Vehicle Compatibility Information For Lexus GS350 3.5L 2007-2011&2013-2015 For Lexus GS450h 3.5L 2007-2011 For Lexus IS300 3.5L 2016-2018 For Lexus IS350 3.5L 2006-2018 For Lexus RC300 3.5L 2016-2018 For Lexus RC350 3.5L 2015-2018 What is a throttle body ? The throttle body is the part of the engine that mixes air with the fuel to allow combustion to take place. When a throttle body gets clogged with carbon, the vehicle may suffer from issues ranging from a lack of fuel mileage, loss in efficiency or may even become totally inoperable. When you need to replace the throttle body: .
