NGK BKR6EIX Iridium IX Spark Plug

NGK is a globally recognized leader in the automotive ignition category, specifically renowned for its high-performance spark plugs. The product shown, the BKR6EIX (6418), is part of the Iridium IX series, which is designed for enthusiasts looking for improved throttle response and superior anti-fouling properties. Founded in Nagoya, Japan, the brand has built a reputation over decades for Japanese engineering precision and reliability.

While NGK Spark Plug Co., Ltd. operates manufacturing facilities across the globe—including the United States, Brazil, and Thailand—the high-end Iridium series is most frequently produced in Japan to ensure strict quality standards. The brand underwent a corporate name change in 2023 to Niterra Co., Ltd. to reflect its expanding business portfolio beyond internal combustion engines, although it continues to use the NGK brand name for its automotive ignition products globally.