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NGK Spark Plugs

NGK Iridium IX Spark Plugs

4.86 out of 5 stars 252 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 28 Items.

Results 1 - 19 of 19

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 )

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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 )

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NGK Iridium IX Spark Plugs YR5IX

NGK Iridium IX Spark Plugs YR5IX

NGK Iridium IX Spark Plugs YR5IX

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

Part Number: NGK-7516

5.0 out of 5 stars ( 1 )

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NGK Iridium IX Spark Plugs DCPR9EIX

NGK Iridium IX Spark Plugs DCPR9EIX

NGK Iridium IX Spark Plugs DCPR9EIX

Spark Plug, Iridium, 12mm Thread, .750 in. Reach, 5/8 Hex, Gasket Seat, Resistor, Each

Part Number: NGK-2316

5.0 out of 5 stars ( 1 )

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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

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NGK Iridium IX Spark Plugs DR8EIX

NGK Iridium IX Spark Plugs DR8EIX

NGK Iridium IX Spark Plugs DR8EIX

Spark Plug, Iridium IX, Gasket Seat, 12mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-6681

Not Yet Reviewed

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NGK Iridium IX Spark Plugs ZFR5FIX-11

NGK Iridium IX Spark Plugs ZFR5FIX-11

NGK Iridium IX Spark Plugs ZFR5FIX-11

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

Part Number: NGK-2477

5.0 out of 5 stars ( 3 )

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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 )

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NGK Iridium IX Spark Plugs DPR8EIX-9

NGK Iridium IX Spark Plugs DPR8EIX-9

NGK Iridium IX Spark Plugs DPR8EIX-9

Spark Plug, Iridium IX, Gasket Seat, 12mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-2202

5.0 out of 5 stars ( 1 )

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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 )

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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

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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

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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

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NGK Iridium IX Spark Plugs BCPR7EIX

NGK Iridium IX Spark Plugs BCPR7EIX

NGK Iridium IX Spark Plugs BCPR7EIX

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

Part Number: NGK-5690

2.5 out of 5 stars ( 2 )

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NGK Iridium IX Spark Plugs BR9ECMIX

NGK Iridium IX Spark Plugs BR9ECMIX

NGK Iridium IX Spark Plugs BR9ECMIX

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

Part Number: NGK-2707

Not Yet Reviewed

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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

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NGK Iridium IX Spark Plugs DPR9EIX-9

NGK Iridium IX Spark Plugs DPR9EIX-9

NGK Iridium IX Spark Plugs DPR9EIX-9

Spark Plug, IX Iridium, 12mm Thread, .750 in. Reach, 18mm Hex, Gasket Seat, Resistor, Each

Part Number: NGK-5545

Not Yet Reviewed

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NGK Iridium IX Spark Plugs for 1988-1991 EL250 ELIMINATOR, 1986-2007 EX250F NINJA 250R - CR8HIX

NGK Iridium IX Spark Plugs for 1988-1991 EL250 ELIMINATOR, 1986-2007 EX250F NINJA 250R - CR8HIX

NGK Iridium IX Spark Plugs for 1988-1991 EL250 ELIMINATOR, 1986-2007 EX250F NINJA 250R - CR8HIX

Spark Plug, Iridium IX, Gasket Seat, 10mm Thread, .500 in. Reach, Resistor, Each

Part Number: NGK-7669

Not Yet Reviewed

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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

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