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



    		•
    Extra Hot Heat Range
    NGK Spark Plugs R5670-5 - NGK Racing Spark Plugs
         		739-R5670-5
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    Hot Heat Range
    NGK Spark Plugs R5670-6 - NGK Racing Spark Plugs
         		739-R5670-6
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5673-6 - NGK Racing Spark Plugs
         		739-R5673-6
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5674-6 - NGK Racing Spark Plugs
         		739-R5674-6
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    Hot-Medium Heat Range
    NGK Spark Plugs R5670-7 - NGK Racing Spark Plugs
         		739-R5670-7
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5671A-7 - NGK Racing Spark Plugs
         		739-R5671A-7
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5673-7 - NGK Racing Spark Plugs
         		739-R5673-7
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5674-7 - NGK Racing Spark Plugs
         		739-R5674-7
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R7376-7 - NGK Racing Spark Plugs
         		739-R7376-7
    		Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
    		• $31.99
    Ships
    in 3 days
    Medium Heat Range
      739-B85EGV
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Gold palladium
  • .059" Gap
    		• $9.99
    Ships
    in 3 days
      739-B8EGV
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Gold palladium
    		• $5.99
    Ships
    in 3 days
    NGK Spark Plugs R5670-8 - NGK Racing Spark Plugs
         		739-R5670-8
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
      739-R5671A-8
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
      739-R5672A-8
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5673-8 - NGK Racing Spark Plugs
         		739-R5673-8
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5674-8 - NGK Racing Spark Plugs
         		739-R5674-8
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5724-8 - NGK Racing Spark Plugs
         		739-R5724-8
    		Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R6061-8 - NGK Racing Spark Plugs
         		739-R6061-8
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
    		• $7.99
    Ships
    in 3 days
    NGK Spark Plugs R7376-8 - NGK Racing Spark Plugs
         		739-R7376-8
    		Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
    		• $31.99
    Ships
    in 3 days
    NGK Spark Plugs R7433-8 - NGK Racing Spark Plugs
         		739-R7433-8
    		Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • ISO projected
  • Gasket seat
  • Iridium
    		• $45.99
    Ships
    in 3 days
    NGK Spark Plugs R7437-8 - NGK Racing Spark Plugs
         		739-R7437-8
    		Racing Resistor Spark Plug
  • 14mm x 26.5mm Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • Iridium
    		• $45.99
    Ships
    in 3 days
    Medium-Cold Heat Range
      739-B9EGV
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Gold palladium
    		• $4.69
    Ships
    Monday
    NGK Spark Plugs R5670-9 - NGK Racing Spark Plugs
         		739-R5670-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
      739-R5671A-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
      739-R5672A-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5673-9 - NGK Racing Spark Plugs
         		739-R5673-9
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5674-9 - NGK Racing Spark Plugs
         		739-R5674-9
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5724-9 - NGK Racing Spark Plugs
         		739-R5724-9
    		Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5883-9 - NGK Racing Spark Plugs
         		739-R5883-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Surface discharge
  • Gasket seat
    		• $66.99
    Ships
    in 3 days
    NGK Spark Plugs R6061-9 - NGK Racing Spark Plugs
         		739-R6061-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
    		• $7.99
    Ships
    in 3 days
    NGK Spark Plugs R7376-9 - NGK Racing Spark Plugs
         		739-R7376-9
    		Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
    		• $31.99
    Ships
    in 3 days
    NGK Spark Plugs R7435-9 - NGK Racing Spark Plugs
         		739-R7435-9
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • Iridium
    		• $36.99
    Ships
    Monday
    Cold Heat Range
    NGK Spark Plugs R5671A-10 - NGK Racing Spark Plugs
         		739-R5671A-10
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
      739-R5672A-10
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Projected
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5673-10 - NGK Racing Spark Plugs
         		739-R5673-10
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5674-10 - NGK Racing Spark Plugs
         		739-R5674-10
    		Racing Non-Resistor Spark Plug
  • 14mm x .460" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R5724-10 - NGK Racing Spark Plugs
         		739-R5724-10
    		Racing Non-Resistor Spark Plug
  • 14mm x .708" Reach
  • 5/8" Hex
  • Projected
  • Tapered seat
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R6061-10 - NGK Racing Spark Plugs
         		739-R6061-10
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
    		• $6.99
    Ships
    Monday
    NGK Spark Plugs R6725-105 - NGK Racing Spark Plugs
         		739-R6725-105
    		Racing Resistor Spark Plug
  • 14mm x 21.5mm Reach
  • 13/16" Hex
  • Gasket seat
  • Platinum
    		• $34.99
    Ships
    in 3 days
    NGK Spark Plugs R7376-10 - NGK Racing Spark Plugs
         		739-R7376-10
    		Racing Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Gasket seat
  • Iridium
    		• $31.99
    Ships
    in 3 days
    Extra Cold Heat Range
    NGK Spark Plugs R5671A-11 - NGK Racing Spark Plugs
         		739-R5671A-11
    		Racing Non-Resistor Spark Plug
  • 14mm x 3/4" Reach
  • 5/8" Hex
  • Gasket seat
  • V-groove center electrode
    		• $2.69
    Ships
    Monday
    NGK Spark Plugs R6725-115 - NGK Racing Spark Plugs
         		739-R6725-115
    		Racing Resistor Spark Plug
  • 14mm x 21.5mm Reach
  • 13/16" Hex
  • Gasket seat
  • Platinum
    		• $31.99
    Ships
    in 3 days

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