Welsh Plugs & Sump Plugs

Welsh plugs are used to fill the casting core holes found in automotive engines. They are also commonly known as frost plugs, freeze plugs, core plugs or engine block expansion plugs. They are often corroded by coolant and are often very labour intensive to remove.

Pro-Torque Automotive Products have overĀ 120 metric and imperial sized Welsh Plugs are available in our bulk range. Supplied in Brass, Stainless Steel and Steel with most sizes available in cup and dome profiles. Covering more than 3,000 vehicles our Sump Plugs come in over 100 sizes. Standard, oversize, piggy back and magnetic bolts are available as well as fibre, copper, aluminium washers.

  • Welsh Plugs – Bulkwelsh plugs
  • Welsh Plug Kits
  • Sump Plugs and Sump Plug Washers