Packed as engine sets - every core plug you need for your application - choose between cylinder block set or cylinder head set.
These are also known as Freeze Plugs or Expansion Plugs. All metric sizes 18, 20, 22, 24, 28, 30, 32, 35, 45mm. Plated.
Core plugs may need to be replaced if your engine has been subjected to frost or if insufficient corrosion protection has been added to the coolant and the plugs have rusted.
The plugs should be installed square to the bore using sealing or retaining compound.