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NGK 91187 LKAR6AIX-11 Iridium IX Spark Plug (4 Pack)





  • NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response.
  • NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability.
  • The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloys extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.



  • (2017-2015) Chevrolet City Express¬†
  • (2013-2007) NISSAN Altima¬†
  • (2014-2009) NISSAN Cube¬†
  • (2017-2005) NISSAN Frontier¬†
  • (2017-2015) NISSAN Micra¬†
  • (2017-2013) NISSA NV200¬†
  • (2013-2008) NISSAN Rogue¬†
  • (2015-2014) NISSAN Rogue Select¬†
  • (2017-2007) NISSAN Sentra¬†
  • (2017-2007) NISSAN Versa¬†
  • (2017-2014) NISSAN Versa Note¬†


Center Electrode Core MaterialCopper Core
Center Electrode Tip MaterialIridium
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel Core
Ground Electrode Quantity1
Ground Electrode Tip DesignTaper Cut
Hex Size14 mm
Insulator Height51.00 mm
Manufacturer Heat Range6
Part NumberLKAR6AIX-11
Pre-Gap Size.044 in
Reach26.5 mm
Resistance5000 Ohms
Seat TypeFlat
Stock Number91187
Thread Diameter12.00 mm



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