ACDelco R45 Copper Spark Plug - 4 Pack - 19354428 GM OEM

ACDelco R45TS Copper Spark Plug - 4 Pack - 19354415 GM OEM

ACDelco CR43TS Copper Spark Plug - 4 Pack - 19354425 GM OEM

ACDelco R44T Copper Spark Plug - 4 Pack - 19354432 GM OEM

ACDelco R44TX Copper Spark Plug - 4 Pack - 19369869 GM OEM

ACDelco R46SZ Copper Spark Plug - 4 Pack - 19355455 GM OEM

ACDelco R45XLS Copper Spark Plug - 4 Pack - 19382850 GM OEM

ACDelco MR43T Copper Spark Plug - 4 Pack - 19355200 GM OEM