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E3 Spark Plugs Diamond Fire Spark Plug 14 mm Thread 0.750" Reach Gasket Seat - Resistor

E3PE3.31
Spark Plug, Diamond Fire, 14 mm Thread, 0.750 in Reach, Gasket Seat, Resistor, Each
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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:

  • 1969-1969 Yamaha SS338
  • 1972-1972 Yamaha AT2
  • 1972-1974 Polaris Colt 295
  • 1972-1975 Suzuki TS400
  • 1973-1974 Yamaha SC500
  • 1973-1974 Yamaha TX650
  • 1973-1975 Arctic Cat El Tigre 440
  • 1960-1969 BMW R50/2
  • 1960-1969 BMW R60/2
  • 1966-1966 Honda CB450
  • 1969-1974 Honda CL450K Scrambler
  • 1971-1971 Yamaha SS433
  • 1968-1973 Honda CL350 Scrambler
  • 1970-1970 Yamaha DT1C
  • 1970-1970 Yamaha DT1C-MX
  • 1972-2012 Husqvarna WR250
  • 1973-1973 Yamaha CT3
  • 1973-1973 Yamaha DT3
  • 1973-1977 Suzuki GT250
  • 1974-1975 Suzuki TM100
  • 1974-1976 Honda CB360
  • 1975-1975 Yamaha MX400
  • 1975-1979 Scorpion Whip 440PR
  • 1975-1991 Suzuki RM125
  • 1976-1976 Kawasaki KZ900 LTD
  • 1976-1977 Honda CJ360
  • 1976-1978 Scorpion Range Whip 400PR
  • 1977-1977 Can-Am 175 MX-3
  • 1977-1979 Suzuki TS250
  • 1977-1983 Yamaha IT250
  • 1977-2002 Arctic Cat Z 440
  • 1978-1980 Suzuki GS1000E
  • 1978-1980 Yamaha ET340
  • 1978-1981 Suzuki TS125
  • 1978-1985 Suzuki RM80
  • 1979-1979 Suzuki GS425L
  • 1979-1979 Suzuki GS750L
  • 1979-1981 Kawasaki Drifter 440
  • 1979-1981 Ski-Doo Blizzard 5500
  • 1979-1984 John Deere Sportfire
  • 1980-1981 Suzuki PE400
  • 1980-1981 Yamaha YZ465
  • 1980-1982 Moto-Ski Mirage I
  • 1981-1981 Arctic Cat Jag 4000
  • 1981-1983 Kawasaki KZ1100A
  • 1981-1983 Ski-Doo Blizzard 5500 MX
  • 1981-1988 Husqvarna XC250
  • 1982-1982 Kawasaki AR50
  • 1982-1982 Ski-Doo Blizzard 9500
  • 1982-1982 Suzuki GS550M
  • 1982-1983 Kawasaki KZ1000R Lawson Replica
  • 1982-1983 Kawasaki KZ1100D Spectre
  • 1982-1983 Ski-Doo Nordik
  • 1982-1983 Suzuki GS1100G
  • 1983-1983 Kawasaki KZ750F LTD Shaft
  • 1983-1986 Husqvarna CR500
  • 1984-1988 Ski-Doo Safari 377
  • 1984-1988 Yamaha ET340 Enticer 340
  • 1985-1985 Yamaha PZ480E Phazer E
  • 1985-1986 Yamaha YTZ250 Tri-Z
  • 1986-1987 Ski-Doo Skandic 377R
  • 1986-1988 Husqvarna AE430
  • 1972-1972 Yamaha XS2
  • 1973-1973 Honda CB350G Super Sport
  • 1973-1975 John Deere JDX8
  • 1973-1975 Yamaha SR643
  • 1974-1974 Sno-Jet Astro SS 440
  • 1974-2014 Yamaha YZ250
  • 1975-1976 Sno-Jet SST F/A 340
  • 1975-1976 Triumph Trident 750 T160V
  • 1975-1977 Honda MR175
  • 1976-1976 Yamaha YZ175
  • 1976-1978 John Deere Cyclone 340
  • 1976-1978 Yamaha EX340
  • 1976-1979 Yamaha IT400
  • 1976-1981 Yamaha EX440
  • 1976-1983 Yamaha YZ80
  • 1977-1977 Arctic Cat Z 250
  • 1977-1977 Kawasaki Astro 340
  • 1977-1978 Arctic Cat Pantera 5000 F/C
  • 1977-1979 Kawasaki KE250
  • 1977-1981 Yamaha SRX440
  • 1977-1983 Kawasaki KZ1000A/J
  • 1978-1979 Suzuki PE175
  • 1978-1980 Kawasaki KZ1000D Z1R
  • 1979-1979 Scorpion Sting 400
  • 1979-1981 Arctic Cat El Tigre 6000 L/C
  • 1980-1980 Can-Am 125 MX-6
  • 1980-1980 Kawasaki Drifter 340F/A
  • 1980-1981 Arctic Cat Pantera ES (Electric Start)
  • 1980-1981 Ski-Doo Blizzard 9500 Plus
  • 1980-1981 Suzuki GS1000GL
