Plug. Core.
All Required. Location-Cylinder Head. Plug that prevents the engine block or Cylinder Head from cracking in case of freezing coolant. Also used to Plug the casting holes from production. Engine Expansion. Engine Freeze. Engine Welch.
Engine Expansion Plug
Fits 2500, 3500, 4500, 5500, Ram 2500, Ram 3500, Ram 4500, Ram 5500