Home/Shop by Part/Engine & Engine Management/Engine Sensors & Electrical/Knock Sensor Narrow The Number Of Models Shown By Telling Us The Year Filter Models by Year 2021 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 Choose your Mazda Model # 2021 3 Knock Sensor 2021 6 Knock Sensor C 2021 CX-3 Knock Sensor 2021 CX-30 Knock Sensor 2021 CX-5 Knock Sensor 2021 CX-9 Knock Sensor M 2021 MX-5 Miata Knock Sensor