  • 1980-1983 Yamaha SR540
  • 1980-1985 Honda CR80R
  • 1981-1981 Arctic Cat Panther West
  • 1981-1983 Suzuki GS450TX
  • 1982-1984 Kawasaki KLT250
  • 1982-1984 Yamaha ET340T Enticer 340T
  • 1983-1983 Kawasaki KZ750K LTD Belt
  • 1983-1983 Suzuki GS1100GL
  • 1983-1984 John Deere Sprintfire
  • 1983-1984 Kawasaki ZX1100 GPZ
  • 1984-1984 Ski-Doo SS25
  • 1973-1976 Sno-Jet SST 440
  • 1974-1974 Yamaha DT360
  • 1974-1975 Moto-Ski Chimo 440
  • 1974-1975 Scorpion Super Stinger 400
  • 1974-1975 Yamaha GPX338
  • 1975-1975 Scorpion Whip 400PR
  • 1975-1976 Husqvarna CR360
  • 1975-1976 Yamaha XS650
  • 1976-1976 Rupp Magnum 440
  • 1976-1976 Yamaha GP300
  • 1976-1977 Husqvarna Automatic 360
  • 1976-1977 Suzuki RM370
  • 1976-1979 Scorpion Whip 440PS
  • 1976-1984 John Deere Liquifire 440
  • 1977-1977 Scorpion Range Whip Sting 440PR
  • 1977-1977 Yamaha DT100
  • 1977-1978 Arctic Cat Pantera 5000 F/A
  • 1977-1978 Suzuki GS400X
  • 1977-1979 Suzuki GS550
  • 1977-1980 Husqvarna CR390
  • 1978-1982 John Deere Spitfire 340
  • 1978-1982 Kawasaki Intruder 440
  • 1978-2005 Kawasaki KZ1000C/P Police
  • 1978-2007 Honda CR250R
  • 1979-1979 Scorpion Whip 440 TK
  • 1979-1979 Scorpion Whip 440 TKX
  • 1979-1981 Moto-Ski Super Sonic
  • 1979-1981 Yamaha ET300
  • 1979-1991 Kawasaki KX80
  • 1979-2007 Honda CR125R
  • 1980-1981 Ski-Doo Blizzard 7500 Plus
  • 1980-1981 Suzuki GS450S
  • 1981-1983 Yamaha EC340
  • 1981-1984 Honda FL250 Odyssey
  • 1982-1984 John Deere Snowfire
  • 1982-1985 Suzuki GS450GA
  • 1982-2001 Kawasaki KE100
  • 1983-1983 Kawasaki KZ1100L LTD Shaft
  • 1983-1983 Ski-Doo Skandic 277
  • 1983-1984 Honda CR60R
  • 1983-1984 Yamaha ET300 Enticer 300
  • 1983-2003 Kawasaki KX60
  • 1984-1984 Husqvarna AE500
  • 1984-1984 KTM 420 MXC
  • 1984-1985 Kawasaki ZN1100B LTD
  • 1984-1988 Yamaha EC340 Excel III
  • 1988-1992 Arctic Cat Cheetah Touring
  • 1989-1990 Ski-Doo Formula Plus LT
  • 1989-1991 Arctic Cat El Tigre EXT Mountain Cat
  • 1989-1998 Suzuki RMX250
  • 1991-1991 Husqvarna WXE 260
  • 1991-1993 Arctic Cat Lynx Deluxe
  • 1992-1993 Arctic Cat EXT 550
  • 1992-1993 Arctic Cat Jag AFS LT 1 Speed
  • 1992-1993 Polaris SL 650
  • 1992-1995 Kawasaki JS750 750SX
  • 1992-1997 Arctic Cat Jag Deluxe
  • 1992-1997 Husqvarna WXC 250
  • 1993-1993 Arctic Cat EXT 580 Z
  • 1993-1994 Arctic Cat Wildcat Mountain Cat EFI
  • 1993-1995 Ski-Doo Formula MX Z
  • 1994-1994 Kawasaki JH750 XiR
  • 1994-1995 Polaris 300 2x4
  • 1994-1996 Yamaha VX600DX VMAX 600 DX
  • 1994-1997 Polaris Big Boss 400L 6x6
  • 1994-2007 Polaris Super Sport
  • 1995-1995 Yamaha VX800ST VMAX-4 ST
  • 1995-1996 Arctic Cat Wildcat Touring
  • 1995-1997 Polaris Wide Trak GT
  • 1995-1998 Arctic Cat Bearcat 440
  • 1995-1999 Polaris Trail
  • 1995-2000 Arctic Cat Bearcat 340
  • 1995-2000 Ski-Doo Formula S
  • 1995-2000 Ski-Doo Touring E
  • 1995-2000 TM MX80
  • 1995-2001 Arctic Cat ZRT 800
  • 1996-1996 Yamaha VX600ST VMAX 600 Mountain Max
  • 1996-1996 Yamaha VX800ST VMAX-4 Mountain Max
  • 1996-1997 Polaris SLT 700
  • 1996-1997 Polaris Ultra SP
  • 1996-1997 Polaris Xpress 400L
  • 1996-1998 Ski-Doo MX Z 583
  • 1996-1998 Yamaha VT480TR Venture TR
  • 1984-1985 Kawasaki ZN700A LTD
