13601-28021 13602-28020 Balance Shaft Assembly For Solara Matrix TC 2AZ-FE 2AZ-FXE 2.4L 4CYL Engine Parts Balance shaft sub-assembly set includes part numbers 13601-28021 and 13602-28020.Designed for 2.4L 4-cylinder engines, compatible with select models equipped with 2AZ-FE and 2AZ-FXE engine types.Fits model year ranges as follows: 2007–2011 , 2009–2013 , 2009–2013 Matrix, 2006–2008 , 2007–2008 Solara, 2007–2010 tC, and 2008–2015 xB.Component is a direct replacement unit, intended to integrate into the engine's balance shaft system to reduce vibration and improve smoothness during.Part is supplied in condition and ready for installation.This is not an part.All brand mentions are used strictly for compatibility reference.