Premium Iridium Spark Plugs for Japanese Engines

Ultra-fine iridium tip ensures superior ignition efficiency and long-lasting performance. Precision-engineered electrode design reduces voltage requirements for smoother starts.

High-quality nickel-plated shell resists corrosion and extends plug life. Laser-welded construction guarantees durability under extreme engine conditions.

Perfect fit for Japanese car models requiring 4937472 or 4955850 plugs. Optimizes fuel combustion for better mileage and reduced emissions.

Exclusive wholesale pricing for bulk orders. Globally sourced components meet strict OEM standards. Ships worldwide with reliable logistics support.

Ideal for automotive workshops, fleet maintenance, and performance tuning. Trusted by professional mechanics for consistent engine performance.