- NGK Iridium IX increased performances.
- New exterior alloy for a better resistance to extreme temperatures and corrosion related to it.
- Top Module made of brass with low impedance (resistance).
- Stainless Steel sealing ring (Better resistance & sealing on configurations running at very high pressure).
- Better resistance to extreme temperatures and better heat dissipation.
- Lifetime from 60 to 80 000 km depending on use.
- Linear accelerations thanks to a more stable ignition even at very high rpm.
- Ignition performances and durability, regardless of the type of use.
- Ignitability optimized, increased HP / Reduction of unburned fuel.
- A reliable & easy start at any time.
- Improved stability of the idle / Less engine vibrations.

BKR7 EQUIVALENCE :
-NGK BKR7E / BKR7ES / BKR7EY / BKR7EYA / BKR7EZ / BKR7EVX / BKR7EGP / BKR7EK / BKR7EKC / BKR7EKU / BKR7EKC-N / BKR7EQUP / PFR7B / PFR7E / PFR7G / PFR7G-S / PFR7G-9 / PFR7N-D / PFR7Q / PFR7W-T / PFR7W-TG / PFR7Z-TG / PFR7S8EG / BKR6EIX / BKR7EIX / BKR7EIX-11 / BKR7EIX-P / BKR7EIX-PS / IFR7X-8G
-DENSO K22PB / K22PBR-S / K22R-U / K22PR-U / K22TNR-S / IK20 / IK20G / IK22 / IK22G / VK22 / VK22G

BKR8 EQUIVALENCE :
-NGK BKR8EIX / BKR8EIX-11 / BKR7EIX (One Step Colder) / BKR7EIX-11 (One Step Colder) / PFR7S8EG (One Step Colder) / PFR8S8EG / IFR8X-8G / IFR8X8G
- DENSO IK24 / K24PR-ZU / VK24PR-Z11 / IK01-24
- BOSCH F 5KP P33 2GF / F5KPP332GF
- VW 101 905 631 G / 101905631G / 101 905 631 H / 101905631H / 101 905 611 G / 101905611G

BKR9 EQUIVALENCE :
- NGK BKR9EVX / BKR9EIX / BKR8EIX (One step colder)
- DENSO IK27 / IK24 (One step colder)