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NGK IRIDIUM IX Spark Plugs 6509 (Pre-Gapped) - 2011-2020 F150/Mustang GT 5.0L

IRIDIUM IX (LTR6IX-11) 6509 - STOCK HEAT RANGE

IRIDIUM IX (LTR6IX-11) 6509 ULTIMATE PERFORMANCE FOR 2011-2020 5.0L

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.

  • Set of 8
  • Pre-gapped to .044"
  • Fine iridium tip ensures high durability and a consistently stable spark.
  • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines.
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
  • Tapered ground electrode increases ignitability and minimizes quenching.
  • High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through (caused by spark exiting through side of ceramic).
  • Cold-rolled threads prevent cross-threading and damage to cylinder heads.
  • Outstanding acceleration, high fuel efficiency and durability.
  • Ultimate design, technology and performance.
  • Heat range 6.

Before you order, click the tabs and read the important, but maybe not so exciting stuff.

DESCRIPTION

IRIDIUM IX (LTR6IX-11) 6509 ULTIMATE PERFORMANCE FOR 2011-2020 5.0L

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.

  • Set of 8
  • Pre-gapped to .044"
  • Fine iridium tip ensures high durability and a consistently stable spark.
  • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines.
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
  • Tapered ground electrode increases ignitability and minimizes quenching.
  • High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through (caused by spark exiting through side of ceramic).
  • Cold-rolled threads prevent cross-threading and damage to cylinder heads.
  • Outstanding acceleration, high fuel efficiency and durability.
  • Ultimate design, technology and performance.
  • Heat range 6.

No Sales to California

We are not selling any products to CA. Any orders with CA billing or shipping will be cancelled minus a 5% fee and refunded.


NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. THE SALE, USE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3)).

SKU: ngk6509
$76.00
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DESCRIPTION

IRIDIUM IX (LTR6IX-11) 6509 ULTIMATE PERFORMANCE FOR 2011-2020 5.0L

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.

  • Set of 8
  • Pre-gapped to .044"
  • Fine iridium tip ensures high durability and a consistently stable spark.
  • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines.
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
  • Tapered ground electrode increases ignitability and minimizes quenching.
  • High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through (caused by spark exiting through side of ceramic).
  • Cold-rolled threads prevent cross-threading and damage to cylinder heads.
  • Outstanding acceleration, high fuel efficiency and durability.
  • Ultimate design, technology and performance.
  • Heat range 6.