NGK SPARK PLUGS DPR8EA-9 4929 10 pack

OVERVIEW

The NGK DP8EA-9 spark plug delivers precise ignition timing and consistent combustion across a broad spectrum of motorcycle engines. Crafted with high-alumina ceramic insulators and a deep-seated copper core this component resists thermal degradation while maintaining reliable voltage transfer under stress. Designed as a direct OEM replacement this 10-pack supports streamlined cylinder-head maintenance for Honda Yamaha Triumph Suzuki and Kawasaki two wheel platforms.

ENGINEERING & PERFORMANCE

Operational stability relies on a broad heat range design that effectively prevents cold-carbon fouling during slow rides while stopping pre-ignition when exhaust temperatures spike. The deep-seated copper core accelerates heat dissipation up the insulator shaft preserving optimal electrode temperature under heavy load or prolonged highway cruising. Reinforced threading and a hardened nickel alloy center pin withstand continuous vibration and corrosive exposure extending service intervals between standard maintenance cycles.

KEY FEATURES

• Component Type: Internal Combustion Engine Spark Plug
• Brand: NGK
• Model: DP8EA-9 / 4929
• Insulation: High-alumina ceramic for maximum dielectric strength
• Core Construction: Deep-seated copper core widens effective heat range
• Electrode Tip: Nickel alloy formulation for enhanced wear resistance
• Thermal Management: Broad operating range eliminates carbon buildup and detonation risks
• Mounting: Standard OEM thread pitch and reach for direct installation
• Packaging: Sold as a 10-pack suitable for multi-cylinder engine rebuilds

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: DP8EA-9 Spark Plugs
• Component Type: Spark Plug
• Material: High-alumina ceramic insulator copper core nickel alloy electrode
• Supported Years: 1982–2018
• Compatible Trims: Wide array of OEM configuration across Honda XP Shadow GS XR GoldWing V40/750 models Yamaha XV19 Strato YZ XVZ RoyalStar Grizzly Raptor VMX series Triumph Bonneville Speed Triples Daytones Tigers adventure touring series Suzuki Boulevard Intruder GS series Kawasaki Voyager KLR650 Prairie/KLF250 KTM Rally variants

