Quick view NGK NGK- Iriduim Spark Plugs 6510 (2015+ Mustang Ecoboost) Set Of 4 (1) Perfect for nitrous and force inducted engines ( 1 step colder then stock) Iridium tip for a constant stable spark Improves fuel economy and lower emissions NGK part# LTR7IX-11; NGK stock# 6510 14mm thread pattern Set of 4 Spark Plugs (1) MSRP: $43.96 Add to Cart The item has been added Compare
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