A-0650577-AI CORE PLUGOne New Aftermarket Replacement Freeze Plug (Core Plug) Fits Massey Ferguson, Perkins, Leyland, Fits Allis Chalmers, Landini, and Fits JCB Equipment This mild steel cup type core plug (also known as a freeze plug, expansion plug, or Welch plug) seals the sand casting holes in the engine block and cylinder head coolant passages on a wide range of Perkins powered agricultural tractors, backhoes, and industrial engines. Over time, core plugs can corrode
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