Denso (3297) SK20R11 Iridium Spark Plugs - Pack of 4 - High Performance Spark Plugs for Cars, Trucks & SUVs - Improves Fuel Efficiency & Engine Performance

With all the fuss about cheap, inferior fake copies of ND and NGK spark plugs being circulated I was concerned so I checked these carefully and they are indeed authentic ND iridium spark plugs, the originals (exact same plugs) had over 200k miles on them and had some wear but were still functional and had resistance values within spec.