Counterfeit NGK Sparkplugs from Ebay! Photo comparison : r/autorepair
Tuner Imports - Just when we thought the counterfeit NGK Spark Plugs we found recently were a pretty close match to the real thing, we've now found counterfeit Denso Iridium Power Spark
Identifying Fake NGK Spark Plugs - LS1TECH - Camaro and Firebird Forum Discussion