E3.38 is a 10mm, 0.750” reach spark plug with a gasket seat, engineered specifically for high-performance powersport engines. Commonly used in motorcycles and powersport machines from Honda, Kawasaki, Suzuki, Yamaha, Ducati, Aprilia, KTM, Triumph, BMW, and more, this plug is designed to handle extreme RPM ranges and demanding riding conditions.
The patented DiamondFIRE ground electrode features a dual-leg design that enhances heat transfer and withstands intense vibration. This advanced configuration improves combustion efficiency, resulting in increased horsepower, better throttle response, improved fuel economy, and reduced emissions.
With a full-size center electrode and optimized ground design, the E3.38 delivers consistent ignition performance and long service life in high-output engines.
Key Features
- DiamondFIRE electrode technology for improved combustion
- Increased horsepower and acceleration response
- Enhanced fuel efficiency and reduced emissions
- Designed for high-RPM and high-vibration environments
- Dual-leg ground electrode for durability and heat dissipation
- Long-lasting performance in demanding applications
Specifications
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Part Number: E3.38
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Resistor: Yes
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Hex Size: 5/8"
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Thread Diameter: 10mm
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Thread Reach: 0.750"
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Seat Type: Gasket
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Tip Configuration: DiamondFIRE Fixed Gap (Non-Adjustable)
Replaces
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Champion: G57C, G59C
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NGK: CR7E, CR8E, CR9E
Vehicle Fitment
Aprilia
- Caponord 1200 (2014)
- Caponord 1200 ABS Rally (2016)
- Caponord 1200 ABS Travel Pack (2016)
- Dorsoduro 1200 (2012)
- Dorsoduro 750 (2010–2012)
- Dorsoduro 750 ABS (2013–2016)
- MXV 450 (2009–2010)
- Mana 850 / GT ABS (2009–2014)
- Pegaso 650 series (2006–2007)
- RS4 125 (2016)
- RSV4 series (2010–2016)
- RXV / SXV 450 & 550 (2006–2012)
- Shiver 750 (2008–2016)
- Tuono V4 series (2013–2016)
BMW
Ducati
- 749 / 749R / 749S (2004–2005)
- 998 / 998R / 998S (2002–2004)
- 999 / 999R / 999S (2003–2005)
- ST3 / ST3S ABS (2004–2007)
Harley-Davidson
Honda
- CB, CBR, VFR, ST, CRF, XR, and additional models (1988–2021)
- Includes: CBR600RR, CBR1000RR, VFR800, ST1100, ST1300, CRF150R, CRF250X, XR250R and more
KTM
- SX-F, XC, XC-F, XC-W models (2006–2015)
- EXC / MXC / SX 400–520 series (2000–2002)
- 450 SX-F & Factory Editions
- 950 / 990 Adventure & Supermoto models
Kawasaki
- Ninja series including ZX-6R, ZX-10R, ZX-14R, H2, Ninja 250/300/650/1000
- Z series (Z650, Z800, Z900, Z1000)
- Versys, Vulcan, KLX, KX, Concours, W series
- Coverage from late 1980s through 2021
Suzuki
- GSX-R series (600 / 750 / 1000 / Hayabusa)
- SV650 / SV1000
- V-Strom 650 / 1000
- DR-Z, RMZ, Bandit, Katana, Boulevard
- Coverage from 1990s–2020
Triumph
- Daytona, Speed Triple, Street Triple, Sprint, Tiger, Trophy models (2000–2020)
Yamaha
- FZR600R (1989–1999)
- FZ1 / FZ6 series (2001–2014)
- FJR1300 (2003–2012)
- V-Max 1700 (2009–2014)
- WR, YZ, YZF off-road and motocross models (1998–2019)
- YZF-R1 (1998–2008), YZF600R (1995–2007), YZF-R3 (2021)
Note: This spark plug supports a wide range of powersport applications. Always confirm compatibility with your specific engine and OEM requirements prior to installation.
