Engine Core Plug 1" (25.4mm) OD

Core plugs, also called freeze plugs, welch plug, or expansion plug. Core plugs are used to fill the core holes on water cooled internal combustion engines.

Often used as a form of protection against frost to save engines from being damaged due to ice expanding in the engines waterways.

Core plugs are also used on oilwayson some engines.

We keep a full range of core plugs to suit most engines, if you can not see what your looking for please get in touch