MASUMA S101I Japanese Champion Gas Engine Spark Plug MR984646 MN163807

Premium Iridium Core
– High-performance iridium tip ensures precise ignition, reducing voltage demands for longer lifespan and fuel efficiency.
Precision Laser Welding
– Advanced laser-welded center electrode prevents corrosion and maintains stable spark even under extreme engine stress.
Copper Inner Gasket
– Reinforced copper core enhances heat dissipation, preventing pre-ignition in high-temperature conditions.
Multi-Ground Electrode Design
– Quadruple ground electrodes deliver consistent sparks, optimizing combustion for smoother acceleration.
Direct OEM Replacement
– Exact fit for Kia, Volkswagen, Nissan models (compatible with part numbers MR984646, MN163807).
Racing-Grade Durability
– Forged nickel alloy shell resists cracking under rapid thermal cycling, ideal for turbocharged or high-compression engines.
Global Compliance
– Meets JIS/ISO standards, suitable for daily commuters, off-road vehicles, and performance tuning.
Bulk Order Advantage
– Factory-direct pricing with no minimum quantity, backed by 12-month warranty.