Iridium IX Spark Plug — 19.1 mm reach, 14 mm thread, 1.1 mm gap

NGK SPARK PLUGS Iridium IX Spark Plug — 19.1 mm reach, 14 mm thread, 1.1 mm gap – 75-86 Big Twin, 79-98 Touring, 85-99 Softail, 91-00 Dyna, 82-94 FXR, 99-00 CVO, 84 Police

NGK SPARK PLUGS
BPR5EIX11
2115

High-performance iridium spark plug for improved ignition efficiency and longer ignition-system life.

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Iridium IX Spark Plug delivers the ultimate evolution in spark plug technology and performance. ⚡️

  • The iridium electrode is significantly smaller than conventional electrodes, improving ignition efficiency.
  • Ultra-small center electrode reduces voltage requirement and extends ignition system life.
  • New metal shell plating provides enhanced anti-corrosion protection for long-term reliability.
: BPR5EIX11
In Stock

Data sheet

Type
Resistor
Units
Each
Style
Iridium IX
Brand
NGK SPARK PLUGS
Thread Size
14 mm
Electrical Resistance
5k Ohms
Center Electrode Type
Necked Down
Electrode Tip Material
Iridium
Ground Electrode Shape
Grooved
Ground Electrode Configuration
Single
Heat Range
5
Terminal Configuration
Solid Terminal
Center Electrode Projection
Projected
Spark Gap
0.043"
1.1 mm
1.1 mm (0.043")
Hex Size
19 mm (3/4")
Thread Reach
19,1 mm (3/4")
Harley Family
CVO
Dyna
FXR
Softail
Touring
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 Electra Glide Big Twin 1975
Harley Davidson Electra Glide Big Twin 1976
Harley Davidson Electra Glide Big Twin 1977
Harley Davidson Electra Glide Big Twin 1975
Harley Davidson Electra Glide Big Twin 1976
Harley Davidson Electra Glide Big Twin 1977
Harley Davidson Electra Glide Big Twin 1978
Harley Davidson Electra Glide Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Big Twin 1981
Harley Davidson Electra Glide Big Twin 1982
Harley Davidson Electra Glide Big Twin 1983
Harley Davidson Electra Glide Belt Drive Big Twin 1984
Harley Davidson Electra Glide Classic Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Classic Big Twin 1981
Harley Davidson Electra Glide Classic Big Twin 1982
Harley Davidson Electra Glide Classic Big Twin 1983
Harley Davidson Road King Touring 1994
Harley Davidson Road King Touring 1995
Harley Davidson Road King Touring 1996
Harley Davidson Road King Touring 1997
Harley Davidson Road King Touring 1998
Harley Davidson Road King Classic Touring 1998
Harley Davidson Road King Touring 1996
Harley Davidson Road King Touring 1997
Harley Davidson Electra Glide Sport Touring 1979
Harley Davidson Electra Glide Sport Touring 1980
Harley Davidson Electra Glide Sport Touring 1988
Harley Davidson Electra Glide Sport Touring 1989
Harley Davidson Electra Glide Sport Touring 1990
Harley Davidson Electra Glide Sport Touring 1991
Harley Davidson Electra Glide Sport Touring 1992
Harley Davidson Electra Glide Sport Touring 1993
Harley Davidson Electra Glide Touring 1983
Harley Davidson Electra Glide Touring 1984
Harley Davidson Electra Glide Touring 1986
Harley Davidson Electra Glide Touring 1987
Harley Davidson Electra Glide Standard Touring 1996
Harley Davidson Electra Glide Standard Touring 1997
Harley Davidson Electra Glide Standard Touring 1998
Harley Davidson Electra Glide Classic Touring 1983
Harley Davidson Electra Glide Classic Touring 1986
Harley Davidson Electra Glide Classic Touring 1987
Harley Davidson Electra Glide Classic Touring 1988
Harley Davidson Electra Glide Classic Touring 1989
Harley Davidson Electra Glide Classic Touring 1990
Harley Davidson Electra Glide Classic Touring 1991
Harley Davidson Electra Glide Classic Touring 1992
Harley Davidson Electra Glide Classic Touring 1993
Harley Davidson Electra Glide Classic Touring 1994
