NGK
More Information for NGK 91039
{Alternate Inventory Numbers: IFR7X7G}
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NGK 91039  
$8.44
Price
 $0.00
Core
 + Sold in packs of 1x1
Pack
 $8.44
Total
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NGK 91039 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialIridium
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).028
Ground ConfigurationStandard
Ground Electrode Core MaterialCopper
Ground Electrode Quantity1
Ground Electrode Tip DesignStandard
Hex Size (IN)5/8
Insulator Height (mm)50.50
Manufacturer Heat Range7
Part NumberIFR7X7G
Reach (IN).75
Resistance (ohms)6000
Seat TypeFlat
Stock Number91039
Thread Diameter (MM)14.00
Laser Iridium; Pre-Set Gap: 0.028"
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 / Series Lifespan / Durability Performance / Ignitability Efficiency / 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

OEM / Interchange Numbers: 55576026, 55585517, AI3922, XP3922, XS3922

Warranty Information:
60 Days