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Dorman - Autograde

Dorman Autograde Steel Cup Expansion Plug 29/32 In for Buick Cadillac Chevrolet GMC Oldsmobile Pontiac 555-015

Dorman Autograde Steel Cup Expansion Plug 29/32 In for Buick Cadillac Chevrolet GMC Oldsmobile Pontiac 555-015

sku: 1MJ4K | mpn: 555-015
$27.35
$27.35 $27.35
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Steel cup expansion plug 29/32 inch for Buick Cadillac Chevrolet GMC Oldsmobile and Pontiac engines used to replace worn or leaking oil galley plugs.

Built to meet the manufacturer's design intent for reliable service. This engine oil galley plug is constructed from quality steel materials and engineered to match the fit and function of the original part on specified vehicles.

Key Features

  • Material: Steel construction for durability
  • Size: 29/32 inch diameter with 0.310 inch height
  • Design: Cup style expansion plug for oil galley applications
  • Quantity: Sold as a 10 piece pack
  • Compatibility: Fits multiple GM brand vehicles from 1964 to 1990
  • Part Number: 555-015 by Dorman Autograde

Benefits

  • Restores proper sealing to prevent oil leaks in the engine block
  • Direct fit replacement reduces installation time and effort
  • Quality materials help reduce the risk of repeat repairs
  • Bulk 10 pack provides value for multiple repairs or shop inventory
  • Engineered to match OE form fit and function for reliable results
  • Backed by over a century of automotive experience

Application

Ideal for mechanics and DIY enthusiasts repairing engine oil leaks on older GM vehicles including Buick Cadillac Chevrolet GMC Oldsmobile and Pontiac models. Commonly used during engine rebuilds or when replacing corroded freeze plugs.

Fitment Notes

  • Fits Buick models from 1975 to 1990
  • Fits Cadillac models from 1976 to 1990
  • Fits Chevrolet models from 1980 to 1990
  • Fits GMC models from 1983 to 1984
  • Fits Oldsmobile models from 1964 to 1990
  • Fits Pontiac models from 1975 to 1989

Why Choose Dorman?

  • 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
  • Strong focus on fit durability and dependable performance helps ensure smoother installation
  • Supported by a team of product experts in the United States

What's in the Box

  • 10 Piece Pack of Steel Cup Expansion Plugs

Item Dimensions

  • 3.2 inches x 2.4 inches x 1.5 inches
  • Weight: 0.2 lbs
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