Expansion Plug for 1951-1953 Buick Special & More - Dorman 555-040

$23.99

Dorman - Autograde Engine Core Plug 555-040

Dorman - Autograde Engine Core Plug 555-040 - view 2

Part number: 555-040

UPC: 019495555407

Condition: New

Weight: 0.90 LBS

Item Package Code: EA

Part Has Core (Y/N): N

Item Package Quantity: 1

$23.99

Current Stock: 275

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Dorman - Autograde Engine Core Plug P/N:555-040

$23.99

Description

Dorman 555-040 expansion plug for the 1951-1953 Buick Special and other vehicles plugs a round opening in the engine by expanding against its bore. It is also called an engine expansion plug.

Steel cup-type plug that expands to seal its opening
Cup measures 1-15/16 in across and 0.530 in high
Dorman Autograde product line
Stands in for an original plug that has gone missing or failed from fatigue

Quick facts

Part: Dorman 555-040 expansion plug
Also called: engine expansion plug
Fits: 1951-1953 Buick Special and other vehicles
Material: Steel
Condition: New

A plug that is wet with seepage, corroded at its edge or missing can mean it needs replacing. Those signs alone do not prove the plug is at fault, since a leaking gasket nearby can look the same.

Fits

It is a direct replacement for the 1951-1953 Buick Special, the 1951-1952 Buick Roadmaster and the 1950-1952 Buick Super. The fitment calls for one plug per vehicle, and this listing is one.

Specifications

Fit and size

Size: 1-15/16 in
Minimum diameter: 1.94 in
Maximum diameter: 1.953 in
Height: 0.530 in
Quantity per vehicle: 1

Build and materials

Type: cup type
Material: Steel
Condition: New
Country of origin: United States

In the box

One expansion plug.

Interchange: 260-219 · EPC-40
31576 · 1339404

Product information is for general reference and may contain errors. See our Disclaimer.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

31576, 1339404, 260-219, EPC-40

Buyer's Q&A

Frequently Asked Questions

Does this Dorman expansion plug fit the 1951-1952 Buick Roadmaster?

Yes. Dorman 555-040 is listed for the 1951-1952 Buick Roadmaster, and the fitment calls for one plug per vehicle.

Is this expansion plug one of the Dorman freeze plugs?

Yes. Freeze plug is a common name for a cup-type expansion plug. This Dorman 555-040 is steel and 1-15/16 in, with a diameter of 1.94 to 1.953 in.

Is the Dorman Autograde expansion plug made in the United States?

Yes. The country of origin for this Dorman Autograde 555-040 plug is the United States.

What are the signs a cup-type plug is going bad?

With the engine off and cool, look for seepage or wetness around the plug, rust or corrosion at its edge, or a plug that is missing. A shop can find where a leak is coming from.

Does Dorman 555-040 cross to 260-219?

Yes. 260-219 is one of the interchange numbers listed for Dorman 555-040, a steel cup expansion plug.