Dorman Autograde Steel Cup Expansion Plug 1.25 Inch with 0.400 Inch Height for Dodge Ford GMC Jaguar 555-023

Steel cup expansion plug 1.25 inch diameter with 0.400 inch height for Dodge Ford GMC and Jaguar engines used to replace worn or leaking factory core plugs.

Built to meet the manufacturer's design intent for reliable service. This engine expansion plug is constructed from quality steel materials and engineered to match the fit and function of the original part on specified vehicles, ensuring a secure seal against coolant leaks.

Key Features

• Constructed from durable steel for long-lasting performance
• Precise 1.25 inch outer diameter with 0.400 inch height
• Designed to match OE form fit and function
• Validated through testing for daily driving demands
• Backed by over a century of automotive experience
• Compatible with multiple legacy vehicle platforms

Benefits

• Restores engine cooling system integrity by sealing leaks
• Reduces the risk of repeat repairs with dependable materials
• Ensures smoother installation with direct-fit design
• Helps maintain proper engine operating temperature
• Provides a cost-effective solution for vintage and classic cars
• Delivers confidence with trustworthy quality standards

Application

Ideal for mechanics and DIY enthusiasts restoring older vehicles from Dodge Ford GMC and Jaguar that require replacement of frozen or corroded block plugs. Commonly used during engine rebuilds or cooling system repairs to prevent antifreeze loss.

Fitment Notes

• Compatible with select Dodge models from 1959 to 1968
• Compatible with select Ford models from 1982 to 1983
• Compatible with select GMC models from 1954 to 1962
• Compatible with select Jaguar models from 1985 to 1987
• Verify vehicle compatibility using part number 555-023 before purchase

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form fit and function helping ensure a smoother installation and reliable results

What's in the Box

• 10 Piece Set of Steel Cup Expansion Plugs

Item Dimensions

• 3.7 inches x 2.4 inches x 2.2 inches
• Weight: 0.4 lbs