NGK SPARK PLUGS DPR6EA-9 5531 Spark Plug 10 PACK

OVERVIEW

The NGK DPR6EA-9 spark plug delivers consistent ignition timing and reliable engine starts for cruiser and scooter platforms. Built around a high‑alumina ceramic insulator and reinforced internal architecture, this replacement ensures stable electrical discharge under demanding cycling conditions. Engineered specifically for motorcycle applications, the unit restores factory-grade combustion efficiency without requiring system modifications or tuning adjustments.

ENGINEERING & PERFORMANCE

A wide operating heat range allows the plug to self-clean at moderate RPMs while rejecting preignition during sustained heavy loads. Premium alumina ceramics regulate thermal output effectively, maintaining tight electrical insulation that preserves voltage stability across the entire ignition cycle. A deep-seated copper core channels heat rapidly toward the cylinder head, extending the functional temperature window beyond conventional designs. The nickel alloy terminal and electrode assembly resists structural degradation, supporting longer service intervals between scheduled maintenance.

KEY FEATURES

• 10-pack configuration supports full-engine maintenance cycles
• DPR6EA-9 designation aligns directly with OEM specifications
• Extended heat range accommodates varied throttle and speed demands
• High alumina ceramic insulator maximizes thermal management
• Deep-seated copper core increases conductive heat transfer
• Nickel alloy tip and terminal construction extends electrode lifespan
• Bolt-on installation procedure eliminates wiring or calibration steps
• Sealed gasket design guards against oil contamination and moisture

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: DPR6EA-9 Spark Plug
• Component Type: Spark Plug
• Material Composition: Alumina ceramic insulator, copper thermal core, nickel alloy electrode and terminal
• Supported Years: 1984–2010
• Compatible Trims: Honda Elite, Helix, PC Pacific Coast, VT Shadow, NSS Reflex; Kawasaki VN Vulcan Classic, Drifter, Mean Streak, Nomad; Kymco Yager GT EFI

FITMENT

• 2009-2010 Kymco Yager 200 GT EFI
• 2008-2009 Honda VT750C Shadow Aero
• 2007-2009 Honda VT750C2 Shadow Spirit
• 2006 Kawasaki VN 1600 G Vulcan Nomad
• 2006 Kawasaki VN 1600 F Vulcan Mean Streak
• 2006 Kawasaki VN 1500 T Vulcan Classic Fi Anniversary
• 2006 Kawasaki VN 1600 E Vulcan Classic
• 2005-2008 Kawasaki VN 1600 D Vulcan Nomad
• 2005-2006 Honda PS250 Big Ruckus
• 2004-2008 Kawasaki VN 1600 B Vulcan Mean Streak
• 2004-2007 Honda NSS250S Reflex Sport
• 2004-2007 Honda NSS250AS Reflex Sport ABS
• 2003-2008 Kawasaki VN 1600 A Vulcan Classic
• 2002-2003 Kawasaki VN 1500 P Vulcan Mean Steak
• 2001-2007 Honda NSS250 Reflex
• 2001-2007 Honda NSS250A Reflex
• 2001-2005 Kawasaki VN 1500 R Vulcan Drifter
• 2000-2004 Kawasaki VN 1500 L Vulcan Nomad Fi
• 2000-2002, 2005-2008 Kawasaki VN 1500 N Vulcan Classic Fi
• 1999-2000 Kawasaki VN 1500 J Vulcan Drifter
• 1989-1990, 1994-1998 Honda PC800 Pacific Coast
• 1986-1987, 1992-2001, 2004-2007 Honda CN250 Helix
• 1985-1990 Honda CH250 Elite
• 1985-1986 Honda CH150D Elite Deluxe
• 1985-1986 Honda VT1100C Shadow
• 1985, 1987 Honda CH150 Elite
• 1984 Honda CH125 Elite
• 1984 Honda NH 125 Aero

WHY RIDERS CHOOSE THIS

Maintenance teams and independent operators trust this spark plug because the calibrated heat range actively suppresses carbon deposits before they trigger hesitation or rough idling. Rapid thermal conduction from the copper core combined with dense ceramic insulation keeps the firing zone clean during stop-and-go traffic while preventing hot-spot detonation on back-country runs. The nickel-plated mounting components guarantee steady spark transmission across thousands of ignition cycles. Straightforward dimensional matching lets riders swap units quickly, keeping aging V-twin and parallel-twin engines firing evenly through routine service schedules.