Spark Plug DENSO FK16HR-A8 (3484)

The high-tech DENSO Iridium Tough FK16HR-A8 spark plug (part number 3484) is engineered for modern gasoline engines requiring enhanced reliability and combustion efficiency. The product features an ultra-fine 0.4 mm iridium center electrode and a platinum-tipped ground electrode, which minimizes firing voltage and significantly extends service life up to 100,000 km. Technical specifications include a 12 mm thread diameter, 26.5 mm thread length, and a 14 mm hex size. Due to its Long Reach design, the plug ensures optimal heat dissipation and stable performance in direct-injection engines. The FK16HR-A8 model is the OEM choice for many Toyota and Lexus vehicles, contributing to improved acceleration and reduced exhaust emissions. Its high corrosion resistance and spark stability under extreme conditions make it an ideal solution for long-term use.