Harley Davidson Electra Glide Classic Touring 1995
Harley Davidson Electra Glide Classic Touring 1996
Harley Davidson Electra Glide Classic Touring 1997
Harley Davidson Electra Glide Classic Touring 1998
Harley Davidson Electra Glide Classic Touring 1996
Harley Davidson Electra Glide Classic Touring 1997
Harley Davidson Electra Glide Classic Touring 1998
Harley Davidson Electra Glide Ultra Classic Touring 1989
Harley Davidson Electra Glide Ultra Classic Touring 1990
Harley Davidson Electra Glide Ultra Classic Touring 1991
Harley Davidson Electra Glide Ultra Classic Touring 1992
Harley Davidson Electra Glide Ultra Classic Touring 1993
Harley Davidson Electra Glide Ultra Classic Touring 1994
Harley Davidson Electra Glide Ultra Classic Touring 1995
Harley Davidson Electra Glide Ultra Classic Touring 1996
Harley Davidson Electra Glide Ultra Classic Touring 1997
Harley Davidson Electra Glide Ultra Classic Special Anniversary Edition Touring 1995
Harley Davidson Electra Glide Ultra Classic Touring 1996
Harley Davidson Electra Glide Ultra Classic Touring 1997
Harley Davidson Electra Glide Ultra Classic Touring 1998
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Heritage Softail Softail 1987
Harley Davidson Heritage Softail Softail 1988
Harley Davidson Heritage Softail Softail 1989
Harley Davidson Heritage Softail Softail 1990
Harley Davidson Heritage Softail Classic Softail 1988
Harley Davidson Heritage Softail Classic Softail 1989
Harley Davidson Heritage Softail Classic Softail 1990
Harley Davidson Heritage Softail Classic Softail 1991
Harley Davidson Heritage Softail Classic Softail 1992
Harley Davidson Heritage Softail Classic Softail 1993
Harley Davidson Heritage Softail Classic Softail 1994
Harley Davidson Heritage Softail Classic Softail 1995
Harley Davidson Heritage Softail Classic Softail 1996
Harley Davidson Heritage Softail Classic Softail 1997
Harley Davidson Heritage Softail Classic Softail 1998
Harley Davidson Heritage Softail Classic Softail 1999
Harley Davidson Fat Boy Softail 1990
Harley Davidson Fat Boy Softail 1991
Harley Davidson Fat Boy Softail 1992
Harley Davidson Fat Boy Softail 1993
Harley Davidson Fat Boy Softail 1994
Harley Davidson Fat Boy Softail 1995
Harley Davidson Fat Boy Softail 1996
Harley Davidson Fat Boy Softail 1997
Harley Davidson Fat Boy Softail 1998
Harley Davidson Fat Boy Softail 1999
Harley Davidson Heritage Softail Special/Nostalgia Softail 1993
Harley Davidson Heritage Softail Special/Nostalgia Softail 1994
Harley Davidson Heritage Softail Special/Nostalgia Softail 1995
Harley Davidson Heritage Softail Special/Nostalgia Softail 1996
Harley Davidson Heritage Softail Springer Softail 1997
Harley Davidson Heritage Softail Springer Softail 1998
Harley Davidson Heritage Softail Springer Softail 1999
Harley Davidson Tour Glide Touring 1980
Harley Davidson Tour Glide Touring 1981
Harley Davidson Tour Glide Touring 1982
Harley Davidson Tour Glide Touring 1983
Harley Davidson Tour Glide Classic Touring 1980
Harley Davidson Tour Glide Classic Touring 1981
Harley Davidson Tour Glide Classic Touring 1982
Harley Davidson Tour Glide Classic Touring 1983
Harley Davidson Tour Glide Classic Touring 1984
Harley Davidson Tour Glide Classic Touring 1985
Harley Davidson Tour Glide Classic Touring 1986
Harley Davidson Tour Glide Classic Touring 1987
Harley Davidson Tour Glide Classic Touring 1988
Harley Davidson Tour Glide Classic Touring 1989
Harley Davidson Tour Glide Classic Touring 1990
Harley Davidson Tour Glide Classic Touring 1991
Harley Davidson Tour Glide Ultra Classic Touring 1989
Harley Davidson Tour Glide Ultra Classic Touring 1990
Harley Davidson Tour Glide Ultra Classic Touring 1991
