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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 63 Items.

Results 1 - 25 of 42

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 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 )

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NGK Iridium IX Spark Plugs for 2006-2009 STS, XLR - TR7IX

NGK Iridium IX Spark Plugs for 2006-2009 STS, XLR - TR7IX

NGK Iridium IX Spark Plugs for 2006-2009 STS, XLR - TR7IX

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

Part Number: NGK-3690

5.0 out of 5 stars ( 13 )

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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 )

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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 )

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NGK Iridium IX Spark Plugs BKR8EIX

NGK Iridium IX Spark Plugs BKR8EIX

NGK Iridium IX Spark Plugs BKR8EIX

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

Part Number: NGK-2668

5.0 out of 5 stars ( 6 )

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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 )

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NGK Iridium IX Spark Plugs BKR9EIX

NGK Iridium IX Spark Plugs BKR9EIX

NGK Iridium IX Spark Plugs BKR9EIX

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

Part Number: NGK-2669

5.0 out of 5 stars ( 3 )

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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 )

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NGK Iridium IX Spark Plugs LZTR5AIX-13

NGK Iridium IX Spark Plugs LZTR5AIX-13

NGK Iridium IX Spark Plugs LZTR5AIX-13

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

Part Number: NGK-2314

5.0 out of 5 stars ( 4 )

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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 )

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NGK Iridium IX Spark Plugs LZTR7AIX-13

NGK Iridium IX Spark Plugs LZTR7AIX-13

NGK Iridium IX Spark Plugs LZTR7AIX-13

Spark Plug, LZTR7AIX-13, Iridium IX, 14mm Thread, 0.984 in. Reach, Tapered Seat, 5/8 in. Hex, Each

Part Number: NGK-5107

5.0 out of 5 stars ( 1 )

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 )

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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 BKR7EIX-11

NGK Iridium IX Spark Plugs BKR7EIX-11

NGK Iridium IX Spark Plugs BKR7EIX-11

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

Part Number: NGK-6988

Not Yet Reviewed

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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 BR8EIX

NGK Iridium IX Spark Plugs BR8EIX

NGK Iridium IX Spark Plugs BR8EIX

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

Part Number: NGK-5044

5.0 out of 5 stars ( 2 )

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 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 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 XR4IX

NGK Iridium IX Spark Plugs XR4IX

NGK Iridium IX Spark Plugs XR4IX

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .375 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-7189

5.0 out of 5 stars ( 3 )

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 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 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: Today

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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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