NGK IRITOP 7 Racing Spark Plug (Sold Individually).
The IRI Series plugs are designed for tuned engines that require a high heat rating; they are Iridium Plugs with excellent ignition and acceleration characteristics.
The IRI series are interchangeable as follows:
- IRIMAC = DCPR#E
- IRITOP = BCPR#E
- IRIWAY = BKR#E