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NGK Racing Spark Plugs


NGK Spark Plugs
NGK Racing Spark Plugs

Product images may differ from actual product appearance.


For many years, NGK Spark Plugs have been firing race engines to victory around the world. NGK knows that race vehicles are pushed to the edge so NGK designs every spark plug to withstand severe mechanical and thermal shock. You can be confident on the track because of NGK's dedication off the track. Sold individually.


NGK Racing Spark Plugs feature:

  • Fine-wire center electrodes for enhanced sparking and ignitability OR fine-wire ground electrodes for even better ignitability
  • Electrodes made with precious metals, such as platinum or gold/palladium, for lower voltage requirements & greater durability
  • Special insulator configurations for improved throttle response


  • 68 Products Results per Page:
    Extra Hot Heat Range

    739-R5670-5
    Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships
    Hot Heat Range

    739-R5670-6
    Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5673-6
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5674-6
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships
    Hot-Medium Heat Range

    739-R5670-7
    Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5671A-7
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5673-7
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5674-7
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships
    Medium Heat Range
      739-B8EGV
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Gold palladium
  • $8.99
    Ships

    739-BR8EG
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • Fine Wire Center Electrode
  • $5.99
    Order Today Ships 10/30/14

    739-BR8EG SOLID
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • Fine Wire Center Electrode
  • $9.99
    Ships

    739-R5670-8
    Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5671A-8
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5672A-8
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5673-8
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5674-8
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5724-8
    Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • $4.69
    Ships

    739-R6061-8
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • $10.99
    Order Today Ships 10/30/14

    739-R7376-8
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
  • $35.99
    Ships

    739-R7437-8
    Racing Resistor Spark Plug
  • 14mm x 26.5mm Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • Iridium
  • $44.99
    Ships
    Medium-Cold Heat Range

    739-B9EG
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" reach
  • 13/16" hex
  • Gasket Seat
  • Each
  • $4.69
    Ships

    739-B9EGV
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Gold palladium
  • $6.99
    Ships

    739-BR9EG
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • Fine Wire Center Electrode
  • $5.99
    Ships

    739-BR9EG-N-8
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • .032" Gap
  • $6.99
    Order Today Ships 10/30/14

    739-R2525-9
    Racing Resistor Spark Plug
  • 12mm x 3/4" Reach
  • 5/8" Hex
  • Gasket Seat
  • Platinum
  • $34.99
    Order Today Ships 10/30/14

    739-R4118S-9
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Non-Projected
  • Gasket Seat
  • $12.99
    Ships

    739-R5670-9
    Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5671A-9
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5672A-9
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5673-9
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5674-9
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5724-9
    Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • $4.69
    Ships

    739-R6061-9
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • $10.99
    Ships

    739-R6918C-9
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Platinum
  • Low Angle Ground Electrode
  • Gasket seat
  • $35.99
    Ships

    739-R7282-9
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Non-Projected
  • Gasket seat
  • $53.99
    Ships

    739-R7376-9
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
  • $35.99
    Order Today Ships 10/30/14

    739-R7438-9
    Racing Resistor Spark Plug
  • 14mm x 1.04" Reach
  • 5/8" Hex
  • Platinum
  • Non-Projected
  • Gasket Seat
  • $44.99
    Order Today Ships 10/30/14
    Cold Heat Range

    739-BR10EG
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • Fine Wire Center Electrode
  • $9.99
    Ships

    739-R0045Q-10
    Racing Surface Discharge Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • Non-Projected
  • Gasket Seat
  • $74.99
    Ships
      739-R0373A-10
    Racing Resistor Spark Plug
  • 10mm x 0.750" reach
  • 5/8" hex
  • Gasket Seat
  • Fine Wire Iridium Center Electrode
  • Platinum Tipped Angled Ground Electrode
  • Does not include terminal nut
  • $83.99
    Order Today Ships 10/30/14

