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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 66 Items.

Results 1 - 25 of 35

NGK Iridium IX Spark Plugs for 2006-2007 6, 2014 CTS, 2014-2015 XTS - LTR7IX-11

NGK Iridium IX Spark Plugs for 2006-2007 6, 2014 CTS, 2014-2015 XTS - LTR7IX-11

NGK Iridium IX Spark Plugs for 2006-2007 6, 2014 CTS, 2014-2015 XTS - LTR7IX-11

Spark Plug IX Iridium, 14mm Thread, 25mm Reach, 5/8 in. Hex, Tapered Seat, Resistor, Each

Part Number: NGK-6510

4.69 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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: Tomorrow

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NGK Iridium IX Spark Plugs TR8IX

NGK Iridium IX Spark Plugs TR8IX

NGK Iridium IX Spark Plugs TR8IX

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

Part Number: NGK-3691

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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NGK Iridium IX Spark Plugs XR5IX

NGK Iridium IX Spark Plugs XR5IX

NGK Iridium IX Spark Plugs XR5IX

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

Part Number: NGK-7355

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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 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: Tomorrow

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NGK Iridium IX Spark Plugs LZTR4AIX-11

NGK Iridium IX Spark Plugs LZTR4AIX-11

NGK Iridium IX Spark Plugs LZTR4AIX-11

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

Part Number: NGK-2313

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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NGK Iridium IX Spark Plugs ZNAR7AIX

NGK Iridium IX Spark Plugs ZNAR7AIX

NGK Iridium IX Spark Plugs ZNAR7AIX

Spark Plug, Iridium, Projected Tip, 12mm Thread, 26.5mm Reach, Tapered Seat, Each

Part Number: NGK-7554

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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NGK Iridium IX Spark Plugs IZFR6J

NGK Iridium IX Spark Plugs IZFR6J

NGK Iridium IX Spark Plugs IZFR6J

Spark Plug, Iridium, 14mm Thread, .750 in. Reach, 5/8 in. Hex, Gasket Seat, Resistor, Each

Part Number: NGK-4462

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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NGK Iridium IX Spark Plugs ZFR6AIX-11S

NGK Iridium IX Spark Plugs ZFR6AIX-11S

NGK Iridium IX Spark Plugs ZFR6AIX-11S

Spark Plug, IX Iridium, 14mm Thread, 0.750 in. Reach, 5/8 in. Hex, Gasket Seat, Resistor, Each

Part Number: NGK-97138

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: Tomorrow

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NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

NGK Iridium IX Spark Plugs for 1993-1995 CAMARO, FIREBIRD, 1970-1995 MUSTANG - UR6IX

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

Part Number: NGK-7348

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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