Dorman 555-110 Engine Expansion Plug

Name: Dorman 555-110 Engine Expansion Plug
Brand: Dorman
SKU: BKKZ-555-110
Price: 26.40 USD
Availability: InStock

N/A

109 vehicles fit this part

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Fitment: Chevrolet, GMC, Pontiac, Buick, Oldsmobile, and Cadillac, S10, Sonoma, Cavalier, Sunfire, Century, Beretta, Corsica, Cutlass Ciera, LLV, Lumina, Skyhawk, Firenza, Cimarron, Sunbird, J2000 Sunbird, S10 Blazer, S15, S15 Jimmy, and J2000

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Overview of Dorman Engine Core Plug 555-110

The Dorman 555-110 engine core plug is designed for reliable sealing in various GM vehicles. Made from durable steel, this cup-type expansion plug is compatible with multiple Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models, including the Cavalier, Century, and S10.

Constructed from corrosion-resistant steel for durability
Cup-type design ensures a secure fit and effective sealing
Maximum diameter of 0.167 inches and minimum diameter of 1.662 inches for precise fitment
Compatible with a wide range of GM vehicles such as Chevrolet Lumina and Pontiac Sunfire
Sold as a single expansion plug for engine core sealing applications

Detailed Product Description

The Dorman 555-110 engine core plug is engineered to provide a reliable seal in engine block openings, preventing coolant and oil leaks. Its steel construction offers resistance to corrosion and wear, which is essential for maintaining engine integrity over time. The cup-type design allows for easy installation and a tight fit, reducing the risk of leaks under normal operating conditions. With a maximum diameter of 0.167 inches and a minimum diameter of 1.662 inches, this plug fits precisely in designated engine core holes, ensuring compatibility with specific GM models.

Compatible Vehicles and Applications

This engine core plug is compatible with a variety of GM makes and models, including Buick Century, Cadillac Cimarron, Chevrolet Corsica, GMC S15 Jimmy, Oldsmobile Cutlass Ciera, and Pontiac Sunbird. It is suitable for use in engine maintenance and repair tasks where sealing of core holes is required to prevent fluid leaks and maintain engine performance.

Seals engine block core holes to prevent coolant leaks
Replaces worn or damaged expansion plugs
Prevents oil contamination and maintains engine pressure
Helps avoid overheating caused by coolant loss
Supports engine rebuilds and routine maintenance

Installation Notes and Tips

Before installing the Dorman 555-110 engine core plug, ensure the engine block surface is clean and free of debris. The cup-type plug should be pressed or gently tapped into place using appropriate tools to avoid damage. Verify the plug is seated flush with the engine block to ensure a proper seal. It is recommended to inspect surrounding areas for corrosion or damage during installation.

Quality Assurance and Warranty

Dorman manufactures the 555-110 engine core plug to meet or exceed OEM specifications for fit and function. The steel material provides long-lasting durability under typical engine operating conditions. While specific warranty details may vary, Dorman products generally come with a limited warranty against defects in material and workmanship, providing confidence in product reliability.

Brand	Dorman
Part Number	555-110
Describe Type	Cup Type
Material	Steel
Maximum Diameter	0.167
Minimum Diameter	1.662
Package Contents	Expansion Plug

This part fits 109 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position	Notes
2003	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2003	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2002	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2002	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2002	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2002	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2001	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2001	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2001	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2001	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2000	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2000	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2000	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
2000	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1999	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1999	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1999	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1999	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1998	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1998	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1998	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1998	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1997	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1997	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1997	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1997	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Buick	Century	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Chevrolet	Corsica	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Oldsmobile	Cutlass Ciera	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Buick	Century	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Chevrolet	Corsica	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Oldsmobile	Cutlass Ciera	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995	Pontiac	Sunfire	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	Buick	Century	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	Chevrolet	Corsica	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	Chevrolet	S10	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	GMC	Sonoma	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994	Oldsmobile	Cutlass Ciera	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993	Buick	Century	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993	Chevrolet	Corsica	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993	Chevrolet	Lumina	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993	Oldsmobile	Cutlass Ciera	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1992	Chevrolet	Cavalier	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1992	Chevrolet	Corsica	2.2L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989	Chevrolet	Corsica	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988	Chevrolet	Corsica	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987	Chevrolet	Corsica	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Buick	Skyhawk	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Cadillac	Cimarron	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Oldsmobile	Firenza	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Pontiac	Sunbird	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986	Pontiac	Sunbird	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Buick	Skyhawk	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Cadillac	Cimarron	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Oldsmobile	Firenza	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Pontiac	J2000 Sunbird	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985	Pontiac	J2000 Sunbird	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Buick	Skyhawk	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Cadillac	Cimarron			N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Chevrolet	S10	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Chevrolet	S10 Blazer	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	GMC	S15	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	GMC	S15 Jimmy	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Oldsmobile	Firenza	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Pontiac	J2000 Sunbird	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1984	Pontiac	J2000 Sunbird	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Buick	Skyhawk	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Buick	Skyhawk	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Cadillac	Cimarron			N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Chevrolet	Cavalier	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Chevrolet	S10	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Chevrolet	S10 Blazer	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	GMC	S15	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	GMC	S15 Jimmy	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Oldsmobile	Firenza	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Oldsmobile	Firenza	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Pontiac	J2000	2.0L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1983	Pontiac	J2000	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1982	Buick	Skyhawk	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1982	Cadillac	Cimarron			N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1982	Chevrolet	Cavalier	1.8L	L4	N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1982	Oldsmobile	Firenza			N/A	4 Required; 42.3 mm; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1982	Pontiac	J2000			N/A	4 Required; 42.3 mm; 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:

12337839EPC-272

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.