FITMENT

• Honda CRF230M (2009)
• Honda CRF230L (2008–2009)
• Honda CRF230F (2003–2009)
• Honda CB750N Nighthawk (1991–2003)
• Honda CBR600F (1990)
• Honda GB500 (1989–1990)
• Honda VT750DC Shadow Spirit (2001–2007)
• Honda VT600CD Shadow VLX Deluxe (1999–2000 2006–2007)
• Honda VT600CD2 Shadow VLX (1988–2007)
• Honda CMX450C Rebel (1986–1987)
• Honda CM450EHondamatic (1983)**
• Honda GL650 Silver Wing Interstate (1983)
• Honda CX650 Custom (1983)
• Honda CX650T Turbo (1983)
• Honda GL650 Silver Wing (1983)
• Honda GL1100 Gold Wing (1982–1983)
• Honda GL1100A Gold Wing Aspicade (1982–1983)
• Honda GL1100I Gold Wing Interstate (1982–1983)
• Honda VF750C V45 Magna (1982–1983)
• Honda VF7005 V45 Sabre (1982–1983)
• Honda GL1200SEI Gold Wing Aspicade (1986)
• Honda XR600 R (1985–2000)
• Honda GL1200L Gold Wing Limited (1985)
• Honda GL1200A Gold Wing Aspencad (1984–1987)
• Honda GL1200I Gold Wing Interstate (1984–1987)
• Honda VF7000F Magna (1984–1987)
• Honda CB700SC Nighthawk S (1984–1986)
• Honda VF500C V30 Magna (1984–1985)
• Honda VF1100S V85 Sabre (1984–1985)
• Honda VF500F Interceptor (1984–1985)
• Honda VF700F Interceptor (1984–1985)
• Honda VF700S Sabre (1984–1985)
• Honda XL350R (1984–1985)
• Yamaha XC180Z Riva (1984)
• Honda GL1200 Gold Wing (1984)
• Honda VF1000F Interceptor (1984)
• Honda XL600R (1983–1987)
• Honda CB450SC Nighthawk (1983–1986)
• Honda VF1100C V65 Magna (1983–1986)
• Honda VT500C Shadow (1983–1986)
• Yamaha XC180 Riva 180 (1983–1985)
• Honda XR350R (1983–1985)
• Honda CB650SC Nighthawk (1983–1985)
• Yamaha XVZ1200D Venture Royale (1983–1985)
• Honda VT700C Shadow (1983–1984)
• Honda VF750F V45 Interceptor (1983–1984)
• Honda XR500R (1983–1984)
• Honda VT500FT Ascot (1983–1984)
• YamaXA IV1200 Venture (1983–0)
• Honda CM450A Hondamatic (1983)
• Honda GL650 Silver Wing (1983)
• Honda CB550SC Nighthawk (1983)
• Honda MB00E (1983)
• Honda CX650C Custom (1983)
• Honda CX650T Turbo (1983)
• Honda GL650I Silver Wing Interstate (1983)
• Yamaha XV19C Raider (2015–2017)
• Yamaha XV19CS Raider S (2015)
• Yamaha XV1900S Roadliner S (2012–2014)
• Yamaha XV19C Raider SCL (2012–2014)
• Yamaha XV19CTF Stratoliner Deluxe (2010–2012 2014)
• Yamaha XVZ1300TFS Royal Star Venture S (2009–2010)
• Yamaha XVZ1300TS Royal Star Tour Deluxe S (2008–2009)
• Yamaha XV19CTS Stratoliner S (2006–2010)
• Yamaha XV1900M Roadliner Midnight (2006–2009)
• Yamaha XV1900CTM Stratoliner Midnight (2006–2008)
• Yamaha XV1900CT Stratoliner (2000–2007 2009)
• Yamaha XV1900 Roadliner (2006–2007)
• Yamaha XVZ1300CT Royal Star Tour Deluxe (2005–2009)
• Yamaha XVZ1300TFM Royal Star Midnight Venture (2002–2007)
• Yamaha XVZ1300TF Royal Star Venture (2000–2009)
• Yamaha YXR66F Rhino 660 (2004–2007)
• Yamaha YFM660F Grizzle 4x4 (2002–2004)
• Yamaha YFM660R Raptor (2001–2005)
• Yamaha VM000 V-Max (1985–1986 1988–2007)
• Yamaha XVZD Venture Royale (1986–1994)
• Yamaha XVZ1300 Venture Royale (1986–1993)
• Triump Bonneville 865 (2012–2014)
• Triumph Thruxton 865 (2007–2016)
• Triumph Scrambler 865 (2000–2016)
• Triump Bonneville T100 (2006–2013 2015 2017–2018)
• Triumph 865 America (2009–2016)
• Triumph Bonneville SE (2009–2013)
• Triumph Speed Master 865 (2005–2016)
• Triumph Rocket Il (2005–2010)
• Triumph America 8000 (2002–2003)
• Triumph Bonnevile 800 (2001–2006)
• Triumph Sprint RS (1999–2001)
• Triumph Legend TT (1999–2001)
• Triumph Dawnay 955i (1999–2001)
• Triumph Sprint ST (1999–2001)
• Triumph Thunderbird Sport (1998–2004)
• Tripun Speed Triple 955 (1998–2001)
• Triumph Speed Triple TSOS (1997–2000)
• Triumph Daytona T595 (1997)
• Triump Adenturer (1996–2000 2002)
• Triumph Tiger 885 (1995–2006)
• Triumph Thunderbird 8850 (1995–2001)
• Triumph Sprint Executiv (1995–1998)
• Triumph Speed Triple 885 (1994–1998)
• Triumph Daytona 900 Super Ill (1994–1996)
• Triumph Dayona 900 (1994–1996)
• Triumph Daytona 1200 (1993–1997)
• Suzuki S40 Boulevard (2005–2009 2011–2015)
• Suzuki S83 Boulevard (2005–2008)
• Suzuki GS500F (2004–2009)
• Suzuki VZ800 Marauder (1997–2004)
• Suzuk Intruder 800 GL (2001–2002 2004)
• Suzuki Intruder 1400 GLF (1991–2004)
• Suzuki VS800GL Intruder (1992–2000 2003)
• Suzuki VX800 (1990–1993)
• Kawasaki KVF360 Prairie 4x4 (2003–2009)
• Kawasaki KSF250 Mojave (2000–2003)
• Kawasaki KLX650 (1993–1996)
• Kawasaki ZG1200 Voyager XII (1986–2000)
• Kawasaki KLP650 (1997–2018)
• KTM 660 Rally (2001–2002)

WHY RIDERS CHOOSE THIS

Riders choose the NGK DP8EA-9 spark plug because its wide operating heat range consistently eliminates cold-carbon fouling while preventing dangerous pre-ignition during aggressive throttle input or steep climbs. The deep seated copper core rapidly channels exhaust heat away from the firing end allowing the plug to self-clean naturally without relying on external cooling apparatus. Combined with a durable nickel alloy electrode this setup guarantees crisp ignition pulses steady idle characteristics and optimized fuel atomization regardless of altitude or seasonal temperature swings. Engineered to match original equipment thread geometry and gap tolerances these plugs slide directly into the cylinder heads without drilling or adapte hardware delivering immediate throttle responsiveness and dependable daily rideability.