Dorman Autograde Steel Cup Engine Expansion Plug 1-49/64 In for Ford GM Navistar 555-036

Steel cup engine expansion plug 1-49/64 inch diameter for Ford General Motors and Navistar vehicles used to replace worn or leaking factory core plugs.

Built to meet the manufacturer's design intent for reliable service using quality steel materials engineered for dependable performance in demanding engine environments.

Key Features

• Constructed from durable steel for long-lasting sealing power
• Precise diameter of 1-49/64 inches with 0.380 inch height
• Direct replacement for original equipment expansion plugs
• Compatible with select Ford General Motors and Navistar engines
• Backed by over a century of automotive industry experience
• Validated through testing to ensure proper fit and function

Benefits

• Stops coolant leaks caused by failed or corroded core plugs
• Restores engine cooling system integrity and pressure
• Reduces risk of repeat repairs with robust material construction
• Ensures smoother installation with OE-matching dimensions
• Provides trustworthy quality supported by US-based product experts
• Helps maintain optimal engine operating temperature

Application

Ideal for mechanics and DIY enthusiasts repairing coolant leaks in older Ford General Motors and Navistar engines requiring a 1-49/64 inch steel cup plug.

Fitment Notes

• Fits Ford models from 1946 to 1994
• Fits General Motors models from 1964 to 1984
• Fits Navistar models from 1968 to 1980
• Replaces part numbers including 376043S 94021815 and E7DZ6026B

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
• Offers proven aftermarket solutions that keep vehicles operating the way they should

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: 0.7 lbs