Freezer plug

The freeze plug, also known as a frost plug or engine block plug, is an important component of the engine block and seals openings in the engine's cooling system. These openings are created during the engine block manufacturing process and are subsequently sealed securely with freeze plugs.

Freeze plugs are usually located on the sides of the engine block or cylinder head and prevent coolant from escaping the cooling system. At the same time, they allow access to the internal cooling channels during engine manufacturing.

The name "freeze plug" comes from its original function of serving as a pressure relief valve in extreme freezing conditions, when coolant freezes and expands. In practice, however, these plugs primarily serve as a permanent seal for the engine's cooling channels.

Freezer plugs are typically made of steel, brass, or special corrosion-resistant metal alloys. These materials are designed to withstand the high temperatures, pressures, and chemical effects of the refrigerant over the long term.

Over time, freeze plugs can be damaged by corrosion, aging, or mechanical stress. This can lead to coolant loss and potential engine damage. Replacing them ensures that the engine's cooling system remains leak-free and functions reliably.

In this category, you'll find freezer plugs for numerous vehicle makes and models, available in perfect original equipment manufacturer (OEM) quality or as high-quality aftermarket alternatives. Autoteile Gossau offers the lowest prices in Switzerland, fast delivery, and the option to pick up your order at our store in Gossau. You can conveniently pay in cash or by card on site.