Dorman 555-110 expansion plug for the 1994-2003 Chevrolet S10 and other vehicles seals an opening in the engine casting with a steel cup.
- Steel cup-type plug, 42.3 mm in diameter
- Part of the Dorman Autograde line
- Replaces a plug that has gone missing or failed from fatigue
- Steel construction intended for reliable performance and long service life
Quick facts
- Part: Dorman 555-110 expansion plug
- Also called: engine expansion plug
- Fits: 1994-2003 Chevrolet S10 and other vehicles
- Material: Steel
- Condition: New
A failing plug can show up as a wet spot, rust or crusty residue around its opening, or as a falling fluid level. These signs alone do not prove the plug is the problem; a leaking gasket or seal close by is another common cause.
Fits
This plug is a direct replacement for a wide range of Chevrolet, GMC, Buick, Cadillac, Oldsmobile and Pontiac models, led by the 1994-2003 Chevrolet S10, the 1994-2003 GMC Sonoma and the 1992-2002 Chevrolet Cavalier. If your car is not named here, look it up in the "Vehicles it fits" section. A 1994-2003 Chevrolet S10 takes one plug.
Specifications
Fit and size
- Quantity per vehicle: 1
- Diameter: 42.3 mm (1.662-1.67 in)
Build and materials
- Type: cup type
- Material: steel
- Condition: New
- Country of origin: United States
In the box
One expansion plug.
Interchange: EPC-272 · EPC272-25
12337839 · 14079547
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
12337839, 14079547, EPC-272, EPC272-25
Frequently Asked Questions
Will the Dorman 555-110 expansion plug fit a 1994-2003 GMC Sonoma?
Yes, Dorman 555-110 is listed for the 1994-2003 GMC Sonoma, the 1994-2003 Chevrolet S10 and the 1992-2002 Chevrolet Cavalier, one plug each; other models are in the "Vehicles it fits" section.
What size is the Dorman Autograde expansion plug 555-110?
Dorman 555-110 is a steel cup-type plug 42.3 mm across, with a diameter range of 1.662 to 1.67 in.
Is the Dorman 555-110 one of the Dorman freeze plugs?
Yes, shoppers often call a steel cup-type expansion plug like this Dorman 555-110 a freeze plug.
What is in the package with this engine expansion plug?
The package contents list one expansion plug and nothing else, so the listing is for a single plug.
How do I spot a leaking cup-type expansion plug like the Dorman 555-110?
With the engine off and cool, look for a wet spot, rust or crusty residue around the plug's opening. A shop can pinpoint the source if it is unclear.
