NGK
More Information for NGK 3971
{Alternate Inventory Numbers: BPR5EP11}
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NGK 3971  
$5.54
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$5.54
Total
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NGK 3971 Specifications
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialPlatinum
Electrical Terminal TypeNon-Removable Nut
Gap Size (IN).044
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 Range5
Part NumberBPR5EP-11
Reach (IN).75
Resistance (ohms)5000
Seat TypeFlat
Stock Number3971
Thread Diameter (MM)14.00
Laser Platinum; Pre-Set Gap: 0.044"
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: 64, 64BP, 64DP, 64DP2, 9091901116, 9091901116000, 9091901144, APP64

Warranty Information:
60 Days