Buy 1999 Buick Century Engine Core Plug. Envista; CYL HD CORE HOLE 61 OD. Trax; CYL HD CORE HOLE 61 OD AUX, HOSE, PUMP - OEM Buick Part # 9427693 (09427693)

Plug.
5/8". Location-Cylinder Head. Location-Engine Block. 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. Cup. Engine Core. Engine Freeze. Engine Welch. Expansion.

Engine Expansion Plug

Envista; CYL HD CORE HOLE 61 OD. Trax; CYL HD CORE HOLE 61 OD.