These are the ngk iridium ix spark plugs and the fakes are often found on ebay and other.
Original fake ngk iridium spark plugs.
This material has a very high melting point and is extremely hard and long lasting explains kai.
If you have been following any of the vag 1 8t tfsi tuning scene over the last few months you will have noticed a few posts on facebook groups such as 1 8t 20v tuning and tfsi tuning that there have been fake ngk spark plugs going round which have huge negative effects on stock and tuned engines.
Original ngk cr9eix spark plugs have a centre electrode with an iridium tip.
Why use potertially harmful imitation spark plugs in the engines of valuable cars motorcycles and general purpose machinery.
The use of imitation spark plugs can damage your engine.
The fake plugs however do not have any iridium on the centre electrode.
Reports from defrauded consumers clearly show that using imitation spark plugs can damage your engine.