NGK Iridium Spark Plug - DPR7EIX-9

The NGK Iridium IX DPR7EIX-9 (7803) is a high-performance spark plug designed for enthusiasts who want to improve engine efficiency and throttle response. Featuring a 0.6mm fine-wire iridium center electrode, it requires less voltage to generate a spark, which leads to faster cold starts, a more stable idle, and more efficient combustion.

Key Performance Benefits

• Superior Ignitability: The ultra-fine iridium tip focuses electrical energy, allowing for a stronger and more consistent spark even in high-compression or high-tech engines.

• Enhanced Throttle Response: The tapered-cut ground electrode minimizes the "quenching" effect, enabling the flame to spread more rapidly for a crisper acceleration feel.

• Long-Term Durability: Iridium has an extremely high melting point, making it roughly six times harder than platinum. This ensures the plug maintains a precise spark gap for up to 50,000 miles.

• Anti-Fouling Design: A specialized thermo-edge design and corrugated ribs prevent carbon buildup and electrical flashover, which is critical for maintaining performance in stop-and-go city traffic.

Technical Specifications

Popular Fitment & Compatibility

The NGK DPR7EIX-9 is widely used as a performance upgrade across several motorcycle and powersports platforms:

• Honda: Gold Wing (GL1500), Shadow (VT1100/VT750), and Valkyrie models.

• Yamaha: Drag Star (XVS 650), MT-01, and several FZ-series models (FZ-16, FZ-S).

• Suzuki: Boulevard (C50/C90/M50) and Intruder (VL1500/VL800).

• Kawasaki: Vulcan 1500 and VN 750 models.