    739-R2349-10
    Racing Resistor Spark Plug
  • 12mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • Solid Terminal Nut
  • $44.99
    Ships

    739-R2525-10
    Racing Resistor Spark Plug
  • 12mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • Platinun
  • $34.99
    Ships

    739-R5671A-10
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5672A-10
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5673-10
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Order Today Ships 10/27/14

    739-R5674-10
    Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R5724-10
    Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • $4.69
    Ships

    739-R6061-10
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • $9.99
    Order Today Ships 10/27/14
      739-R6252E-105
    Racing Resistor Spark Plug
  • 14mm x 3/4" reach
  • 13/16" hex
  • Gasket Seat
  • Nickel Alloy Fine Wire Center and Ground Electrodes
  • $10.99
    Ships
      739-R6601-10
    Racing Resistor Spark Plug
  • 14mm x 3/4" reach
  • 5/8" hex
  • Gasket Seat
  • Surface Discharge
  • Solid Terminal Nut
  • $26.99
    Ships

    739-R6725-105
    Racing Resistor Spark Plug
  • 14mm x 21.5mm Reach
  • 13/16" Hex
  • Gasket seat
  • Platinum
  • $34.99
    Ships

    739-R7282-10
    Racing Resister Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket Seat
  • .024" Gap
  • $44.99
    Ships

    739-R7282-105
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket Seat
  • Fine Wire Iridium Center Electrode
  • Platinum Tipped Angled Ground Electrode
  • $44.99
    Order Today Ships 10/30/14

    739-R7376-10
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
  • $35.99
    Order Today Ships 10/30/14
      739-R7434-10
    Racing Resistor Spark Plug
  • 14mm x 3/4" reach
  • 5/8" hex
  • Gasket Seat
  • Iridium Tipped Center Electrode
  • Fine Wire Angled Ground Electrode
  • $44.99
    Ships

    739-R7436-10
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Iridium
  • JIS, Low Angle Ground Electrode
  • Gasket seat
  • $44.99
    Ships
      739-R847-11
    Racing Resistor Spark Plug
  • 8mm x 3/4" reach
  • 1/2" hex
  • Gasket Seat
  • Surface gap
  • Does not Include Terminal Nut
  • $26.99
    Order Today Ships 10/30/14
    Extra Cold Heat Range

    739-R0045Q-11
    Racing Surface Discharge Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • Non-Projected
  • Gasket Seat
  • $73.99
    Ships

    739-R0373A-11
    Racing Resistor Spark Plug
  • 10mm x 3/4" Reach
  • 5/8" Hex
  • Non-Projected
  • Gasket seat
  • $83.99
    Ships

    739-R5671A-11
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
  • $4.69
    Ships

    739-R6061-11
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Non-Projected
  • Gasket seat
  • $9.99
    Ships

    739-R6179A-105P
    Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • $44.99
    Ships

    739-R6254E-105
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • $9.99
    Ships

    739-R6254K-105
    Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket Seat
  • $9.99
    Ships
      739-R6601-11
    Racing Resistor Spark Plug
  • 14mm x 3/4" reach
  • 5/8" hex
  • Gasket Seat
  • Surface Discharge
  • Solid Terminal Nut
  • $20.99
    Ships
      739-R6725-11
    Racing Resistor Spark Plug
  • 14mm x 21.5mm reach
  • 13/16" hex
  • Gasket seat
  • Platinum
  • $34.99
    Ships

    739-R6725-115
    Racing Resistor Spark Plug
  • 14mm x 21.5mm Reach
  • 13/16" Hex
  • Gasket seat
  • Platinum
  • $37.99
    Ships
      739-R7440B-11T
    Racing Resistor Spark Plug
  • 14mm x 3/4" reach
  • 13/16" hex
  • Gasket Seat
  • Low Angled Ground Electrode
  • Iridium Center Electrode
  • Platinum Tipped Ground Electrode
  • $73.99
    Ships

    68 Products Results per Page: