This oxygen sensor is designed to fit 2008-2014 Subaru Impreza 2.5L Turbo WRX STI models. It is a direct fit sensor with male connector type and blade & bullet terminal type. The wire harness is included for easy installation. The sensor is made of metal and is designed to be screwed into the engine compartment. This sensor is an aftermarket part manufactured in China. It is designed for use as an oxygen sensor and is wired for easy installation. It is not a vintage or performance part and does not have universal fitment. The sensor is sold as is and does not come with any guarantees or warranties.