Harley Davidson Tour Glide Ultra Classic Touring 1992
Harley Davidson Tour Glide Ultra Classic Touring 1993
Harley Davidson Tour Glide Ultra Classic Touring 1994
Harley Davidson Tour Glide Ultra Classic Touring 1995
Harley Davidson Tour Glide Ultra Classic Touring 1996
Harley Davidson Road Glide Touring 1998
Harley Davidson Super Glide Big Twin 1975
Harley Davidson Super Glide Big Twin 1976
Harley Davidson Super Glide Big Twin 1977
Harley Davidson Super Glide Big Twin 1978
Harley Davidson Super Glide Big Twin 1979
Harley Davidson Sturgis Big Twin 1980
Harley Davidson Sturgis Big Twin 1981
Harley Davidson Sturgis Big Twin 1982
Harley Davidson Dyna Super Glide Dyna 1995
Harley Davidson Dyna Super Glide Dyna 1996
Harley Davidson Dyna Super Glide Dyna 1997
Harley Davidson Dyna Super Glide Dyna 1998
Harley Davidson Dyna Glide Sturgis Dyna 1991
Harley Davidson Dyna Glide Daytona Dyna 1992
Harley Davidson Dyna Glide Custom Dyna 1992
Harley Davidson Big Twin 1983
Harley Davidson Big Twin 1984
Harley Davidson Dyna Low Rider Dyna 1993
Harley Davidson Dyna Low Rider Dyna 1994
Harley Davidson Dyna Low Rider Dyna 1995
Harley Davidson Dyna Low Rider Dyna 1996
Harley Davidson Dyna Low Rider Dyna 1997
Harley Davidson Dyna Low Rider Dyna 1998
Harley Davidson Dyna Super Glide Convertible Dyna 1994
Harley Davidson Dyna Super Glide Convertible Dyna 1995
Harley Davidson Dyna Super Glide Convertible Dyna 1996
Harley Davidson Dyna Super Glide Convertible Dyna 1997
Harley Davidson Dyna Super Glide Convertible Dyna 1998
Harley Davidson Dyna Super Glide Convertible Dyna 1999
Harley Davidson Dyna Super Glide Convertible Dyna 2000
Harley Davidson Dyna Wide Glide Dyna 1993
Harley Davidson Dyna Wide Glide Dyna 1994
Harley Davidson Dyna Wide Glide Dyna 1995
Harley Davidson Dyna Wide Glide Dyna 1996
Harley Davidson Dyna Wide Glide Dyna 1997
Harley Davidson Dyna Wide Glide Dyna 1998
Harley Davidson Super Glide Big Twin 1975
Harley Davidson Super Glide Big Twin 1976
Harley Davidson Super Glide Big Twin 1977
Harley Davidson Super Glide Big Twin 1978
Harley Davidson Super Glide Big Twin 1979
Harley Davidson Super Glide Big Twin 1980
Harley Davidson Super Glide Big Twin 1981
Harley Davidson Super Glide Big Twin 1982
Harley Davidson Super Glide Big Twin 1983
Harley Davidson Super Glide Big Twin 1984
Harley Davidson Fat Bob Big Twin 1979
Harley Davidson Fat Bob Big Twin 1979
Harley Davidson Fat Bob Big Twin 1980
Harley Davidson Fat Bob Big Twin 1981
Harley Davidson Fat Bob Big Twin 1982
Harley Davidson Fat Bob Big Twin 1985
Harley Davidson Fat Bob Big Twin 1986
Harley Davidson Low Rider Custom FXR 1987
Harley Davidson Low Rider Custom FXR 1988
Harley Davidson Low Rider Custom FXR 1989
Harley Davidson Low Rider Custom FXR 1990
Harley Davidson Low Rider Custom FXR 1991
Harley Davidson Low Rider Custom FXR 1992
Harley Davidson Low Rider Custom FXR 1993
Harley Davidson Low Rider Custom FXR 1994
Harley Davidson Super Glide FXR 1986
Harley Davidson Super Glide FXR 1987
Harley Davidson Super Glide FXR 1988
Harley Davidson Super Glide FXR 1989
Harley Davidson Super Glide FXR 1990
Harley Davidson Super Glide FXR 1991
Harley Davidson Super Glide FXR 1992
Harley Davidson Super Glide FXR 1993
Harley Davidson Super Glide FXR 1994
Harley Davidson Super Glide II FXR 1982
Harley Davidson Super Glide II FXR 1983
Harley Davidson Super Glide II FXR 1984
Harley Davidson Super Glide Screamin Eagle CVO 1999
Harley Davidson Super Glide Screamin Eagle CVO 1999
Harley Davidson Super Glide Screamin Eagle CVO 2000
Harley Davidson Low Glide Custom FXR 1985
Harley Davidson Disc Glide FXR 1986
Harley Davidson Disc Glide Big Twin 1984
Harley Davidson Disc Glide Big Twin 1985
