality of the engine's cooling system. Dorman is a reputable brand known for producing quality aftermarket automotive parts, making this expansion plug a reliable choice for engine maintenance and repair.