Dorman Autograde Steel Cup Engine Expansion Plug 2-1/64 In with 0.650 In Height for General Motors 555-045

Steel cup engine expansion plug for General Motors vehicles used to replace worn or leaking factory core plugs with 2-1/64 inch diameter and 0.650 inch height.

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

Key Features

• Constructed from durable steel for long-lasting resistance to corrosion and pressure
• Precise dimensions of 2-1/64 inches in diameter and 0.650 inches in height
• Designed as a direct replacement for original equipment manufacturer parts
• Compatible with various General Motors engine applications from 1962 to 1989
• Validated through testing to ensure proper fit and function

Benefits

• Stops coolant leaks caused by failed or corroded factory expansion plugs
• Restores engine cooling system integrity to prevent overheating issues
• Reduces the risk of repeat repairs with robust material construction
• Ensures a secure seal that matches OE form and function
• Provides a cost-effective solution for maintaining engine health
• Backed by over a century of automotive expertise for peace of mind

Application

Ideal for mechanics and DIY enthusiasts repairing coolant leaks in older General Motors vehicles requiring a reliable seal for the engine block or cylinder head.

Fitment Notes

• Compatible with General Motors models manufactured between 1962 and 1989
• Replaces General Motors part numbers 3789860 and 555695
• Cross-references with Pioneer part numbers EPC69-25 and EPS-69

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 with strong focus on fit and durability

What's in the Box

• 10 Piece set of steel cup expansion plugs

Item Dimensions

• Package measures 4.9 inches by 3.7 inches by 2.2 inches weighing 0.9 lbs