Buy 1989 Nissan 300ZX Engine Core Plug. Cylinder head and rocker cover. EGI, AREA, Block, Welch - OEM Nissan Part # 11052-D0102 (11052D0102)

Drain Plug. Engine Expansion Plug. Engine Freeze Plug. Plug Thread. Plug Welch.
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.