Dorman 550-028 Engine Expansion Plug

Durable Steel Engine Core Plugs for Reliable Sealing

The Dorman 550-028 engine core plugs are designed to provide a secure and long-lasting seal for engine block openings. Made from steel with a concave design, these plugs ensure a tight fit to prevent leaks and maintain engine integrity.

• Constructed from durable steel material for strength and corrosion resistance
• Concave type design for effective sealing in engine block cores
• Consistent 2-inch diameter for precise fitment
• Package includes 10 expansion plugs for multiple repairs

Detailed Description of Dorman 550-028 Engine Core Plugs

These engine core plugs from Dorman are engineered to replace worn or damaged expansion plugs in various engine blocks. The steel construction offers enhanced durability compared to traditional materials, reducing the risk of corrosion and failure over time. With a uniform 2-inch diameter and concave shape, the plugs fit securely into the engine block openings, helping to maintain proper engine pressure and fluid containment. The package contains 10 plugs, making it suitable for comprehensive engine maintenance or multiple vehicle repairs.

Common Applications and Issues Addressed

• Sealing engine block core holes after casting or machining
• Replacing corroded or leaking expansion plugs in older engines
• Preventing coolant or oil leaks from engine block openings
• Maintaining engine pressure and preventing contamination
• Supporting engine rebuilds or overhauls requiring new core plugs

Installation Notes and Tips for Engine Core Plugs

• Ensure the engine block core hole is clean and free of debris before installation
• Use appropriate tools to press the plug evenly into the opening without damaging the plug or block
• Verify the 2-inch diameter matches the engine block specifications for proper fitment
• Inspect surrounding areas for corrosion or damage that may affect sealing
• Consult vehicle-specific repair manuals for torque and installation procedures

Quality Assurance and Warranty Information

Dorman engine core plugs are manufactured to meet industry standards for durability and fitment. The steel material and precise manufacturing process ensure consistent performance in automotive engine applications. While specific warranty details for part number 550-028 are not provided, Dorman typically offers limited warranties covering defects in materials and workmanship. For vehicle-specific compatibility, consult manufacturer guidelines or a professional technician.