NGK
More Information for NGK 6378
{Alternate Inventory Numbers: PMR8B}
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NGK 6378  
($10.91/Each)
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 $0.00
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NGK 6378 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).028
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignStandard
Hex Size (IN)5/8
Insulator Height (mm)50.00
Manufacturer Heat Range8
Part NumberPMR8B
Reach (IN).75
Resistance (ohms)5000
Seat TypeFlat
Stock Number6378
Thread Diameter (MM)10.00
Laser Platinum; Pre-Set Gap: 0.028"
Laser Platinum® spark plugs provide high ignitability and longer service life. Dual platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions.

Features & Benefits:
  • Laser welded Platinum center electrode tip
  • Platinum disc welded to backside of ground electrode provides long life
  • Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties
  • 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: 168325, 192637, 5851, XS4303

Warranty Information:
60 Days