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NGK Spark Plugs

NGK Iridium IX Spark Plugs

4.86 out of 5 stars 251 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 44 Items.

Results 1 - 25 of 34

NGK Iridium IX Spark Plugs LFR5AIX-11

NGK Iridium IX Spark Plugs LFR5AIX-11

NGK Iridium IX Spark Plugs LFR5AIX-11

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 1.043 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-4469

4.86 out of 5 stars ( 14 )

Estimated Ship Date: Today

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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: Today

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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: Today

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NGK Iridium IX Spark Plugs LFR7AIX

NGK Iridium IX Spark Plugs LFR7AIX

NGK Iridium IX Spark Plugs LFR7AIX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 1.043 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-2309

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs BKR7EIX

NGK Iridium IX Spark Plugs BKR7EIX

NGK Iridium IX Spark Plugs BKR7EIX

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

Part Number: NGK-2667

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs LKR7DIX-11S

NGK Iridium IX Spark Plugs LKR7DIX-11S

NGK Iridium IX Spark Plugs LKR7DIX-11S

Spark Plug, IX Iridium, 12mm Thread, 1.040 in. Reach, 5/8 in. Hex, Gasket Seat, Resistor, Each

Part Number: NGK-93175

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs LTR6IX

NGK Iridium IX Spark Plugs LTR6IX

NGK Iridium IX Spark Plugs LTR6IX

Spark Plug, Iridium IX, 14mm Thread, 25mm. Reach, Resistor, Tapered Seat, Each

Part Number: NGK-94374

Not Yet Reviewed

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NGK Iridium IX Spark Plugs LFR6AIX-11

NGK Iridium IX Spark Plugs LFR6AIX-11

NGK Iridium IX Spark Plugs LFR6AIX-11

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 1.043 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-6619

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs BKR5EIX-11

NGK Iridium IX Spark Plugs BKR5EIX-11

NGK Iridium IX Spark Plugs BKR5EIX-11

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

Part Number: NGK-5464

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs BKR6EIX-11

NGK Iridium IX Spark Plugs BKR6EIX-11

NGK Iridium IX Spark Plugs BKR6EIX-11

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

Part Number: NGK-3764

4.8 out of 5 stars ( 10 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs BKR6EIX

NGK Iridium IX Spark Plugs BKR6EIX

NGK Iridium IX Spark Plugs BKR6EIX

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

Part Number: NGK-6418

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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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: Today

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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: Today

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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: Today

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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 LKAR7BIX-11S

NGK Iridium IX Spark Plugs LKAR7BIX-11S

NGK Iridium IX Spark Plugs LKAR7BIX-11S

Spark Plugs, Iridium IX, Flat Seat, 12mm Thread, 26.5mm Reach, Each

Part Number: NGK-93501

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs CR10EIX

NGK Iridium IX Spark Plugs CR10EIX

NGK Iridium IX Spark Plugs CR10EIX

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

Part Number: NGK-6482

Not Yet Reviewed

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NGK Iridium IX Spark Plugs BR7EIX

NGK Iridium IX Spark Plugs BR7EIX

NGK Iridium IX Spark Plugs BR7EIX

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

Part Number: NGK-6664

Not Yet Reviewed

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NGK Iridium IX Spark Plugs LFR6AIX

NGK Iridium IX Spark Plugs LFR6AIX

NGK Iridium IX Spark Plugs LFR6AIX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 1.040 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-93893

Not Yet Reviewed

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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 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: Today

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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

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs BR10EIX

NGK Iridium IX Spark Plugs BR10EIX

NGK Iridium IX Spark Plugs BR10EIX

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

Part Number: NGK-6801

Not Yet Reviewed

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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 )

Estimated Ship Date: Today

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