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Mazdaspeed NGK 1-Step Colder Spark Plugs - Set of 4

List price: $39.99  
Price: $29.99
You save: $10.00 (25%)
Price in points:  What are Points? 30 points
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GEN-6-147-10
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*** Gapping tools not included, shown for demonstration purposes only. ***

One of the most crucial components of the engine are the spark plugs! Much like the HPFP internals, correct heat range and high quality spark plugs are needed when modifying your Mazdaspeed for higher than OEM power levels. With increased boost pressure and turbo sizes, a 1-step colder spark plug is recommended for peak performance.

CorkSport is helping you take the guess work out of choosing the proper spark plug for your Mazdaspeed build. CorkSport now has pre-gapped NGK 1-step colder plugs ready to buy with your other CorkSport goodies.

Genuine NGK part no. LTR7IX-11

Inspected and pre-gapped to 0.026 inches – the community proven and recommended gap for stock to approximately 450whp builds. For higher horsepower builds discuss the proper gap with your professional tuner. #ZoomZoom!


  • Sold in Sets of 4 Spark Plugs
  • Inspected and pre-gapped to 0.026 inches - recommended gap for stock to approximately 450whp builds. For higher horsepower builds discuss the proper gap with your professional tuner.

Additional Features

  • Vehicle Fitment: 2007-2013 Mazdaspeed 3, 2006-2007 Mazdaspeed 6, 2007-2012 Mazda CX-7 Turbo.
  • CorkSport Service & Support: knowledgeable telephone support at (360) 260-2675.

30 Min Install Time

30 Min Install Time

Difficulty: 1/5

1/5 Difficulty

No CEL

No CEL

No FAQ found

Mazda performance parts financing is available with CorkSport

Looking to finance your parts purchase and want to get 6 months NO interest on any purchase over $199? Click on the image above for more details.

2007-2013 Mazdaspeed 3
2007-2013 MPS 3
2006-2007 Mazdaspeed 6
2005-2007 MPS 6
2007-2012 Cx7 Turbo