More Information for NGK 6427
{Alternate Inventory Numbers: BPR6EY}
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NGK 6427  
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NGK 6427 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialNickel
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).032
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignStandard
Hex Size (IN)13/16
Insulator Height (mm)55.00
Manufacturer Heat Range6
Part NumberBPR6EY
Reach (IN).75
Resistance (ohms)5000
Seat TypeFlat
Stock Number6427
Thread Diameter (MM)14.00
V-Power; Pre-Set Gap: 0.032"
V-Power Spark Plugs are named for their specially designed v-groove center electrode to improve ignitability. Tested to the highest original equipment standards, these plugs are crucial for vehicle maintenance.

Features & Benefits:
  • Cold-rolled threads prevent cross-threading and damage to cylinder heads
  • Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties (eliminates need for anti-seize)
  • High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through (caused by spark exiting through side of ceramic)
  • 98% pure copper core increases heat dissipation for reliable starts and prevents spark plug overheating
  • 90 degree V-Groove center electrode allows the spark to occur closer to the outside of both the center and ground electrodes for better flame expansion, reducing quenching and improving ignitability
This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within 0.004" of OE-Recommended value.
Which NGK Spark Plug Is Right For You?

Material / Series Lifespan / Durability Performance / Ignitability Efficiency / Fuel Economy
Copper / Nickel V-Power
Platinum G-Power
★★ ★★★★
Double Platinum Laser
Double Platinum
★★★★★ ★★ ★★
Iridium IX
Iridium IX
★★★ ★★★★★ ★★
Iridium Laser
Iridium Laser
★★★★★★ ★★★★ ★★★
Ruthenium HX
★★★★★★★ ★★★★★ ★★★★

Check, Set & Adjust Spark Plug Gaps

OEM / Interchange Numbers: 63, 9004851059, 9079320067, 9091901098, 9807956946, B240189909

Warranty Information:
60 Days