Mercedes-Benz Electrical Receptacle Housing | 2010-2023 0009820212 WAP799 They allow air-cooled engines to

They allow air-cooled engines to reap all the benefits of technological advances in oils

it's also optional (check amazon for 12v to usb-c power supply)

The channel diameter is 38 mm to the throttle body and 46 mm to the intake funnel

** Photo shows the option that includes the setting tool

Mercedes-Benz Electrical Receptacle Housing | 2010-2023 0009820212 WAP799 They allow air-cooled engines toElectrical Receptacle Housing for E63 AMG (2010 2015), SLK250 (2012 2015), SLK55 AMG (2012 2016), CLS550 (2012 2018), CLS63 AMG (2012 2014), E350 (2010 2016), E550 (2010 2014), GLK350 (2010 2015), SLK350 (2012 2016), GLK250 (2013 2015), CLA250 (2014 2019), CLA45 AMG (2014 2019), GLA250 (2015 2020), GLA45 AMG (2015 2019), E250 (2014 2016), E400 (2013 2016), E63 AMG S (2014 2016), CLS63 AMG S (2014 2018), CLS400 (2015 2017), C400 (2015), C300 (2015