Dorman 555-108 Expansion Plug - Engine Cylinder Head

In stock
SKU: 591|555108
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price $16.16
Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.

Product details

  • SKU 591|555108
  • Barcode 19495556084

Product Description

This engine cylinder head plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

  • Direct replacement - this engine cylinder head plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution - this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction - this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience

Detailed Applications

Year Make Model Configuration Positions Application Notes
1989 Geo Spectrum 2 Required
1988 Chevrolet Spectrum 2 Required
1987 Chevrolet Spectrum 2 Required
1986 Chevrolet Spectrum 2 Required
1985 Chevrolet Spectrum 2 Required

Product Specifications

Closed End Diameter: 0.633 in
Material: Steel
Open End Diameter (in): 0.642 in
Package Contents: Cup Type Plug
Packaging Type: Box
Package Quantity: 10
Brand: Dorman - AutoGrade - Boxed