Spark Plug — 14 mm, 11.1 mm reach, 0.7 mm gap

NGK SPARK PLUGS Spark Plug — 14 mm, 11.1 mm reach, 0.7 mm gap – 54-56 Model K, 57-59, 72-85 Sportster

NGK SPARK PLUGS
B6L
3212
Reliable spark plug featuring trivalent metal plating, an alumina silicate ceramic insulator, triple seals, corrugated ribs and a copper core for improved heat removal.
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Dependable ignition performance for a wide range of small engines and motorcycles. 🔥

Engineered with a trivalent metal plating that provides superior anti-corrosion and anti-seizing protection, and a pure alumina silicate ceramic insulator for enhanced strength and heat transfer. 🛠️

  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
  • Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
  • Triple seals prevent leakage
  • Corrugated ribs prevent flashover
  • Copper core aids in heat removal

Designed for straightforward installation and reliable, repeatable spark performance under varied conditions.

: B6L
In Stock

Data sheet

Type
Non-Resistor
Units
Each
Style
Standard
Brand
NGK SPARK PLUGS
Thread Size
14 mm
Electrical Resistance
-
Center Electrode Type
Standard
Electrode Tip Material
Nickel Alloy
Ground Electrode Shape
Standard
Ground Electrode Configuration
Single
Heat Range
6
Terminal Configuration
Removable Nut
Center Electrode Projection
Non-Projected
Spark Gap
0.028"
0.7 mm
0.7 mm (0.028")
Hex Size
20.6 mm (13/16")
Thread Reach
11.1 mm (7/16")
Harley Family
Sportster
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Model K Model K 1954
Harley Davidson Model K Model K 1955
Harley Davidson Model K Model K 1956
Harley Davidson Model K Model K 1955
Harley Davidson Model K Model K 1956
Harley Davidson Sportster Sportster 1957
Harley Davidson Sportster Sportster 1958
Harley Davidson Sportster Sportster 1959
Harley Davidson Sportster Sportster 1972
Harley Davidson Sportster Sportster 1973
Harley Davidson Sportster Sportster 1974
Harley Davidson Sportster Sportster 1975
Harley Davidson Sportster Sportster 1976
Harley Davidson Sportster Sportster 1977
Harley Davidson Sportster Sportster 1978
Harley Davidson Cafe Racer Sportster 1977
Harley Davidson Cafe Racer Sportster 1978
Harley Davidson Sportster Sportster 1972
Harley Davidson Sportster Sportster 1973
Harley Davidson Sportster Sportster 1974
Harley Davidson Sportster Sportster 1975
Harley Davidson Sportster Sportster 1976
Harley Davidson Sportster Sportster 1977
Harley Davidson Sportster Sportster 1978
Harley Davidson Sportster Sportster 1979
Harley Davidson Sportster Sportster 1980
Harley Davidson Sportster Sportster 1981
Harley Davidson Sportster Sportster 1982
Harley Davidson Sportster Sportster 1983
Harley Davidson Sportster Sportster 1984
Harley Davidson Sportster Sportster 1985
Harley Davidson Roadster Sportster 1978
Harley Davidson Roadster Sportster 1979
Harley Davidson Roadster Sportster 1980
Harley Davidson Roadster Sportster 1981
Harley Davidson Roadster Sportster 1982
Harley Davidson Roadster Custom Sport Sportster 1983
Harley Davidson Roadster Sportster 1984
Harley Davidson Roadster Sportster 1985
Harley Davidson Sportster Sportster 1977
Harley Davidson Sportster Sportster 1978