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555-040 Steel Cup Expansion Plug 1-15/16 in., Height 0.530; 1950-1953 Buick
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DORMAN PRODUCTSPART NUMBER: 326-555-040

555-040 Steel Cup Expansion Plug 1-15/16 in., Height 0.530; 1950-1953 Buick

$1766
ShippingShips on 09/21/2026
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Steel Cup Expansion Plug 1-15/16 in., Height 0.530
  • 1951-1952 Buick Roadmaster; 1951-1953 Buick Special; 1950-1952 Buick Super
  • Sold Individually

    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.

    Steel Cup Expansion Plug 1-15/16 in., Height 0.530 555-040 Features:

    • Fits 1951-1952 Buick Roadmaster; 1951-1953 Buick Special; 1950-1952 Buick Super
    • 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
  • Part TypeEngine Expansion Plug
    BrandDORMAN PRODUCTS
    Package Height0.6
    Package Width2.0
    Package Length3.0
    Weight0.1 PG
    Part CategoryReplacement Parts
    Minimum Diameter1.94 in.
    Quantity10
    Maximum Diameter1.953 in.
    MaterialSteel
    Part FitmentDirect Fit
    Vendor Part Number555-040
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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