Amkeer, please tell us how NGK confirmed your plugs were counterfeit.
In recent discussions here, it seems that members thought that Amazon was less reliable vs. Rock Auto for genuine plugs due to their respective business models. We recently discussed that Rock Auto uses the same supply warehouses that the big box auto stores (AA, Autozone,Oreilly, etc.). Yet, one member claimed he still got counterfeits from RA.
How do we know the suppliers that NAPA, Advanced, etc. uses supply genuine plugs any more than Rock Auto?
Edit: Mr. Nice, that Motorcraft video is scary. Almost impossible to discern the fake without having a genuine one to compare AND knowing what to look for.