NGK 6509 LTR6IX-11 Iridium IX Spark Plug (Stock Heat Range) (Set of 8) - 6509 2015-2017 Ford Mustang GT , F150 & 2014-2024 Silverado, Sierra 1500

Features:

• 1 Steps Colder (LT Engines)
• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs prevent flashover
• Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage

Shell:

• Thread Diameter: 14mm
• Thread Pitch: 1.25mm
• Seat Type: Tapered
• Reach: 25mm (1")
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid
• Overall Height: ISO
• Gap: .043" (1.1mm)

Center Electrode:

• Material: Iridium
• Type: Fine Wire
• Size: 0.6mm
• Projection: Projected

Ground Electrode:

• Material: Nickel
• Type: Standard
• Shape: Taper Cut
• Quantity: 8

Specifications:

• Resistor: Yes
• Resistor Value: 5k Ohm
• Heat Range: 6
• Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.

Part Information:

• Brand: NGK/NTK
• Warranty: 60 Days
• Longevity: 50k Miles

NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines.

NGK LTR6IX (Part #6509)

This is the stock heat range for older 5.0L Coyotes and many modern V6 models. It is also used as a hotter plug for some Silverado engines.

Chevrolet / GMC:

• Silverado / Sierra 1500 (5.3L L83/L84): 2014–2024 (Stock Heat Range)
• Camaro (3.6L V6): 2010–2015 (Stock Heat Range)

Ford:

• Mustang GT (5.0L Gen 2): 2015–2017 (Stock Heat Range)
• Shelby GT350 (5.2L Voodoo): 2015–2020 (Stock Heat Range)
• F-150 (5.0L Coyote): 2015–2017 (Stock Heat Range)

Part Number: LTR6IX-11 6509