🟢LONG HISTORY - In 1961, Zhuzhou torch spark plug. Co.,ltd. was established at Lukou, Zhuzhou, CHINA. In 1993，TORCH was listed as Shenzhen stock exchange. In 2003，TORCH has become china’s largest spark plug production and R&D base. Subsequently, TORCH bought the full set of equipment and technical patent from DELPHI U.S.A. Spark plug factory, ride into the forefront of the world! 🟢SPECIFICATIONS - Thread diameter: 14mm/Thread length:19mm/Hex size:16mm. Please check for correct specifications and measurements for your application!!! 🟢COMPATIBILITY - TORCH Iridium spark plugs K7RTAI Replace for NGK IZFR6H11 ZFR6FIX-11 Spark Plug, for BOSCH FR7KPP332 Spark Plug, for CHAMPION 9812 RC8WMPB4 Spark Plug, for DENSO IK20TT Spark Plug, OEM. 🟢Compatible Vehicles:Fit for BMW 550i /650i 2006-2010,750Li/750i 2006-2008,X5 4.8i 2007-2008,X5 4.8is 2004-2006,X5 xDrive48i 2009-2010 🟢APPLICATIONS - Spark plugs are an important part of the ignition system of gasoline or gas engines, and are widely used in many fields such as automobiles, motorcycles, aircraft, garden tools, yachts and industrial engines. specifically designed to increase power, reduce fuel consumption and improve hydrocarbon emissions.