REPLACEMNT -for Toyota 2000-2004 Avalon 3.0L, 2002-2006 Camry 3.0L, 2004-2006 Camry 3.3L, 2001-2003 Highlander 3.0L, 2004-2008 Highlander 3.3L, 2001-2003 Sienna 3.0L, 2004-2006 Sienna 3.3L, 2004-2008 Solara 3.3L for Lexus 1999-2003 ES300 3.0L, 2004-2006 ES330 3.3L, 1999-2003 RX300 3.0L, 2004-2006 RX330 3.3L FITMENT APPLICATIONS -E507c, 5c1193, E789, 52-1597, 88921393, UF-267, UF267, 90080-19016, 90919-02234, E507c, Ic337 COIL FUCTION - The low-voltage electricity of the power supply is changed into high voltage electricity, which becomes high voltage electric spark through the spark plug and ignites the combustible gas mixture Note - The ignition coil packs can be easily located inside the engine bay usually plugged above the engine once the engine cover is removed. In order not to cause trouble, please compare the product picture with the original parts before placing the order SUGGESTION - It's suggested that ignition coil and spark plug be replaced in a sychronized manner to lower the likelihood of common ignition system dysfunctions such as failure to start,engine vibration, misfiring, inadequate power ,spark plug fouling and poor fuel economy