Dorman Autograde Steel Cup Engine Expansion Plug 1-3/4 In for Chevrolet 1958-2000 and GMC 1960-2000 555-034

Steel cup engine expansion plug 1-3/4 inch diameter for Chevrolet 1958-2000 and GMC 1960-2000 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 durable performance in demanding engine environments.

Key Features

• Constructed from high-quality steel for long-lasting durability
• Precise 1-3/4 inch diameter with 0.430 inch height
• Designed to match original equipment form fit and function
• Validated through testing to ensure reliable sealing
• Sold as a convenient 10-piece pack for multiple replacements

Benefits

• Restores proper engine sealing to prevent coolant leaks
• Reduces risk of repeat repairs with robust construction
• Ensures smoother installation with direct-fit design
• Helps maintain optimal engine operating temperature
• Provides cost-effective solution compared to dealer parts
• Backed by over a century of automotive expertise

Application

Ideal for mechanics and DIY enthusiasts repairing cooling system leaks on classic and modern Chevrolet and GMC trucks and cars requiring a 1-3/4 inch core plug replacement.

Fitment Notes

• Compatible with Chevrolet models from 1958 to 2000
• Compatible with GMC models from 1960 to 2000
• Replaces General Motors part numbers 2379621 and 3743389

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 pieces of steel cup engine expansion plugs

Item Dimensions

• 4.9 inches x 3.6 inches x 2.2 inches
• Weight: 0.7 lbs