  • 1984-1985 Kawasaki ZX750E Turbo
  • 1985-1987 Polaris 600
  • 1985-1991 Polaris 400
  • 1985-1992 Suzuki LT250R QuadRacer
  • 1987-1987 Polaris Sprint
  • 1987-1987 Ski-Doo Tundra LTS
  • 1987-1989 Yamaha PZ480E Phazer Deluxe
  • 1987-1990 Yamaha EX570 Exciter
  • 1988-1990 Yamaha DT50
  • 1988-1991 Ski-Doo Nordik 60
  • 1989-1989 Ski-Doo Safari Escapade
  • 1989-1990 Yamaha ET400TR Enticer LTR
  • 1989-1995 Ski-Doo Formula Mach 1
  • 1989-1998 Arctic Cat Cougar Mountain Cat
  • 1990-1990 Arctic Cat El Tigre EXT Special
  • 1990-1991 Arctic Cat Panther Mountain Cat
  • 1990-1992 KTM 300 TXC
  • 1990-1996 Arctic Cat Wildcat Mountain Cat
  • 1991-1992 Arctic Cat EXT Special
  • 1991-1992 Arctic Cat Wildcat EFI Mountain Cat
  • 1991-1993 Arctic Cat Wildcat
  • 1991-1993 ATK 406 MX
  • 1991-1993 Ski-Doo Formula Plus XTC
  • 1991-1993 Yamaha EX570 Exciter II
  • 1991-1993 Yamaha EX570E Exciter II LE
  • 1991-1996 Arctic Cat Panther Deluxe
  • 1992-1992 Yamaha WR200
  • 1992-1993 Yamaha WR500
  • 1992-1999 Polaris XLT SP
  • 1993-1996 Polaris Storm SKS
  • 1993-2002 Arctic Cat Thundercat
  • 1994-1994 Ski-Doo Tundra II
  • 1994-2001 Yamaha VX500 VMAX 500
  • 1995-1995 Ski-Doo Formula STX LT
  • 1995-1996 Arctic Cat Bearcat 550
  • 1995-1997 Sea-Doo HX
  • 1987-1987 Ski-Doo Escapade
  • 1987-1988 Husqvarna XC430
  • 1987-1988 Kawasaki KXF250 Tecate 4
  • 1987-1990 Ski-Doo Formula MX LT
  • 1987-1990 Suzuki LT500R QuadRacer
  • 1987-2006 Yamaha YFZ350 Banshee
  • 1988-1989 Yamaha EX570E Exciter Deluxe
  • 1988-1990 ATK 250
  • 1988-1991 Ski-Doo Nordik 50
  • 1988-1995 Ski-Doo Alpine II
  • 1988-1999 Arctic Cat Jag 340 Deluxe
  • 1988-2006 Yamaha YFS200 Blaster
  • 1990-1990 Honda NS50F
  • 1990-1990 Kawasaki KD80
  • 1990-1991 Arctic Cat Jag AFS Long Track
  • 1990-1991 KTM 300 MX
  • 1990-1991 Ski-Doo Formula Mach 1 XTC
  • 1990-1992 KTM 300 DXC
  • 1991-1991 Ski-Doo Cheyenne
  • 1991-1991 Ski-Doo Formula Plus MX
  • 1991-1996 ATK 406 CC
  • 1991-1998 Polaris Lite
  • 1992-1992 KTM 300 SX
  • 1992-1992 Ski-Doo Formula XTC E
  • 1992-1992 Ski-Doo Formula XTC II
  • 1992-1997 Husqvarna WXC 360
  • 1993-1993 Polaris SL 750
  • 1993-1993 Ski-Doo Safari Rally
  • 1993-1993 Yamaha EX570ST Exciter II ST
  • 1993-1993 Yamaha EX570SX Exciter II SX
  • 1993-1996 KTM 550 MXC
  • 1993-1997 Kawasaki JH750 Super Sport XI
  • 1993-1997 Polaris XLT SKS
  • 1993-1998 Arctic Cat ZR 440
  • 1994-1994 Ski-Doo Formula MX ZX
  • 1994-1995 Polaris 650 RXL Touring
  • 1994-1996 Arctic Cat EXT EFI
  • 1994-1996 Yamaha VX600E VMAX 600 LE
  • 1994-1998 Ski-Doo Summit 583
  • 1994-1999 Arctic Cat ZR 700
  • 1994-1999 Polaris 440 XCR SP
  • 1995-1995 Ski-Doo Skandic Ski Hill Special
  • PROP 65

    This product can expose you to chemicals including Chromium, which is/are known to the State of California to cause cancer and birth defects or other reproductive harm

    Details

    • E3PE3.31
    • E3PE3.31
    • 894489000718
    • E3 Spark Plugs
    • Available
    • Same Day Shipping!
    • New

    Shipping Information

    • Item Requires Shipping
    • 0.2 lbs.
    • W6.4500” x H1.0500” x L4.5000”
    • Orders over $149 ship free. Oversize items are excluded.

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