The apparatus in question is a ram pump, a technology dating back all the way to the 18th century. The version that [Junkyard – Origin of Creativity] built uses commonly available materials like ...

Ram and Jeep used the CP4 pump on vehicles equipped with the 3.0-liter Cummins diesel from 2014 to 2023 with Ram also using it on the 6.7-liter Cummins in its pickup trucks from 2019 to 2020.