NGK Spark Plug FR5EI (1313)

NGK FR5EI spark plugs deliver dependable ignition and consistent performance across a range of gasoline engines. Designed with a robust 14mm diameter and a heat range tuned for reliable firing, these plugs help reduce misfires, improve throttle response, and promote smoother idle. The FR5EI features NGK's durable center electrode, corrosion-resistant shell, and precise gap capability, ensuring long service life in everyday driving and light-tage conditions. Whether you're tuning a small quad, a compact car, or a friendly off-road machine, these plugs provide steady sparks and efficient combustion. Easy to install and designed for compatibility with standard ignition systems, FR5EI plugs support reliable starts and strong acceleration while maintaining efficient fuel use.