Dorman Autograde Steel Cup Expansion Plug 50mm with 0.528in Height for Ford and Mazda 555-105

Steel cup expansion plug 50mm with 0.528in height for Ford and Mazda 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 to ensure a secure seal and long-lasting durability in demanding engine environments.

Key Features

• Constructed from durable steel for corrosion resistance
• Precise 50mm diameter with 0.528in height specification
• Engineered to match original equipment form and fit
• Validated by product experts for consistent performance
• Sold as a 10-piece pack for multiple replacements

Benefits

• Prevents coolant leaks caused by failed expansion plugs
• Restores engine sealing integrity for safe operation
• Reduces risk of repeat repairs with quality materials
• Ensures smoother installation with direct-fit design
• Provides cost-effective solution for fleet or shop use

Application

Ideal for automotive technicians and DIY mechanics repairing cooling system leaks on vintage Ford and Mazda vehicles requiring a 50mm steel core plug.

Fitment Notes

• Compatible with select Ford models from 1972 to 1984
• Compatible with select Mazda models from 1977 to 1998
• Verify engine block measurements before installation

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Backed by a team of product experts in the United States and over a century of automotive experience
• Built with quality materials and validated through testing to stand up to daily driving demands

What's in the Box

• 10 Piece Set of Steel Cup Expansion Plugs

Item Dimensions

• 4.9in x 3.7in x 2.2in
• Weight: 0.9lbs