Dorman 555-042 Engine Expansion Plug

Reliable Steel Engine Core Plug for Various Vehicle Applications

The Dorman 555-042 engine core plug is designed to provide a durable and precise seal for engine block openings. Crafted from steel with a cup-type design, this expansion plug ensures a secure fit and reliable performance in automotive engine repairs.

• Constructed from high-quality steel for strength and durability
• Cup-type expansion plug design for effective sealing
• Maximum diameter of 1.984 inches and minimum diameter of 1.974 inches for precise fitment
• Part number 555-042 for easy identification and replacement

Detailed Description of the Dorman 555-042 Engine Core Plug

This engine core plug from Dorman is engineered to fit engine block openings requiring a diameter close to 1.98 inches. The steel material offers resistance to corrosion and wear, making it suitable for long-term use in various automotive engines. The cup-type design allows the plug to expand and create a tight seal within the engine block, preventing coolant or oil leaks. While this part does not specify exact vehicle makes or models, it is commonly used in engine repairs where a steel expansion plug of this size is required.

Common Applications and Issues Addressed

• Sealing core holes in engine blocks after casting
• Preventing coolant leaks from engine block openings
• Replacing worn or corroded engine core plugs
• Maintaining engine block integrity during rebuilds or repairs
• Addressing oil leaks related to faulty core plugs

Installation Notes and Tips for Engine Core Plug 555-042

Before installation, ensure the engine block opening is clean and free of debris or corrosion. The plug should be carefully aligned and pressed into place using appropriate tools to avoid damage. It is important to verify the diameter of the core hole matches the plug dimensions (1.974 to 1.984 inches) for a proper fit. Applying a light coating of sealant may be recommended depending on the engine manufacturer's specifications.

Quality Assurance and Warranty Information

Dorman manufactures this engine core plug to meet industry standards for durability and fitment. The steel construction provides reliable performance under typical engine operating conditions. While specific warranty details are not provided, Dorman parts generally come with a limited warranty against defects in material and workmanship.