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Dorman 555-027 Engine Expansion Plug - Rear
Overview of Dorman Engine Core Plug 555-027
The Dorman 555-027 engine core plug is designed for reliable sealing in Chevrolet and GMC engines. Made from durable steel, this cup-type expansion plug ensures a secure fit for models like the Chevrolet S10, S10 Blazer, and GMC S15 Jimmy.
- Constructed from corrosion-resistant steel for durability
- Cup-type design for effective sealing
- Maximum diameter of 1.514 inches and minimum diameter of 1.5 inches
- Compatible with Chevrolet LUV, S10, S10 Blazer, and GMC S15, S15 Jimmy
- Sold as a single expansion plug
Detailed Product Description
The Dorman 555-027 engine core plug is engineered to provide a precise seal in engine block openings. Its steel construction offers strength and resistance to engine fluids and heat, making it suitable for long-term use. The cup-type design allows the plug to expand slightly, creating a tight seal that prevents coolant or oil leaks. With a diameter range between 1.5 and 1.514 inches, this plug fits specific engine block holes found in Chevrolet and GMC trucks and SUVs, including the Chevrolet S10 and GMC S15 Jimmy.
Applications and Common Issues Addressed
- Sealing engine block core holes after manufacturing
- Preventing coolant leaks in Chevrolet S10 and GMC S15 engines
- Replacing worn or corroded core plugs in Chevrolet LUV and S10 Blazer
- Maintaining engine integrity by stopping oil seepage
- Addressing overheating issues caused by coolant loss
Installation Notes and Tips
- Ensure the engine block hole is clean and free of debris before installation
- Use appropriate tools to press the plug evenly into the core hole
- Verify the plug diameter matches the engine block specifications (1.5 to 1.514 inches)
- Inspect surrounding areas for corrosion or damage prior to installation
- Consult vehicle service manual for torque and installation procedures
Quality Assurance and Warranty
Dorman manufactures the 555-027 engine core plug to meet OEM standards for fit and function. The steel material provides reliable performance under typical engine operating conditions. While specific warranty details are not provided, Dorman products generally come with a limited warranty against defects in material and workmanship. For detailed warranty information, refer to Dorman's official documentation.
| Brand | Dorman |
|---|---|
| Part Number | 555-027 |
| Describe Type | Cup Type |
| Material | Steel |
| Maximum Diameter | 1.514 |
| Minimum Diameter | 1.5 |
| Package Contents | Expansion Plug |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1985 | Chevrolet | S10 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1985 | GMC | S15 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1984 | Chevrolet | S10 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1984 | Chevrolet | S10 Blazer | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1984 | GMC | S15 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1984 | GMC | S15 Jimmy | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1983 | Chevrolet | S10 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1983 | Chevrolet | S10 Blazer | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1983 | GMC | S15 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1983 | GMC | S15 Jimmy | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1982 | Chevrolet | S10 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1982 | GMC | S15 | 1.9L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1981 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1980 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1979 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1978 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1977 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1976 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
| 1975 | Chevrolet | LUV | 1.8L | L4 | Rear | 1.50 In.; 1 Required; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.