Dorman 555-002 Engine Expansion Plug

Overview of Dorman Engine Core Plug 555-002

The Dorman 555-002 engine core plug is designed for reliable sealing in engine blocks of select Jeep and Lincoln vehicles. Constructed from durable steel, this cup-type expansion plug ensures a secure fit and long-lasting performance in models such as the Jeep Cherokee, Comanche, Wagoneer, and Lincoln Continental and Mark VII.

• Material: Steel for strength and corrosion resistance
• Type: Cup type expansion plug for effective sealing
• Maximum Diameter: 0.464 inches
• Minimum Diameter: 0.469 inches
• Compatible with Jeep Cherokee, Comanche, Wagoneer and Lincoln Continental, Mark VII
• Part Number: 555-002 for precise identification

Detailed Product Description

The Dorman 555-002 engine core plug is engineered to fit specific engine block openings with diameters ranging between 0.464 and 0.469 inches. Its steel construction provides durability and resistance to engine fluids and heat, making it suitable for long-term use in demanding automotive environments. The cup-type design allows for a tight seal, preventing coolant or oil leaks that can compromise engine performance. This expansion plug is an essential component for maintaining the integrity of the engine block in Jeep Cherokee, Comanche, Wagoneer, and Lincoln Continental and Mark VII models.

Common Applications and Problem Solving

• Sealing core holes in engine blocks to prevent fluid leaks
• Replacing worn or corroded engine core plugs
• Preventing coolant loss and engine overheating
• Maintaining engine block pressure and integrity
• Addressing oil leaks related to faulty core plugs

Installation Notes and Tips

• Ensure the engine block core hole is clean and free of debris before installation
• Verify the diameter of the core hole matches the plug dimensions (0.464 to 0.469 inches)
• Use appropriate tools to press the plug evenly into place without damaging the cup-type seal
• Inspect the plug after installation for a secure fit and absence of leaks

Quality Assurance and Warranty

Dorman engine core plugs are manufactured to meet or exceed OEM specifications for fit and function. The steel material and precise manufacturing tolerances contribute to reliable sealing performance. While specific warranty details may vary, Dorman typically offers coverage against defects in material and workmanship to ensure customer confidence in the 555-002 engine core plug.