This is a Fuel Injector Seal/O-ring and Filter service kit for most Subaru WRX 2002+ and STI 2007+. It will service 4 (four) Subaru top feed fuel injectors which can be found on Subaru WRX 2002-2014, Subaru STI 2007-2015 as well as other Subaru models such as Forester, Impreza and Outback with 2.5L engine equipped with top feed fuel injectors.
