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Osculati 47.558.51 – NGK IZFR6K-11 Iridium Marine Spark Plug
The NGK IZFR6K-11 (Osculati 47.558.51) is a premium-grade iridium spark plug specifically designed for advanced 4-stroke marine engines requiring long service life and maximum ignition precision. It features a fine-wire iridium center electrode and a 1.1 mm factory-set gap, providing excellent combustion performance under a wide range of operating conditions. The built-in resistor ensures compatibility with electronic ignition systems by suppressing electromagnetic interference.
Key Features:
- Fine iridium center electrode for superior durability and spark focus
- Wide 1.1 mm factory-set gap for strong ignition spark
- Resistor design minimizes EMI/RFI for electronics protection
- Projected insulator improves combustion and reduces fouling
- Ideal for fuel-injected and high-compression 4-stroke marine engines
Technical Specifications:
Attribute Value Model NGK IZFR6K-11 Osculati Code 47.558.51 Thread Diameter M14 × 1.25 mm Reach 19 mm Hex Size 16 mm Heat Range 6 Gap 1.1 mm Electrode Type Fine-wire iridium, projected tip Resistor Yes
Manufacturer Compatibility:
- Yamaha
- Mercury
- Mariner
- Suzuki
- Tohatsu
- Selva
- Honda
Cross Reference:
Brand Model NGK IZFR6K-11 Champion 3071
The NGK IZFR6K-11 is the ideal spark plug for marine enthusiasts and professionals demanding premium performance, extended durability, and reliable ignition in the toughest marine environments. Its iridium core delivers superior spark precision and efficiency, even at low idle or high RPMs.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -