Description
Race car drivers will tell you that the single sharp edge on spark plug electrodes wears out too fast for long term use. The E3 DiamondFire design presents multiple sharp edges to the circular sharp edge of the center electrode, which allows the spark to naturally seek the path of least resistance. The problem is that each time a spark jumps between two opposing spots of the electrode pair, the local resistance increases. After a few sparks, the local resistance becomes so high that the spark seeks alternate sites to initiate from and land on.
Multiple sharp edges give the spark more paths to follow, thus reducing wear on each part of the electrode. The E3 prototypes we tested outlasted all non-platinum spark plug in longevity even though they were made from mild steel. For production plugs, we use a special high-temperature alloy with a high nickel content plus additional elements to make an extremely long-lived electrode pair.
The E3 design also keeps its “freshness” much longer than standard plugs. DiamondFire plugs create more power while using less fuel (brake specific fuel consumption) than any other design. During our testing, we discovered that standard plugs degrade quickly, losing up to 10% of their power after just 50 hours of use (about 1, 200 miles in a typical car). This is why race car drivers change spark plugs between heats: The multiple sharp edges of the E3 DiamondFire design create better combustion when new and keep their edge “sharpness” for a considerable time.
Additionally, the three legs that support the special geometry of our design move heat out of the ground electrode, which helps the electrode last longer. The center electrodes are forged with a copper center core surrounded by a nickel alloy sheath and tip. The copper pulls heat out of the center electrode’s tip, which also helps durability. The copper core is virtually equal to platinum in extending electrode life.
Features:
E3 Spark Plug Flame Kernel Shape:
Flame moves toward piston and bulk air/fuel mixture – less quenching on cylinder walls
Reduced time delay in flame growth – shorter path to piston head
Faster flame growth compared to standard plugs
Larger flame kernel moves heat faster into combustion chamber
Larger flame front creates more localized pressure, making a faster pressure rise in cylinder during the power stroke
Vehicle Applications:
1969-1973 BMW R50/5
1969-1973 BMW R75/5
1975-1984 Harley Davidson FXE Super Glide
1978-1995 BMW R100RT
1980-1981 Yamaha XS1100L Mid-Special
1980-1982 Harley Davidson FXB Sturgis
1982-1983 Yamaha XV920 Virago
1983-1983 Yamaha XJ750M Mid-Max
1983-1998 Harley Davidson FLHTC Electra Glide Classic
1973-1975 Harley Davidson Z90
1973-1976 BMW R90/6
1976-1977 BMW R75/7
1976-1984 BMW R80/7
1978-1979 Yamaha XS400-2
1978-1983 Yamaha XS650S Special
1980-1986 Harley Davidson FXWG Wide Glide
1982-1984 BMW R80ST
1982-1992 Harley Davidson FXRS Low Glide
1983-1983 Yamaha XV920M Mid-Virago
1973-1976 BMW R90S
1976-1977 Yamaha XS360
1977-1977 Yamaha XS360-2
1977-1982 Harley Davidson FXS Low Rider
1978-1984 BMW R100T
1978-1987 BMW R65
1979-1982 Kawasaki KZ1300
1979-1985 Harley Davidson FXEF Fat Bob
1980-1981 Suzuki TS185
1980-1981 Yamaha XS850S Special
1982-1982 Kawasaki AR80
1982-1983 Yamaha YT175 Tri-Moto
1983-1988 Kawasaki ZN1300 Voyager
1987-2000 Yamaha XV535 Virago
1989-1997 Harley Davidson FLHTCU Electra Glide Ultra Classic
1990-1995 BMW R100GS Paris-Dakar
1991-1995 Kawasaki KAF300 Mule 500
1992-1992 Harley Davidson FXDC Super Glide Custom
1995-1996 Moto Guzzi 1100 Sport
1996-1996 Gas Gas Pampera 250
1984-1985 Yamaha XV1000 Virago
1986-1986 Harley Davidson FXRD Sport Glide Grand Touring
1990-1993 Harley Davidson FXRS-Conv Low Rider Sport Convertible
1992-1995 BMW R100R
1986-1993 Harley Davidson FXRS-SP Low Rider Sport
1992-1992 Harley Davidson FXDB-D Dyna Glide Daytona
1994-1995 Polaris SL 750
1994-1998 Harley Davidson FLHR Road King
1969-1974 BMW R60/5
1973-1976 BMW R75/6
1999-1999 Moto Guzzi V11 Bassa
1999-2000 Moto Guzzi V11 Quota
2000-2001 Polaris Pro 1200
2001-2001 Big Dog Vintage Sport
2001-2002 Big Dog Wolf
2003-2004 Gas Gas TXT 80 Rookie
1998-2006 Ski-Doo Mini Z
1999-2003 Indian Chief
2001-2003 Indian Spirit
2001-2004 Big Dog Boxer
2001-2004 Gas Gas TXT Pro 280
1999-1999 Harley Davidson FXR2
2001-2004 Big Dog Mastiff
2002-2003 Moto Guzzi California Stone Metal
2005-2013 Kawasaki KAF400 Mule 610 4×4
2006-2008 Beta Rev3 270
2006-2008 Moto Guzzi Griso 1100
2006-2009 Cobra ECX70
2007-2008 Cobra CX50-OI
2007-2009 Benelli Pepe 50 LX
2007-2009 Cobra ECX50
2007-2011 Cobra CX50-JR
1976-1981 Yamaha TT500
1977-1981 Yamaha XS400
1978-1981 Yamaha SR500
1978-1995 Suzuki DS80
1980-1983 Yamaha XT250
1980-1984 BMW R100CS
1981-1985 BMW R65LS
1981-1997 Yamaha XV750 Virago
1982-1983 Yamaha XS400 Maxim
1982-1994 Harley Davidson FXR Super Glide II
1983-1985 Harley Davidson FXSB Low Rider – Belt
1983-1991 BMW R100
2002-2005 Arctic Cat ZR 120
2002-2009 Yamaha XVS1100AT V Star 1100 Silverado
2004-2004 Big Dog Ridgeback
2005-2013 Kawasaki KAF400 Mule 600
2006-2006 Cobra P3
2007-2007 Cub Cadet 4×2 FIS / FIS SE
2007-2009 Benelli Pepe 50
2007-2009 Cobra CX65
2007-2011 Cobra CX50-SR
2008-2009 Moto Guzzi Norge 1200
2008-2009 Benelli Velvet 125
2009-2009 Cobra CX65 C.A.R.D.
2009-2011 Gas Gas TXT Pro 250
2009-2009 Benelli QuattroNove X off road
2009-2009 Benelli Velvet 150
2009-2009 Benelli Velvet 250
2010-2012 John Deere Gator TX 4×2 Turf
2009-2011 Kawasaki KAF620 Mule 4010 4×4
1985-1987 Harley Davidson FXRC Low Rider Chrome
1992-1994 BMW R80R
1993-1998 Harley Davidson FXDWG Dyna Wide Glide
1995-1995 Polaris SL 650 Std
1998-1999 Moto Guzzi V11 EV
2000-2000 Moto Guzzi V11 Jackal
2000-2001 Moto Guzzi V11 Sport
2001-2003 Gas Gas TXT 280
2001-2003 Indian Scout
2005-2006 Cobra CM50
2006-2006 Arctic Cat F120
2007-2008 Moto Guzzi Breva 1100
2009-2011 Kawasaki KAF620 Mule 4000
1973-1975 Harley Davidson X90
1973-1976 BMW R60/6
1975-1978 Harley Davidson FX Super Glide
1976-1981 Yamaha XT500
1976-1993 BMW R100RS
1978-1985 BMW R45
1980-1982 Yamaha XS400S Special
1980-1983 Yamaha XJ650 Maxim
1980-1985 Yamaha YT125 Tri-Moto
1981-1983 Yamaha XJ750R Seca
1982-1982 Yamaha XJ1100 Maxim
1983-1983 Harley Davidson FXDG Disc Glide
1983-1992 Harley Davidson FXRT Sport Glide
1987-1995 BMW R100GS
1990-1998 Harley Davidson FLSTF Fat Boy
1994-1995 Polaris SL 650
1995-1996 Moto Guzzi 1100 California I
1999-2009 Yamaha XVS1100 V Star 1100 Custom
2001-2001 Moto Guzzi California Jackel
2003-2004 Big Dog Chopper
2007-2008 Arctic Cat AC 120 Sno Pro
2008-2009 Benelli QuattroNove X
2008-2011 Gas Gas TXT Boy 50
2009-2009 Benelli Caffe Nero 250
1976-1980 BMW R100S
1976-1980 BMW R60/7
1977-1981 Yamaha XS650
1978-1979 Yamaha XS750S
1979-1981 Yamaha XS1100S Special
1980-1981 Yamaha XS850
1980-1983 Harley Davidson FLT Tour Glide
1980-1986 BMW R80G/S
1981-1982 Yamaha XV920R Seca
1981-1983 Yamaha XJ650L Turbo Seca
1982-1987 BMW R80RT
1984-1987 Yamaha XV700 Virago
1988-1998 Harley Davidson FLSTC Heritage Softail Classic
1995-1995 Moto Guzzi 1100 Sport I
1999-1999 Harley Davidson FXR3
2001-2001 Arctic Cat Z 120 Sno Pro
2001-2001 Moto Guzzi V11 Sport Rosso Mandello
2001-2002 Big Dog Pro Sport
2001-2004 Big Dog Bulldog
2001-2004 Big Dog Pitbull
2002-2005 Gas Gas Pampera 280
2003-2003 Gas Gas TX50 Boy
2003-2004 Big Dog Chopper DT
2003-2005 Gas Gas Wild HP 240
2004-2005 Moto Guzzi California Stone Touring
2007-2007 Cub Cadet Big Country 4×2
2010-2012 John Deere Gator TE 4×2 Electric
2010-2013 John Deere Gator CX 4×2
1979-1981 Harley Davidson FLHC Electra Glide Classic
1980-1980 Kawasaki KZ1300B
1980-1981 Suzuki TS250
1980-1982 Yamaha SR250
1980-1982 Yamaha TT250
1982-1982 Yamaha XJ650R Seca
1982-1983 Yamaha XJ750 Maxim
1984-1985 Harley Davidson FLHX Electra Glide Special
1987-1994 Harley Davidson FXLR Low Rider Custom
1991-1991 Harley Davidson FXDB-S Dyna Glide Sturgis
1991-1991 Kawasaki KAF540 Mule 2030
1994-1998 Harley Davidson FXDS-Conv Dyna Convertible
1995-1995 Polaris SLT 750
1995-1997 Harley Davidson FXSTSB Bad Boy
1997-1997 Polaris SL 700 Deluxe
1997-2004 Kawasaki KAF300 Mule 550
2001-2001 Moto Guzzi California Special
2001-2003 Big Dog Husky
2002-2005 Moto Guzzi California EV
2009-2011 Kawasaki KAF620 Mule 4010 Trans 4×4
1973-1974 Yamaha TX750
1975-1985 Harley Davidson FLH Electra Glide
1976-1978 BMW R100/7
1977-1979 Yamaha XS750
1978-1981 Yamaha XS1100
1979-1979 Yamaha XS650-2 Special II
1980-1981 Yamaha XS850L Mid-Special
1980-1993 Harley Davidson FLHS Electra Glide Sport
1981-1981 Yamaha SR250T
1983-1984 Yamaha XV500 Virago
1985-1986 Yamaha TY350
1985-1987 BMW R80
1989-1989 Honda TRX250R
1995-1996 Moto Guzzi 1100 California
1997-1997 Gas Gas Pampera 370
2000-2001 Arctic Cat Z 120
2000-2001 Kawasaki KAF300 Mule 520
2000-2009 Yamaha XVS1100A V Star 1100 Classic
2003-2005 Gas Gas Pampera 125
2005-2006 Cobra KING
2006-2006 Gas Gas MC Boy 50
2008-2010 Moto Guzzi California Vintage
2010-2013 Kawasaki KAF400 Mule 610 4×4 XC
2009-2011 Gas Gas TXT Cadet 80
The advanced E3 DiamondFire design increases combustion pressure and increases power in the engine.
Product Descripton:
Spark Plug
Diamond Fire
14 mm Thread
0.750 in Reach
Gasket Seat
Resistor
Sold Individually
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