Dorman Products

Dorman 555-027.1 Expansion Plug

In stock
SKU: 591|5550271
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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
$12.19
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|5550271
  • Barcode 19495794479

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Description

Product Description

This engine expansion 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 expansion 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
1985 Chevrolet S10 L4 119 1.9L Rear 1.50 In.; 1 Required
1985 GMC S15 L4 119 1.9L Rear 1.50 In.; 1 Required
1984 Chevrolet S10 L4 119 1.9L Rear 1.50 In.; 1 Required
1984 Chevrolet S10 Blazer L4 119 1.9L Rear 1.50 In.; 1 Required
1984 GMC S15 L4 119 1.9L Rear 1.50 In.; 1 Required
1984 GMC S15 Jimmy L4 119 1.9L Rear 1.50 In.; 1 Required
1983 Chevrolet S10 L4 119 1.9L Rear 1.50 In.; 1 Required
1983 Chevrolet S10 Blazer L4 119 1.9L Rear 1.50 In.; 1 Required
1983 Fiat 124 1.50 In.; 5 Required
1983 Fiat X-1/9 L4 122 2.0L (1997cc) 1.50 In.; 5 Required
1983 GMC S15 L4 119 1.9L Rear 1.50 In.; 1 Required
1983 GMC S15 Jimmy L4 119 1.9L Rear 1.50 In.; 1 Required
1982 Chevrolet S10 L4 119 1.9L Rear 1.50 In.; 1 Required
1982 Fiat 124 1.50 In.; 5 Required
1982 GMC S15 L4 119 1.9L Rear 1.50 In.; 1 Required
1981 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1981 Fiat 124 1.50 In.; 5 Required
1981 Fiat Brava 1.50 In.; 5 Required
1980 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1980 Fiat 124 1.50 In.; 5 Required
1980 Fiat Brava 1.50 In.; 5 Required
1980 Fiat Strada 2 Required; 1.50 In.
1980 Fiat X-1/9 2 Required; 1.50 In.
1979 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1979 Fiat 124 1.50 In.; 5 Required
1979 Fiat 128 2 Required; 1.50 In.
1979 Fiat Brava 1.50 In.; 5 Required
1979 Fiat Strada 2 Required; 1.50 In.
1979 Fiat X-1/9 2 Required; 1.50 In.
1978 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1978 Fiat 124 1.50 In.; 5 Required
1978 Fiat 128 2 Required; 1.50 In.
1978 Fiat 131 1.50 In.; 5 Required
1978 Fiat X-1/9 2 Required; 1.50 In.
1977 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1977 Fiat 124 1.50 In.; 5 Required
1977 Fiat 128 2 Required; 1.50 In.
1977 Fiat 131 1.50 In.; 5 Required
1977 Fiat X-1/9 2 Required; 1.50 In.
1976 Buick Opel Rear 1.50 In.; 1 Required
1976 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1976 Fiat 124 1.50 In.; 5 Required
1976 Fiat 128 2 Required; 1.50 In.
1976 Fiat 131 1.50 In.; 5 Required
1976 Fiat X-1/9 2 Required; 1.50 In.
1975 Chevrolet LUV L4 111 1.8L Rear 1.50 In.; 1 Required
1975 Fiat 124 1.50 In.; 5 Required
1975 Fiat 128 2 Required; 1.50 In.
1975 Fiat 131 1.50 In.; 5 Required
1975 Fiat X-1/9 2 Required; 1.50 In.
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Product Specifications

Describe Type: Cup Type
Material: Steel
Maximum Diameter: 1.514 in
Minimum Diameter: 1.5 in
Package Contents: Expansion Plug
Package Quantity: 1
Brand: Dorman - AutoGrade - Bagged
Packaging Type: Bag

OE Numbers

DIRECT OE CROSS
94023985 GENERAL MOTORS