Dorman 555-040 Steel Cup Expansion Plug 1-15/16 In., Height 0.530
Features:
- 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
- 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
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.
Attributes:
| Minimum Diameter | 1.94 IN |
| Material | Steel |
| Maximum Diameter | 1.953 IN |
| Describe Type | Cup Type |
| Package Contents | Expansion Plug |
Vehicle Applications:
| Make | Model | Position | Years | Notes |
| Buick | Roadmaster | N/A | 1951 to 1952 | |
| Buick | Special | N/A | 1951 to 1953 | |
| Buick | Super | N/A | 1950 to 1952 |






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