Summit Racing SpeedCard - learn how to get 10% back up to $100

Summit Racing SpeedCard - learn how to get 10% back up to $100

Haul in the Savings - Shop the Truck Savings Event Today!

Availability

NGK Spark Plugs

NGK Iridium IX Spark Plugs

4.86 out of 5 stars 250 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 25 Items.

Results 1 - 15 of 15

NGK Iridium IX Spark Plugs CR9EIX

NGK Iridium IX Spark Plugs CR9EIX

NGK Iridium IX Spark Plugs CR9EIX

Spark Plug, Iridium IX, Gasket Seat, 10mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-3521

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BKR5EIX

NGK Iridium IX Spark Plugs BKR5EIX

NGK Iridium IX Spark Plugs BKR5EIX

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

Part Number: NGK-6341

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BPR6EIX

NGK Iridium IX Spark Plugs BPR6EIX

NGK Iridium IX Spark Plugs BPR6EIX

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

Part Number: NGK-6637

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs DCPR7EIX SOLID

NGK Iridium IX Spark Plugs DCPR7EIX SOLID

NGK Iridium IX Spark Plugs DCPR7EIX SOLID

Spark Plug, NGK DCPR7EIX SOLID Iridium IX Series Spark Plug, 19mm Reach, 12mm Thread, Heat Range 7, Flat Seat, 5/8 Hex, .031 in. Gap, Each

Part Number: NGK-97637

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs DCPR8EIX SOLID

NGK Iridium IX Spark Plugs DCPR8EIX SOLID

NGK Iridium IX Spark Plugs DCPR8EIX SOLID

Spark Plug, Iridium IX, Iridium, 12mm Thread, 0.750 in. Reach, Flat Seat, 5/8 in. Wrench Size, Each

Part Number: NGK-97181

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BPR8EIX

NGK Iridium IX Spark Plugs BPR8EIX

NGK Iridium IX Spark Plugs BPR8EIX

Spark Plug, Iridium IX, 14mm Thread, .750 in. Reach, 13/16 in. Hex, Gasket Seat, Each

Part Number: NGK-6684

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs CR8EIX

NGK Iridium IX Spark Plugs CR8EIX

NGK Iridium IX Spark Plugs CR8EIX

Spark Plug, Iridium IX, Gasket Seat, 10mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-4218

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BPR5EIX-11

NGK Iridium IX Spark Plugs BPR5EIX-11

NGK Iridium IX Spark Plugs BPR5EIX-11

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

Part Number: NGK-2115

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs LKAR6AIX-11

NGK Iridium IX Spark Plugs LKAR6AIX-11

NGK Iridium IX Spark Plugs LKAR6AIX-11

Spark Plug, IX Iridium, 12mm Thread, 1.040 in. Reach, 9/16 in. Hex, Gasket Seat, Resistor, Each

Part Number: NGK-91187

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

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: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BR8EIX SOLID

NGK Iridium IX Spark Plugs BR8EIX SOLID

NGK Iridium IX Spark Plugs BR8EIX SOLID

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

Part Number: NGK-6747

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs CR7HIX

NGK Iridium IX Spark Plugs CR7HIX

NGK Iridium IX Spark Plugs CR7HIX

Spark Plug, IX Iridium, 10mm Thread, .500 in. Reach, 5/8 in. Hex, Resistor, Each

Part Number: NGK-7544

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs CR7EIX

NGK Iridium IX Spark Plugs CR7EIX

NGK Iridium IX Spark Plugs CR7EIX

Spark Plug, Iridium IX, Gasket Seat, 10mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-7385

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BPR9EIX

NGK Iridium IX Spark Plugs BPR9EIX

NGK Iridium IX Spark Plugs BPR9EIX

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

Part Number: NGK-6853

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

NGK Iridium IX Spark Plugs BR8ECMIX

NGK Iridium IX Spark Plugs BR8ECMIX

NGK Iridium IX Spark Plugs BR8ECMIX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 0.750 in. Reach, Resistor, Each

Part Number: NGK-3520

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

...Loading

Estimated Ship Date: Monday 9/22/2025

  • 1
  • Page 1 of 1

Modal Header

Call To Order

This is a custom order part. You can order this part by Contacting Us.

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify