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Aftermarket downpipes often relocate the rear oxygen sensor farther away, leading to stress on both the harness and sensor that can result in failure. iWire's rear oxygen sensor extension lengthens the connection by seven inches, adding the necessary length to allow any downpipe sensor connection to reach with ease. Built with military grade materials to withstand the harsh enviornment underneath the car that includes heat, vibration, and debris.
Fits all 2002-2014 WRX and STI, plus 2004-2014 Forester XT and 2005-2014 Legacy GT/Outback XT.
