Dorman Autograde Steel Cup Engine Expansion Plug 1/2 Inch with 0.300 Inch Height for 1975 GMC Sprint 555-005

Steel cup engine expansion plug 1/2 inch for 1975 GMC Sprint 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
• Dimensions include 1/2 inch diameter and 0.300 inch height
• Designed as a direct replacement for original equipment
• Engineered to match OE form, fit, and function
• Validated through testing for daily driving demands
• Sold as a 10-piece pack for multiple replacements

Benefits

• Restores proper sealing to prevent coolant or oil leaks
• Reduces the risk of repeat repairs with trustworthy quality
• Ensures smoother installation with precise fitment
• Helps maintain optimal engine operating temperatures
• Provides a cost-effective solution for engine maintenance
• Backed by over a century of automotive experience

Application

Ideal for mechanics and DIY enthusiasts repairing engine blocks on classic vehicles like the 1975 GMC Sprint where original expansion plugs have failed or corroded.

Fitment Notes

• Specifically listed for 1975 GMC Sprint models
• Verify engine block requirements before installation
• Compatible with General Motors part number 3701638

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 a smart way to restore your vehicle with confidence in fit and durability

What's in the Box

• 10 Piece set of steel cup expansion plugs

Item Dimensions

• 3.2 inches x 2.4 inches x 1.5 inches
• Weight: 0.1 lbs