NGK
More Information for NGK 3811
{Alternate Inventory Numbers: ILTR5A13G}
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NGK 3811 Specifications
Center Electrode Core MaterialCopper Core
Center Electrode Tip MaterialIridium
Gap Size0.052 in
Ground Electrode Quantity1
Hex Size5/8"
Insulator HeightISO
Manufacturer Heat Range5
Additional Info5K Ohm
Seat TypeTapered
Reach25mm
Thread Diameter14 MM
Ground Electrode Tip DesignStandard
Ground ConfigurationStandard
Ground Electrode Core MaterialCopper Core
Laser Iridium; Pre-Set Gap: 0.052"
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: AI5363, AI5863, XP5363, XP5364, XP5863

Warranty Information:
60 Days