Harley Davidson Sport Glide Police Police 1984
Harley Davidson Low Glide FXR 1984
Harley Davidson Low Glide FXR 1985
Harley Davidson Low Rider FXR 1986
Harley Davidson Low Rider FXR 1987
Harley Davidson Low Rider FXR 1988
Harley Davidson Low Rider FXR 1989
Harley Davidson Low Rider FXR 1990
Harley Davidson Low Rider FXR 1991
Harley Davidson Low Rider FXR 1992
Harley Davidson Super Glide II FXR 1982
Harley Davidson Low Rider Convertible FXR 1989
Harley Davidson Low Rider Convertible FXR 1990
Harley Davidson Low Rider Convertible FXR 1991
Harley Davidson Low Rider Convertible FXR 1992
Harley Davidson Low Rider Convertible FXR 1993
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1987
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1988
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1989
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1990
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1991
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1992
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1993
Harley Davidson Sport Glide FXR 1984
Harley Davidson Sport Glide FXR 1985
Harley Davidson Sport Glide FXR 1986
Harley Davidson Sport Glide FXR 1987
Harley Davidson Sport Glide FXR 1988
Harley Davidson Sport Glide FXR 1989
Harley Davidson Sport Glide FXR 1990
Harley Davidson Sport Glide FXR 1991
Harley Davidson Sport Glide FXR 1992
Harley Davidson Low Rider Big Twin 1977
Harley Davidson Low Rider Big Twin 1978
Harley Davidson Low Rider Big Twin 1979
Harley Davidson Low Rider Big Twin 1979
Harley Davidson Low Rider Big Twin 1980
Harley Davidson Low Rider Big Twin 1981
Harley Davidson Low Rider Big Twin 1982
Harley Davidson Low Rider Big Twin 1983
Harley Davidson Low Rider Big Twin 1984
Harley Davidson Low Rider Big Twin 1985
Harley Davidson Softail Softail 1985
Harley Davidson Softail Softail 1986
Harley Davidson Softail Softail 1987
Harley Davidson Softail Softail 1988
Harley Davidson Softail Softail 1989
Harley Davidson Softail Softail 1990
Harley Davidson Softail Softail 1999
Harley Davidson Softail Night Train Softail 1998
Harley Davidson Softail Night Train Softail 1999
Harley Davidson Softail Custom Softail 1986
Harley Davidson Softail Custom Softail 1987
Harley Davidson Softail Custom Softail 1988
Harley Davidson Softail Custom Softail 1989
Harley Davidson Softail Custom Softail 1990
Harley Davidson Softail Custom Softail 1991
Harley Davidson Softail Custom Softail 1992
Harley Davidson Softail Custom Softail 1993
Harley Davidson Softail Custom Softail 1994
Harley Davidson Softail Custom Softail 1995
Harley Davidson Softail Custom Softail 1996
Harley Davidson Softail Custom Softail 1997
Harley Davidson Softail Custom Softail 1998
Harley Davidson Softail Springer Softail 1988
Harley Davidson Softail Springer Softail 1989
Harley Davidson Softail Springer Softail 1990
Harley Davidson Softail Springer Softail 1991
Harley Davidson Softail Springer Softail 1992
Harley Davidson Softail Springer Softail 1993
Harley Davidson Softail Springer Softail 1994
Harley Davidson Softail Springer Softail 1995
Harley Davidson Softail Springer Softail 1996
Harley Davidson Softail Springer Softail 1997
Harley Davidson Softail Springer Softail 1998
Harley Davidson Softail Springer Softail 1999
Harley Davidson Bad Boy Softail 1995
Harley Davidson Bad Boy Softail 1996
Harley Davidson Bad Boy Softail 1997
Harley Davidson Wide Glide Big Twin 1980
Harley Davidson Wide Glide Big Twin 1981
Harley Davidson Wide Glide Big Twin 1982
Harley Davidson Wide Glide Big Twin 1983
Harley Davidson Wide Glide Big Twin 1984
Harley Davidson Wide Glide Big Twin 1985
Harley Davidson Wide Glide Big Twin 1986