NGK Iridium IX Spark Plugs Product images may differ from actual product appearance. The Plug for Serious Enthusiasts Iridium has a very high melting point that's perfect for high-performance, high-tech engines. It is stronger than any other metal used in spark plugs. Ultra-fine electrode (thin enough for spark consistency & accuracy, thick enough for max durability & longevity) Reduces spark voltage requirement Fuel efficiency & extreme ignitability Improved throttle response Outstanding acceleration Superior antifouling, anticorrosion, and antiseizing properties Quality NGK Spark Plugs Sold individually

739-BKR4EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-GR4IX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-LZTR4AIX-11

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Extended projection Tapered seat .044" Gap Sold Individually View this item

$7.99 Ships 05/29/12

739-TR4IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-UR45IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Projected Tapered seat .059" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-UR4IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-XR45IX

Iridium IX Spark Plug 14mm x 3/8" Reach 13/16" Hex Projected Gasket seat .059" Gap Sold Individually View this item

$7.99 Ships 06/05/12

739-XR4IX

Iridium IX Spark Plug 14mm x 3/8" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BCPR5EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat Sold Individually View this item

$7.99 Ships 05/29/12

739-BCPR5EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BKR5EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BKR5EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR5EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR5EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 06/05/12

739-CR5HIX

Iridium IX Spark Plug 10mm x 1/2" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-GR5IX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-LFR5AIX-11

Iridium IX Spark Plug 14mm x 26.5mm Reach 5/8" Hex Projected Gasket seat .044" Gap Sold Individually View this item

$9.99 Ships 05/29/12

739-LTR5IX-11

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Projected Tapered seat .044" Gap Sold Individually View this item

$7.99 Ships 05/29/12

739-LZTR5AIX-13

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Extended projection Tapered seat .052" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-TR5-1IX

Iridium IX Spark Plug 14mm x .807" Reach 5/8" Hex Extended projection Tapered seat Sold Individually View this item

$8.99 Ships 06/05/12

739-TR55-1IX

Iridium IX Spark Plug 14mm x .807" Reach 5/8" Hex Extended projection Tapered seat .059" Gap Sold Individually View this item

$7.99 Ships 05/29/12

739-TR55IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat .059" Gap Sold Individually View this item

$7.99 Ships 05/29/12

739-TR5IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-UR55IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Projected Tapered seat .059" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-UR5IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-WR5IX

Iridium IX Spark Plug 18mm x .460" Reach 13/16" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-XR5IX

Iridium IX Spark Plug 14mm x 3/8" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-YR55IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Tapered seat .059" Gap Sold Individually View this item

$8.99 Ships 06/05/12

739-YR5IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-ZFR5FIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO extended projection Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BCPR6EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BCPR6EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 06/05/12

739-BKR6EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BKR6EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR6EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-BPR6EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 06/05/12

739-BPR6HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BR6FIX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Tapered seat Sold Individually View this item

$8.99 Ships 06/05/12

739-BR6HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-CR6EIA-9

Iridium IX Spark Plug 10mm x 0.750" reach 5/8" hex Projected Resistor Gasket Seat Does not include terminal nut View this item

$8.99 Ships 05/29/12

739-CR6HIX

Iridium IX Spark Plug 10mm x 1/2" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-IZFR6J

Iridium IX Spark Plug 14mm x 0.750" reach 5/8" hex Resistor Gasket Seat View this item

$13.99 Ships 06/05/12

739-LFR6AIX-11

Iridium IX Spark Plug 14mm x 26.5mm Reach 5/8" Hex Projected Gasket seat .044" Gap Sold Individually View this item

$7.99 Ships 06/05/12

739-LTR6IX-11

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Projected Tapered seat .044" Gap Sold Individually View this item

$9.99 Ships 06/05/12

739-LZTR6AIX-13

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Extended projection Tapered seat .052" Gap Sold Individually View this item

$7.99 Ships 05/29/12

739-TR6IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 05/29/12

739-UR6IX

Iridium IX Spark Plug 14mm x .460" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$8.99 Ships 06/05/12

739-ZFR6FIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO extended projection Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BCPR7EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-BCPR7EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex JIS projected Gasket seat .044" Gap Sold Individually More info on NGK Spark Plugs BCPR7EIX-11

$9.99 Ships 06/05/12

739-BKR7EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$9.99 Ships 05/29/12

739-BKR7EIX-11

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat .044" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR7EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR7HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-BR7EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Gasket seat Sold Individually View this item

$7.99 Ships 06/05/12

739-BR7HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-CR7EIX

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-CR7HIX

Iridium IX Spark Plug 10mm x 1/2" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-DCPR7EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 5/8" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-DPR7EIX-9

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Projected Gasket seat .036" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-DR7EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-LFR7AIX

Iridium IX Spark Plug 14mm x 26.5mm Reach 5/8" Hex Projected Gasket seat Sold Individually View this item

$9.99 Ships 06/05/12

739-LTR7IX-11

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Projected Tapered seat .044" Gap Sold Individually View this item

$9.99 Ships 05/29/12

739-LZTR7AIX-13

Iridium IX Spark Plug 14mm x 25mm Reach 5/8" Hex Extended projection Tapered seat .052" Gap Sold Individually View this item

$9.99 Ships 05/29/12

739-TR7IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$9.99 Ships 05/29/12

739-BKR8EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$9.99 Ships 05/29/12

739-BPR8EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$13.99 Ships 05/29/12

739-BPR8HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-BR8ECMIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Compact Gasket seat Sold Individually View this item

$12.99 Ships 06/05/12

739-BR8EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BR8HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-CR8EHIX-9

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex (partial thread) Gasket seat .036" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-CR8EIB-10

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex (partial thread) Resistor Gasket seat .040" Gap Sold Individually View this item

$13.99 Ships 05/29/12

739-CR8EIX

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-CR8HIX

Iridium IX Spark Plug 10mm x 1/2" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-DCPR8EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 5/8" Hex Projected Gasket seat Sold Individually View this item

$7.99 Ships 05/29/12

739-DPR8EIX-9

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Projected Gasket seat .036" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-DR8EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-TR8IX

Iridium IX Spark Plug 14mm x .708" Reach 5/8" Hex Projected Tapered seat Sold Individually View this item

$9.99 Ships 05/29/12

739-BKR9EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 5/8" Hex ISO projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BPR9EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BR9ECMIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Compact Gasket seat Sold Individually View this item

$17.99 Ships 06/05/12

739-BR9EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Gasket seat Sold Individually View this item

$9.99 Ships 05/29/12

739-BR9HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12

739-CR9EHIX-9

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex (partial thread) Gasket seat .036" Gap Sold Individually View this item

$8.99 Ships 06/05/12

739-CR9EIX

Iridium IX Spark Plug 10mm x 3/4" Reach 5/8" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-DCPR9EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 5/8" Hex Projected Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-DPR9EIX-9

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Projected Gasket seat .036" Gap Sold Individually View this item

$8.99 Ships 05/29/12

739-DR9EIX

Iridium IX Spark Plug 12mm x 3/4" Reach 18mm Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BR10ECMIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Compact Gasket seat Sold Individually View this item

$17.99 Ships 06/05/12

739-BR10EIX

Iridium IX Spark Plug 14mm x 3/4" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 05/29/12

739-BR10HIX

Iridium IX Spark Plug 14mm x 1/2" Reach 13/16" Hex Gasket seat Sold Individually View this item

$8.99 Ships 06/05/12