NGK (LFR6BHX) Ruthenium HX Spark Plug Subaru WRX/STI/Impreza/Outback - Box of 4 | 93420

Product Description

Fitment Information:

2004-2006 Subaru Baja

2004-2013 Subaru Forester

2004-2014 Subaru Impreza

2005-2019 Subaru Legacy

2005-2019 Subaru Outback

2013-2014 Subaru WRX

2013-2018 Subaru WRX STI

Features:

Sold as a set of 4 spark plugs

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

0.4mm Ruthenium alloy fine-wire center electrode and 0.8mm platinum fine-wire ground electrode

Copper core aids in heat removal

Longevity: 60-120k Miles

60 Days manufacturer Warranty

ShellSpark Plug Thread Diameter: 14mmThread Pitch: 1.25mmSeat Type: FlatReach: 26.5mm (1.04")Wrench Diameter: 5/8" (16mm)Terminal Type: SolidGap: .031" (0.8mm)

Center ElectrodeElectrode Tip Material: RutheniumElectrode Core Material: Copper

Ground ElectrodeMaterial: CopperType: StandardShape: Taper Cut

SpecificationsResistor: YesResistor Value: 5k OhmManufacturer Heat Range: 6Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6lb. ft.

NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions. 0.4mm Ruthenium alloy fine wire center electrode and 0.8mm platinum fine wire ground electrode. Trivalent metal platinum 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.

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