The DENSO Iridium Power spark plug, part code PK16PR-P11, is engineered for superior ignition performance. Its advanced iridium alloy tip provides exceptional durability and a high melting point, allowing for a smaller electrode gap and concentrated spark. This design promotes more efficient fuel combustion, leading to improved engine power, better fuel economy, and reduced emissions. The plug's construction is optimized to withstand extreme engine conditions, ensuring consistent performance over its lifespan. Ideal for a wide range of vehicles, the PK16PR-P11 offers a direct fit and reliable operation. Experience enhanced throttle response and a smoother running engine with this high-quality DENSO spark plug.