NGK Iridium IX Spark Plugs (8pc) for Mustang 5.0L/5.2L 2011-23 | #6509/LTR6IX-11

SKU: 6509-NGK(x2)
Availability: In Stock
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Iridium IX Spark Plugs (Set of 8) 
for Ford Mustang 5.0L GT & 5.2L GT350/GT350R 2011-23

Manufactured by NGK | Part #6509/LTR6IX-11

NGK logo

These high-performance spark plugs from NGK offer a plethora of benefits for 2011-23 Mustangs with a 5.0L Engine and 2015-20 Mustangs with a 5.2L Engine.


  • Sold as a Set of Eight (8)
  • OE Heat Range
  • Designed for Naturally Aspirated Engines
  • Iridium Alloy Construction
  • Trivalent Metal Plating
  • Provides Consistently Stable Spark
  • Extremely High Melting Point
  • Increased Acceleration and Fuel Efficiency

Perfect for increasing acceleration while providing greater fuel efficiency and extreme ignitability. The spark plugs remain in the stock heat range, making them the ideal choice for your naturally aspirated engine.

The set includes eight spark plugs to take your engine to the next level. Offering impressive durability, the spark plugs feature trivalent metal plating that produces anti-corrosion and anti-seizing properties. Meanwhile, a fine iridium tip ensures further dependability.

Please Note: These spark plugs are designed for Naturally Aspirated use ONLY. Forced Induction and/or Nitrous Applications, please speak to us for further recommendations.

These plugs are not pre-gapped: 

For 2011-2018 (Coyote engines) Recommended Gap: 0.049-0.053 

Vehicle Application:

  • Ford Mustang 5.0L GT 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
  • Ford Mustang 5.2L GT350/GT350R 2015, 2016, 2017, 2018, 2019, 2020, 2021

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