Buyer's Guide : NGK 7913 Spark Plug
DODGECHALLENGER2015-2020
DODGECHARGER2015-2020
JEEPGRAND CHEROKEE2018-2021
RAM15002021
SUBARUFORESTER2009-2013
SUBARUIMPREZA2008-2014
SUBARULEGACY2005-2009
SUBARUOUTBACK2005-2009
SUBARUTRIBECA2008-2009
SUBARUWRX2014-2015
SUBARUWRX STI2014-2018




NGK 7913 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialIridium
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).032
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignSquare Platinum Electrode - High Ignitability
Hex Size (IN)5/8
Insulator Height (mm)50.50
Manufacturer Heat Range6
Part NumberSILFR6A
Reach (mm)26.5
Resistance (ohms)5000
Seat TypeFlat
Stock Number7913
Thread Diameter (MM)14.00


Laser Iridium High Ignitability; Pre-Set Gap: 0.032"
Features & Benefits:
  • Platinum disc welded to backside of ground electrode provides long life
  • Trivalent Metal Plating for superior anti-corrosion and anti-seizing
  • Consistent and stable spark
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions
Which NGK Spark Plug Is Right For You?

Material / SeriesLifespan / DurabilityPerformance / IgnitabilityEfficiency / Fuel Economy
Copper / Nickel V-Power
Copper		★★★
Platinum G-Power
Platinum		★★★★★★★
Double Platinum Laser
Double Platinum		★★★★★★★★★
Iridium IX
Iridium IX		★★★★★★★★★★
Iridium Laser
Iridium Laser		★★★★★★★★★★★★★
Ruthenium HX
Ruthenium		★★★★★★★★★★★★★★★★
Videos

Check, Set & Adjust Spark Plug Gaps

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OEM / Interchange Numbers: 22401AA670