Dorman Autograde Steel Cup Expansion Plug 2-1/8 Inch for Ford Lincoln Mercury 555-070

Steel cup expansion plug 2-1/8 inch for Ford Lincoln and Mercury engines used to replace worn or leaking factory core plugs.

Built to meet the manufacturer's design intent for reliable service. This plug is constructed from quality steel materials and engineered to match the original equipment form, fit, and function for a secure seal.

Key Features

• Material: High-quality steel construction
• Size: 2-1/8 inch outer diameter
• Height: 0.360 inch
• Type: Cup style expansion plug
• Design: Direct fit replacement for specified applications
• Quantity: Sold as a 10-piece pack

Benefits

• Restores engine sealing to prevent coolant leaks
• Durable steel build resists corrosion and failure
• Precise dimensions ensure a tight and secure fit
• Helps avoid costly engine overheating issues
• Backed by over a century of automotive expertise
• Reduces the risk of repeat repairs compared to inferior parts

Application

Ideal for mechanics and DIY enthusiasts repairing cooling system leaks on vintage and classic Ford, Lincoln, and Mercury vehicles. Commonly used during engine rebuilds or when replacing failed core plugs to maintain proper coolant pressure.

Fitment Notes

• Compatible with select Ford models from 1960 to 2001
• Compatible with select Lincoln models from 1977 to 1992
• Compatible with select Mercury models from 1960 to 2001
• Replaces part numbers C5AZ6026H, C20Z6266A, C20Z6266B, 7HA6266A, 387027C1, and EPS-71

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Built with quality materials and validated through testing to stand up to daily driving demands
• Supported by a team of product experts in the United States
• Offers a smart way to restore your vehicle with confidence and dependable performance

What's in the Box

• 10 Piece set of steel cup expansion plugs

Item Dimensions

• Package Length: 4.9 inches
• Package Width: 3.7 inches
• Package Height: 2.2 inches
• Weight: 0.8 lbs