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NGK Iridium IX Spark Plugs


NGK Spark Plugs
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


  • 72 Products Prev | Page: 1 2 3 ... |  Next Results per Page:
    Hot-Medium Heat Range
    NGK Spark Plugs BPR6HIX - NGK Iridium IX Spark Plugs
    739-BPR6HIX
    Iridium IX Spark Plug
  • 14mm x 1/2" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • Was: $8.99
    Now: $5.99
    Ships
    NGK Spark Plugs BR6FIX - NGK Iridium IX Spark Plugs
    739-BR6FIX
    Iridium IX Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR6EIA-9 - NGK Iridium IX Spark Plugs
    739-CR6EIA-9
    Iridium IX Spark Plug
  • 10mm x 0.750" reach
  • 5/8" hex
  • Projected
  • Resistor
  • Gasket Seat
  • Does not include terminal nut
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR6HIX - NGK Iridium IX Spark Plugs
    739-CR6HIX
    Iridium IX Spark Plug
  • 10mm x 1/2" Reach
  • 5/8" Hex
  • Gasket seat
  • Sold Individually
  • $7.43
    Ships
    NGK Spark Plugs LFR6AIX-11 - NGK Iridium IX Spark Plugs
    739-LFR6AIX-11
    Iridium IX Spark Plug
  • 14mm x 26.5mm Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • .044" Gap
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs LZTR6AIX-13 - NGK Iridium IX Spark Plugs
    739-LZTR6AIX-13
    Iridium IX Spark Plug
  • 14mm x 25mm Reach
  • 5/8" Hex
  • Extended projection
  • Tapered seat
  • .052" Gap
  • Sold Individually
  • $7.10
    Ships
    NGK Spark Plugs TR6IX - NGK Iridium IX Spark Plugs
    739-TR6IX
    Iridium IX Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • Sold Individually
  • $7.32
    Ships
    NGK Spark Plugs UR6IX - NGK Iridium IX Spark Plugs
    739-UR6IX
    Iridium IX Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs ZFR6FIX-11 - NGK Iridium IX Spark Plugs
    739-ZFR6FIX-11
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • ISO extended projection
  • Gasket seat
  • .044" Gap
  • Sold Individually
  • $6.99
    Ships
    Medium Heat Range
    NGK Spark Plugs BCPR7EIX - NGK Iridium IX Spark Plugs
    739-BCPR7EIX
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • JIS projected
  • Gasket seat
  • Sold Individually
  • Was: $8.99
    Now: $5.99
    Ships
    NGK Spark Plugs BCPR7EIX-11 - NGK Iridium IX Spark Plugs
    739-BCPR7EIX-11
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • JIS projected
  • Gasket seat
  • .044" Gap
  • Sold Individually
  • Was: $8.99
    Now: $5.99
    Ships
    NGK Spark Plugs BKR7EIX - NGK Iridium IX Spark Plugs
    739-BKR7EIX
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • ISO projected
  • Gasket seat
  • Sold Individually
  • $7.43
    Ships
    NGK Spark Plugs BPR7EIX - NGK Iridium IX Spark Plugs
    739-BPR7EIX
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • $7.10
    Ships
    NGK Spark Plugs BPR7HIX - NGK Iridium IX Spark Plugs
    739-BPR7HIX
    Iridium IX Spark Plug
  • 14mm x 1/2" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs BR7EIX - NGK Iridium IX Spark Plugs
    739-BR7EIX
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Sold Individually
  • $7.10
    Ships
    NGK Spark Plugs BR7HIX - NGK Iridium IX Spark Plugs
    739-BR7HIX
    Iridium IX Spark Plug
  • 14mm x 1/2" Reach
  • 13/16" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Ships
    NGK Spark Plugs CPR7EAIX-9 - NGK Iridium IX Spark Plugs
    739-CPR7EAIX-9
    Iridium IX Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • ISO projected
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR7EIX - NGK Iridium IX Spark Plugs
    739-CR7EIX
    Iridium IX Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR7HIX - NGK Iridium IX Spark Plugs
    739-CR7HIX
    Iridium IX Spark Plug
  • 10mm x 1/2" Reach
  • 5/8" Hex
  • Gasket seat
  • Sold Individually
  • $7.10
    Ships
    NGK Spark Plugs DPR7EIX-9 - NGK Iridium IX Spark Plugs
    739-DPR7EIX-9
    Iridium IX Spark Plug
  • 12mm x 3/4" Reach
  • 18mm Hex
  • Projected
  • Gasket seat
  • .036" Gap
  • Sold Individually
  • $9.99
    Order Today Ships 06/06/16
    NGK Spark Plugs DR7EIX - NGK Iridium IX Spark Plugs
    739-DR7EIX
    Iridium IX Spark Plug
  • 12mm x 3/4" Reach
  • 18mm Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs LFR7AIX - NGK Iridium IX Spark Plugs
    739-LFR7AIX
    Iridium IX Spark Plug
  • 14mm x 26.5mm Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    Medium-Cold Heat Range
    NGK Spark Plugs BPR8HIX - NGK Iridium IX Spark Plugs
    739-BPR8HIX
    Iridium IX Spark Plug
  • 14mm x 1/2" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • Was: $8.99
    Now: $5.99
    Ships
    NGK Spark Plugs BR8EIX - NGK Iridium IX Spark Plugs
    739-BR8EIX
    Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Ships
    NGK Spark Plugs BR8HIX - NGK Iridium IX Spark Plugs
    739-BR8HIX
    Iridium IX Spark Plug
  • 14mm x 1/2" Reach
  • 13/16" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR8EHIX-9 - NGK Iridium IX Spark Plugs
    739-CR8EHIX-9
    Iridium IX Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex (partial thread)
  • Gasket seat
  • .036" Gap
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR8EIB-10 - NGK Iridium IX Spark Plugs
    739-CR8EIB-10
    Iridium IX Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex (partial thread)
  • Resistor
  • Gasket seat
  • .040" Gap
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR8EIX - NGK Iridium IX Spark Plugs
    739-CR8EIX
    Iridium IX Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs CR8HIX - NGK Iridium IX Spark Plugs
    739-CR8HIX
    Iridium IX Spark Plug
  • 10mm x 1/2" Reach
  • 5/8" Hex
  • Gasket seat
  • Sold Individually
  • $8.99
    Order Today Ships 06/06/16
    NGK Spark Plugs DCPR8EIX - NGK Iridium IX Spark Plugs
    739-DCPR8EIX
    Iridium IX Spark Plug
  • 12mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • $7.10
    Ships

    72 Products Prev | Page: 1 2 3 ... |  Next Results per Page: