Dorman Products

Dorman 555-019 Expansion Plug

In stock
SKU: 591|555019
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
$17.38
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|555019
  • Barcode 19495555193

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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
1995 Oldsmobile 88 Rear 4 Required; 1.125 In.
1992 Toyota Cressida 1 Required; 1.125 In.
1992 Toyota Supra 1 Required; 1.125 In.
1991 Toyota Cressida 1 Required; 1.125 In.
1991 Toyota Supra 1 Required; 1.125 In.
1990 Toyota Cressida 1 Required; 1.125 In.
1990 Toyota Supra 1 Required; 1.125 In.
1989 Toyota Cressida 1 Required; 1.125 In.
1989 Toyota Supra 1 Required; 1.125 In.
1988 Buick Century V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1988 Buick Electra Rear 4 Required; 1.125 In.
1988 Buick LeSabre V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1988 Buick Reatta Rear 4 Required; 1.125 In.
1988 Buick Riviera Rear 4 Required; 1.125 In.
1988 Buick Skylark V6 181 3.0L Rear 4 Required; 1.125 In.
1988 Oldsmobile 98 Rear 4 Required; 1.125 In.
1988 Oldsmobile Cutlass Calais V6 181 3.0L Rear 4 Required; 1.125 In.
1988 Oldsmobile Cutlass Ciera V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1988 Oldsmobile Cutlass Cruiser V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1988 Oldsmobile Delta 88 Rear 4 Required; 1.125 In.
1988 Oldsmobile Toronado Rear 4 Required; 1.125 In.
1988 Pontiac Bonneville Rear 4 Required; 1.125 In.
1988 Toyota Supra 1 Required; 1.125 In.
1987 Buick Century V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Buick Electra V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Buick LeSabre V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Buick Regal V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Buick Riviera Rear 4 Required; 1.125 In.
1987 Buick Skylark V6 181 3.0L Rear 4 Required; 1.125 In.
1987 Buick Somerset V6 181 3.0L Rear 4 Required; 1.125 In.
1987 Oldsmobile 98 Rear 4 Required; 1.125 In.
1987 Oldsmobile Calais V6 181 3.0L Rear 4 Required; 1.125 In.
1987 Oldsmobile Cutlass Ciera V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Oldsmobile Cutlass Cruiser V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Oldsmobile Cutlass Salon V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Oldsmobile Cutlass Supreme V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Oldsmobile Delta 88 Rear 4 Required; 1.125 In.
1987 Oldsmobile Toronado Rear 4 Required; 1.125 In.
1987 Pontiac Bonneville Rear 4 Required; 1.125 In.
1987 Pontiac Grand Am V6 181 3.0L Rear 4 Required; 1.125 In.
1987 Pontiac Grand Prix V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1987 Toyota Supra 1 Required; 1.125 In.
1986 Buick Century V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1986 Buick Electra V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1986 Buick LeSabre V6 181 3.0L Rear 4 Required; 1.125 In.
1986 Buick LeSabre V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1986 Buick Regal V6 231 3.8L (3800cc) Rear 4 Required; 1.125 In.
1986 Buick Riviera Rear 4 Required; 1.125 In.
1986 Buick Skylark V6 181 3.0L Rear 4 Required; 1.125 In.
1986 Buick Somerset V6 181 3.0L Rear 4 Required; 1.125 In.
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Product Specifications

Describe Type: Cup Type
Material: Steel
Maximum Diameter: 1.145 in
Minimum Diameter: 1.132 in
Package Contents: Expansion Plug
Package Quantity: 10
Brand: Dorman - AutoGrade - Boxed
Packaging Type: Box

OE Numbers

DIRECT OE CROSS
1343096 GENERAL MOTORS
25513252 GENERAL MOTORS
946780-4 VOLVO