Dorman 555-023 Engine Expansion Plug

Overview of Dorman Engine Core Plug 555-023

The Dorman 555-023 engine core plug is designed for reliable sealing in engine blocks of select Ford and Jaguar vehicles. Constructed from durable steel, this cup-type expansion plug ensures a secure fit and long-lasting performance in applications such as the Ford F-100 and Jaguar XJ6.

• Made from corrosion-resistant steel for durability
• Cup-type design for effective sealing
• Maximum diameter: 1.26 inches; minimum diameter: 1.249 inches
• Compatible with Ford F-100 and Jaguar Vanden Plas, XJ6 models
• Sold as a single expansion plug (package contents)

Detailed Product Description

The Dorman 555-023 engine core plug is engineered to fit precisely within the engine block openings of specific Ford and Jaguar models, including the Ford F-100 and Jaguar Vanden Plas and XJ6. Its steel construction provides resistance to heat and corrosion, which is critical for maintaining engine integrity over time. The cup-type design allows the plug to expand and create a tight seal, preventing coolant or oil leaks that could compromise engine performance. With a diameter range between 1.249 and 1.26 inches, this plug meets exacting specifications to ensure proper fitment and function.

Common Applications and Problem Solving

• Sealing core holes in engine blocks to prevent fluid leaks
• Replacing worn or corroded expansion plugs in Ford F-100 engines
• Restoring proper sealing in Jaguar Vanden Plas and XJ6 cooling systems
• Preventing coolant loss and potential engine overheating
• Maintaining engine block integrity during rebuilds or repairs

Installation Notes and Tips

• Ensure the engine block core hole is clean and free of debris before installation
• Use appropriate tools to press the plug evenly into place without damaging the cup-type edges
• Verify the plug diameter matches the engine block specifications (1.249 to 1.26 inches)
• Inspect surrounding areas for corrosion or damage that may affect sealing
• Consult vehicle service manuals for torque and installation procedures specific to Ford F-100 or Jaguar models

Quality Assurance and Warranty

Dorman manufactures the 555-023 engine core plug to meet industry standards for material quality and dimensional accuracy. The steel construction is tested for durability under typical engine operating conditions. While specific warranty details may vary, Dorman products generally include coverage against manufacturing defects to ensure customer confidence in fit and function.