NGK SPARK PLUGS 2103-0046 3901 Spark Plug CPR7EA-9 10 pack

OVERVIEW

This engine ignition component delivers precise spark timing and consistent power delivery for demanding utility and street machines. Manufactured by NGK around a rugged CPR7EA‑9 platform, it combines high-grade alumina ceramics, a deep-seated copper base conductor, and a reinforced nickel alloy firing tip. It functions as a direct factory replacement engineered to keep Japanese four-wheelers and scooters running reliably under varied load and temperature conditions.

ENGINEERING & PERFORMANCE

The plug maintains steady ignition throughput across a broad operating heat range, actively preventing carbon accumulation during low-speed cruising while blocking premature combustion spikes during heavy throttle input. An internal copper core rapidly channels excess thermal energy away from the gap area, and the dense ceramic insulator provides rigid voltage containment to eliminate weak-firing faults. The hardened nickel alloy center terminal resists rapid wear, stretching maintenance intervals without sacrificing output. Designed as a drop-in OEM equivalent, it mounts directly to the cylinder head without requiring custom adapters or altered wiring harnesses.

KEY FEATURES

• High-performance alumina ceramic insulator for maximum electrical isolation
• Deep-seated copper core engineered for expanded thermal management
• Nickel alloy center electrode built to resist thermal erosion and arcing
• Wide operating heat range that prevents both cool-running fouling and hot-running preignition
• Optimized internal geometry for faster heat dissipation
• Consistent high-voltage discharge across fluctuating RPM and load cycles
• Direct cross-compatible replacement for OEM part number 3901 series
• Broad multi-brand compatibility spanning Yamaha, Honda, and Kawasaki chassis
• Convenient 10-piece bulk packaging for workshop inventory and fleet upkeep

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: Spark Plug CPR7EA-9
• Component Type: Spark Plug
• Material: High alumina ceramic, copper base core, nickel alloy terminal
• Supported Years: 2004–2020
• Compatible Trims: Yamaha Kodiak, Grizzly, Rhino, Morphous, Maxam, Majesty; Honda CBF125, PCX125, SH125i; Kawasaki Brute Force, Vulcan 800/900

FITMENT

• Yamaha Kodiak 700 EPS 4x4 (2016–2020)
• Yamaha Kodiak 700 4x4 (2016–2020)
• Yamaha Kodiak 700 SE EPS 4x4 (2016–2020)
• Yamaha Grizzly 700 EPS LE 4x4 (2016–2017)
• Yamaha Grizzly 700 EPS 4x4 (2016–2017)
• Yamaha Grizzly 700 EPS SE 4x4 (2016–2017)
• Honda CBF125 (2015)
• Kawasaki Brute Force 750 EPS 4x4i (2015)
• Kawasaki Vulcan 900 Classic LT (2011–2020)
• Kawasaki Vulcan 900 Custom Special Edition (2011–2017)
• Honda PCX125 (2010–2011)
• Yamaha Rhino 700FI 4x4 (2008–2016)
• Kawasaki Vulcan 900 Custom (2007–2020)
• Yamaha Grizzly 700 AT FI 4x4 (2007–2015)
• Yamaha CP 250 Morphous (2007–2008)
• Yamaha Grizzly 700 AT FI Outdoorsman Ed 4x4 (2007)
• Yamaha Grizzly 700 AT FI Ducks Unltd Ed. 4x4 (2007)
• Yamaha Grizzly 700 AT FI Exploring Ed 4x4 (2007)
• Yamaha Grizzly 700 AT FI SE 4x4 (2007)
• Yamaha CP 250 Maxam (2007)
• Yamaha Grizzly 700 FGP AT FI EPS 4x4 (2007)
• Kawasaki Vulcan 900 Classic (2006–2020)
• Kawasaki Vulcan 800A (2006–2012)
• Yamaha Majesty 250 (2004–2006)

WHY RIDERS CHOOSE THIS

Riders install this NGK CPR7EA-9 plug when maintaining high-strung engines that require unbroken spark continuity under mud, dust, or steep terrain loads. The bonded copper conductor and dense ceramic shell work in tandem to pull waste heat out of the combustion chamber quickly, holding the firing tip in its optimal thermal sweet spot while stopping the cycle-repeat fouling that stalls cheaper alternatives. Coupled with the welded nickel alloy electrode, the design keeps acceleration sharp and idle steady across the entire production run of these specific Japanese models. Because it mirrors the exact reach, thread pitch, and thermal curve of the original equipment, it restores factory ignition characteristics without modification or tuning guesswork.