NGK 3997 Spark Plug - High-Performance Copper Core for Reliable Ignition

Ensure peak engine performance with NGK's trusted 3997 spark plug, engineered for reliable ignition in powersports vehicles. This high-quality spark plug combines advanced materials with precision engineering to deliver consistent combustion efficiency and extended service life.

Key Features

• Copper Core Construction: Enhances thermal conductivity for faster heat dissipation, preventing overheating and prolonging plug life
• Iridium Electrode: Provides superior ignition efficiency and longer service intervals compared to standard platinum tips
• Thread Size: 14mm x 1.25 (Compatible with most 4-stroke engines for easy installation)
• Reach: 28.6mm (Designed for optimal electrode-to-cylinder gap in performance applications)

Why Choose This Product

Upgrade your engine's ignition system with NGK's 3997 spark plug, known for its exceptional durability and consistent performance. The combination of copper core and iridium electrode delivers enhanced fuel efficiency, smoother engine operation, and reduced emissions. This reliable spark plug is ideal for riders seeking maximum power output without compromising on longevity or maintenance intervals.