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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 18 Items.

Results 1 - 14 of 14

NGK Iridium IX Spark Plugs TR6IX

NGK Iridium IX Spark Plugs TR6IX

NGK Iridium IX Spark Plugs TR6IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-3689

5.0 out of 5 stars ( 11 )

Estimated Ship Date: Today

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NGK Iridium IX Spark Plugs TR55IX

NGK Iridium IX Spark Plugs TR55IX

NGK Iridium IX Spark Plugs TR55IX

Spark Plug, Iridium IX, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7164

4.97 out of 5 stars ( 29 )

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 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: Today

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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: Today

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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: 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 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: Today

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NGK Iridium IX Spark Plugs ZNAR6AIX-11

NGK Iridium IX Spark Plugs ZNAR6AIX-11

NGK Iridium IX Spark Plugs ZNAR6AIX-11

Spark Plug, Iridium IX, ZNAR6IX-11, 12mm Thread, 26.5mm Reach, Projected Tip, Resistor, Each

Part Number: NGK-372

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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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: Today

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NGK Iridium IX Spark Plugs GR4IX

NGK Iridium IX Spark Plugs GR4IX

NGK Iridium IX Spark Plugs GR4IX

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

Part Number: NGK-97382

3.67 out of 5 stars ( 3 )

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 BR7HIX

NGK Iridium IX Spark Plugs BR7HIX

NGK Iridium IX Spark Plugs BR7HIX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .500 in. Reach, Resistor, Each

Part Number: NGK-7067

Not Yet Reviewed

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