Filters

  • In Stock
  • Universal
  • Make/Model
  • Make/Engine
  • Spark Plug Thread Size
  • Spark Plug Reach (in.)
  • Spark Plug Reach (mm)
  • Spark Plug Seat Style
  • Manufacturer Heat Range
  • Electrode Core Material
  • Center Electrode Type
  • Wrench Diameter
  • Filter Options

Selected Filters

Filter Results by Vehicle

Loading...

Availability

  • Filters

  • Universal
  • Make/Model
  • Make/Engine
  • Spark Plug Thread Size
  • Spark Plug Reach (in.)
  • Spark Plug Reach (mm)
  • Spark Plug Seat Style
  • Manufacturer Heat Range
  • Electrode Core Material
  • Center Electrode Type
  • Wrench Diameter
  • Filter Options
NGK Spark Plugs

NGK Iridium IX Spark Plugs

4.86 out of 5 stars 253 Customer Reviews

NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is the hardest metal used in spark plugs today—six times harder than platinum. This allowed NGK engineers to reduce the voltage requirement for a spark. Iridium IX plugs are available in more than a hundred configurations for universal and vehicle-specific applications.

Showing In Stock Items. Show All 14 Items.

Results 1 - 12 of 12

NGK Iridium IX Spark Plugs LTR6IX-11

NGK Iridium IX Spark Plugs LTR6IX-11

NGK Iridium IX Spark Plugs LTR6IX-11

Spark Plug, IX Iridium, 14mm Thread, 0.984 in. Reach, 5/8 in. Hex, Tapered Seat, Resistor, Each

Part Number: NGK-6509

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs LTR5IX-11

NGK Iridium IX Spark Plugs LTR5IX-11

NGK Iridium IX Spark Plugs LTR5IX-11

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .984 in. Reach, Resistor, Each

Part Number: NGK-4344

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs UR4IX

NGK Iridium IX Spark Plugs UR4IX

NGK Iridium IX Spark Plugs UR4IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7401

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs UR5IX

NGK Iridium IX Spark Plugs UR5IX

NGK Iridium IX Spark Plugs UR5IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7177

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs WR5IX

NGK Iridium IX Spark Plugs WR5IX

NGK Iridium IX Spark Plugs WR5IX

Spark Plug, Iridium IX, Tapered Seat, 18mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7510

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs UR45IX

NGK Iridium IX Spark Plugs UR45IX

NGK Iridium IX Spark Plugs UR45IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7559

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs TR55-1IX

NGK Iridium IX Spark Plugs TR55-1IX

NGK Iridium IX Spark Plugs TR55-1IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .807 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7316

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs ZFR6FIX-11

NGK Iridium IX Spark Plugs ZFR6FIX-11

NGK Iridium IX Spark Plugs ZFR6FIX-11

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-6441

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7348

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs BPR5EIX SOLID

NGK Iridium IX Spark Plugs BPR5EIX SOLID

NGK Iridium IX Spark Plugs BPR5EIX SOLID

Spark Plug, Iridium IX, Iridium, 14mm Thread, 0.927 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: NGK-95525

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs BPR6EIX-11

NGK Iridium IX Spark Plugs BPR6EIX-11

NGK Iridium IX Spark Plugs BPR6EIX-11

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-3903

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

NGK Iridium IX Spark Plugs 91164

NGK Iridium IX Spark Plugs 91164

NGK Iridium IX Spark Plugs 91164

Spark Plug, Iridium IX, 12mm Thread, 0.984 in. Reach, 8 Heat Range, 14mm Wrench Size, LZNAR8AIX-P, Each

Part Number: NGK-91164

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

  • 1
  • Page 1 of 1