Dorman Autograde Steel Cup Expansion Plug 5/8 Inch with 0.220 Inch Height for Chevrolet and Geo Spectrum 555-108

Steel cup expansion plug 5/8 inch for 1985 to 1989 Chevrolet Spectrum and Geo Spectrum used to replace worn or leaking engine cylinder head plugs.

Built to meet the manufacturer's design intent for reliable service, this plug is constructed from quality steel to ensure durability and a secure seal within the engine block.

Key Features

• Constructed from durable steel for long-lasting performance
• Dimensions include 5/8 inch diameter and 0.220 inch height
• Designed as a direct replacement for original equipment parts
• Compatible with specific Chevrolet and Geo Spectrum model years
• Part number 555-108 ensures accurate identification
• Backed by over a century of automotive industry experience

Benefits

• Restores engine integrity by sealing coolant or oil passages effectively
• Prevents leaks that can lead to engine overheating or damage
• Direct fit design simplifies installation and reduces labor time
• High-quality materials reduce the risk of repeat repairs
• Provides a trustworthy solution for maintaining vehicle reliability

Application

Ideal for mechanics and DIY enthusiasts repairing engine leaks on late 1980s Chevrolet Spectrum and Geo Spectrum vehicles requiring a precise 5/8 inch expansion plug.

Fitment Notes

• Fits 1985 to 1988 Chevrolet Spectrum
• Fits 1989 Geo Spectrum
• Verify engine specifications before purchase to ensure correct sizing

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

What's in the Box

• 10 Piece set of steel cup expansion plugs

Item Dimensions

• Package measures 3.2 inches by 2.4 inches by 1.5 inches
• Total package weight is 0.1 lbs